Update Add-ons class properties to annotations

This should take care of most of the class property conversions to
use the new annotation format (colon instead of equals) for
assignment. There may still be a few edge cases that were missed.

185 files changed, 2746 insertions, 2746 deletions

diff --git a/add_advanced_objects_menu/__init__.py b/add_advanced_objects_menu/__init__.py
index 32bbbd7f..91ddcb18 100644
--- a/add_advanced_objects_menu/__init__.py
+++ b/add_advanced_objects_menu/__init__.py
@@ -202,12 +202,12 @@ def menu(self, context):
 class AdvancedObjPreferences(AddonPreferences):
     bl_idname = __name__
 
-    show_menu_list = BoolProperty(
+    show_menu_list: BoolProperty(
         name="Menu List",
         description="Show/Hide the Add Menu items",
         default=False
     )
-    show_panel_list = BoolProperty(
+    show_panel_list: BoolProperty(
         name="Panels List",
         description="Show/Hide the Panel items",
         default=False
@@ -313,149 +313,149 @@ def adjust_selected_color_image(self, context):
 class AdvancedObjProperties(PropertyGroup):
     # cubester
     # main properties
-    cubester_check_audio = BoolProperty(
+    cubester_check_audio: BoolProperty(
         name="",
         default=False
     )
-    cubester_audio_image = EnumProperty(
+    cubester_audio_image: EnumProperty(
         name="Input Type",
         items=(("image", "Image",
                 "Use an Image as input for generating Geometry", "IMAGE_COL", 0),
                ("audio", "Audio",
                 "Use a Sound Strip as input for generating Geometry", "FILE_SOUND", 1))
     )
-    cubester_audio_file_length = IntProperty(
+    cubester_audio_file_length: IntProperty(
         default=0
     )
     # audio
-    cubester_audio_path = StringProperty(
+    cubester_audio_path: StringProperty(
         default="",
         name="Audio File",
         subtype="FILE_PATH",
         update=find_audio_length
     )
-    cubester_audio_min_freq = IntProperty(
+    cubester_audio_min_freq: IntProperty(
         name="Minimum Frequency",
         min=20, max=100000,
         default=20
     )
-    cubester_audio_max_freq = IntProperty(
+    cubester_audio_max_freq: IntProperty(
         name="Maximum Frequency",
         min=21, max=999999,
         default=5000
     )
-    cubester_audio_offset_type = EnumProperty(
+    cubester_audio_offset_type: EnumProperty(
         name="Offset Type",
         items=(("freq", "Frequency Offset", ""),
                ("frame", "Frame Offset", "")),
         description="Type of offset per row of mesh"
     )
-    cubester_audio_frame_offset = IntProperty(
+    cubester_audio_frame_offset: IntProperty(
         name="Frame Offset",
         min=0, max=10,
         default=2
     )
-    cubester_audio_block_layout = EnumProperty(
+    cubester_audio_block_layout: EnumProperty(
         name="Block Layout",
         items=(("rectangle", "Rectangular", ""),
               ("radial", "Radial", ""))
     )
-    cubester_audio_width_blocks = IntProperty(
+    cubester_audio_width_blocks: IntProperty(
         name="Width Block Count",
         min=1, max=10000,
         default=5
     )
-    cubester_audio_length_blocks = IntProperty(
+    cubester_audio_length_blocks: IntProperty(
         name="Length Block Count",
         min=1, max=10000,
         default=50
     )
     # image
-    cubester_load_type = EnumProperty(
+    cubester_load_type: EnumProperty(
         name="Image Input Type",
         items=(("single", "Single Image", ""),
               ("multiple", "Image Sequence", ""))
     )
-    cubester_image = StringProperty(
+    cubester_image: StringProperty(
         default="",
         name=""
     )
-    cubester_load_image = StringProperty(
+    cubester_load_image: StringProperty(
         default="",
         name="Load Image",
         subtype="FILE_PATH",
         update=adjust_selected_image
     )
-    cubester_skip_images = IntProperty(
+    cubester_skip_images: IntProperty(
         name="Image Step",
         min=1, max=30,
         default=1,
         description="Step from image to image by this number"
     )
-    cubester_max_images = IntProperty(
+    cubester_max_images: IntProperty(
         name="Max Number Of Images",
         min=2, max=1000,
         default=10,
         description="Maximum number of images to be used"
     )
-    cubester_frame_step = IntProperty(
+    cubester_frame_step: IntProperty(
         name="Frame Step Size",
         min=1, max=10,
         default=4,
         description="The number of frames each picture is used"
     )
-    cubester_skip_pixels = IntProperty(
+    cubester_skip_pixels: IntProperty(
         name="Skip # Pixels",
         min=0, max=256,
         default=64,
         description="Skip this number of pixels before placing the next"
     )
-    cubester_mesh_style = EnumProperty(
+    cubester_mesh_style: EnumProperty(
         name="Mesh Type",
         items=(("blocks", "Blocks", ""),
                ("plane", "Plane", "")),
         description="Compose mesh of multiple blocks or of a single plane"
     )
-    cubester_block_style = EnumProperty(
+    cubester_block_style: EnumProperty(
         name="Block Style",
         items=(("size", "Vary Size", ""),
                ("position", "Vary Position", "")),
         description="Vary Z-size of block, or vary Z-position"
     )
-    cubester_height_scale = FloatProperty(
+    cubester_height_scale: FloatProperty(
         name="Height Scale",
         subtype="DISTANCE",
         min=0.1, max=2,
         default=0.2
     )
-    cubester_invert = BoolProperty(
+    cubester_invert: BoolProperty(
         name="Invert Height",
         default=False
     )
     # general adjustments
-    cubester_size_per_hundred_pixels = FloatProperty(
+    cubester_size_per_hundred_pixels: FloatProperty(
         name="Size Per 100 Blocks/Points",
         subtype="DISTANCE",
         min=0.001, max=5,
         default=1
     )
     # material based stuff
-    cubester_materials = EnumProperty(
+    cubester_materials: EnumProperty(
         name="Material",
         items=(("vertex", "Vertex Colors", ""),
                ("image", "Image", "")),
         description="Color with vertex colors, or uv unwrap and use an image"
     )
-    cubester_use_image_color = BoolProperty(
+    cubester_use_image_color: BoolProperty(
         name="Use Original Image Colors'?",
         default=True,
         description="Use original image colors, or replace with an another one"
     )
-    cubester_color_image = StringProperty(
+    cubester_color_image: StringProperty(
         default="",
         name=""
     )
-    cubester_load_color_image = StringProperty(
+    cubester_load_color_image: StringProperty(
         default="",
         name="Load Color Image",
         subtype="FILE_PATH",
@@ -463,33 +463,33 @@ class AdvancedObjProperties(PropertyGroup):
     )
     cubester_vertex_colors = {}
     # advanced
-    cubester_advanced = BoolProperty(
+    cubester_advanced: BoolProperty(
         name="Advanced Options",
         default=False
     )
-    cubester_random_weights = BoolProperty(
+    cubester_random_weights: BoolProperty(
         name="Random Weights",
         default=False
     )
-    cubester_weight_r = FloatProperty(
+    cubester_weight_r: FloatProperty(
         name="Red",
         subtype="FACTOR",
         min=0.01, max=1.0,
         default=0.25
     )
-    cubester_weight_g = FloatProperty(
+    cubester_weight_g: FloatProperty(
         name="Green",
         subtype="FACTOR",
         min=0.01, max=1.0,
         default=0.25
     )
-    cubester_weight_b = FloatProperty(
+    cubester_weight_b: FloatProperty(
         name="Blue",
         subtype="FACTOR",
         min=0.01, max=1.0,
         default=0.25
     )
-    cubester_weight_a = FloatProperty(
+    cubester_weight_a: FloatProperty(
         name="Alpha",
         subtype="FACTOR",
         min=0.01, max=1.0,
@@ -497,15 +497,15 @@ class AdvancedObjProperties(PropertyGroup):
     )
 
     # arrange_on_curve
-    arrange_c_use_selected = BoolProperty(
+    arrange_c_use_selected: BoolProperty(
         name="Use Selected",
         description="Use the selected objects to duplicate",
         default=True,
     )
-    arrange_c_obj_arranjar = StringProperty(
+    arrange_c_obj_arranjar: StringProperty(
         name=""
     )
-    arrange_c_select_type = EnumProperty(
+    arrange_c_select_type: EnumProperty(
         name="Type",
         description="Select object or group",
         items=[
diff --git a/add_advanced_objects_menu/add_light_template.py b/add_advanced_objects_menu/add_light_template.py
index 5b4fbc86..2ca87c3b 100644
--- a/add_advanced_objects_menu/add_light_template.py
+++ b/add_advanced_objects_menu/add_light_template.py
@@ -73,22 +73,22 @@ class OBJECT_OT_add_light_template(Operator):
     camera = None
     target = None
 
-    bKeyLight = BoolProperty(
+    bKeyLight: BoolProperty(
             name="Key Light",
             description="Enable Key Light in the Scene",
             default=True
             )
-    bFillLight = BoolProperty(
+    bFillLight: BoolProperty(
             name="Fill Light",
             description="Enable Fill Light in the Scene",
             default=True
             )
-    bBackLight = BoolProperty(
+    bBackLight: BoolProperty(
             name="Back Light",
             description="Enable Back Light in the Scene",
             default=True
             )
-    camera_constraint = BoolProperty(
+    camera_constraint: BoolProperty(
             name="Camera Constraint",
             description="Add a Constraint to the Camera Object",
             default=False
diff --git a/add_advanced_objects_menu/add_mesh_aggregate.py b/add_advanced_objects_menu/add_mesh_aggregate.py
index 6072cb9c..b2ea399e 100644
--- a/add_advanced_objects_menu/add_mesh_aggregate.py
+++ b/add_advanced_objects_menu/add_mesh_aggregate.py
@@ -71,92 +71,92 @@ class OBJECT_OT_agregate_mesh(Operator):
                       "Needs at least two selected Mesh objects")
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    volX = FloatProperty(
+    volX: FloatProperty(
             name="Volume X",
             min=0.1, max=25,
             default=3,
             description="The cloud around cursor"
             )
-    volY = FloatProperty(
+    volY: FloatProperty(
             name="Volume Y",
             min=0.1, max=25,
             default=3,
             description="The cloud around cursor"
             )
-    volZ = FloatProperty(
+    volZ: FloatProperty(
             name="Volume Z",
             min=0.1, max=25,
             default=3,
             description="The cloud around cursor"
             )
-    baseSca = FloatProperty(
+    baseSca: FloatProperty(
             name="Scale",
             min=0.01, max=5,
             default=.25,
             description="Particle Scale"
             )
-    varSca = FloatProperty(
+    varSca: FloatProperty(
             name="Var",
             min=0, max=1,
             default=0,
             description="Particle Scale Variation"
             )
-    rotX = FloatProperty(
+    rotX: FloatProperty(
             name="Rot Var X",
             min=0, max=2,
             default=0,
             description="X Rotation Variation"
             )
-    rotY = FloatProperty(
+    rotY: FloatProperty(
             name="Rot Var Y",
             min=0, max=2,
             default=0,
             description="Y Rotation Variation"
             )
-    rotZ = FloatProperty(
+    rotZ: FloatProperty(
             name="Rot Var Z",
             min=0, max=2,
             default=1,
             description="Z Rotation Variation"
             )
-    rSeed = IntProperty(
+    rSeed: IntProperty(
             name="Random seed",
             min=0, max=999999,
             default=1,
             description="Seed to feed random values"
             )
-    numP = IntProperty(
+    numP: IntProperty(
             name="Number",
             min=1,
             max=9999, soft_max=500,
             default=50,
             description="Number of particles"
             )
-    nor = BoolProperty(
+    nor: BoolProperty(
             name="Normal Oriented",
             default=False,
             description="Align Z axis with Faces normals"
             )
-    cent = BoolProperty(
+    cent: BoolProperty(
             name="Use Face Center",
             default=False,
             description="Center on Faces"
             )
-    track = BoolProperty(
+    track: BoolProperty(
             name="Cursor Follows",
             default=False,
             description="Cursor moves as structure grows / more compact results"
             )
-    anim = BoolProperty(
+    anim: BoolProperty(
             name="Animatable",
             default=False,
             description="Sort faces so you can regrow with Build Modifier, materials are lost"
             )
-    refresh = BoolProperty(
+    refresh: BoolProperty(
             name="Update",
             default=False
             )
-    auto_refresh = BoolProperty(
+    auto_refresh: BoolProperty(
             name="Auto",
             description="Auto update spline",
             default=False
diff --git a/add_advanced_objects_menu/arrange_on_curve.py b/add_advanced_objects_menu/arrange_on_curve.py
index bfed37a7..17c14b57 100644
--- a/add_advanced_objects_menu/arrange_on_curve.py
+++ b/add_advanced_objects_menu/arrange_on_curve.py
@@ -71,7 +71,7 @@ class DupliCurve(Operator):
     bl_description = "Arange chosen / selected objects along the Active Curve"
     bl_options = {'REGISTER', 'UNDO'}
 
-    use_distance = EnumProperty(
+    use_distance: EnumProperty(
             name="Arrangement",
             items=[
                 ("D", "Distance", "Objects are arranged depending on the distance", 0),
@@ -79,7 +79,7 @@ class DupliCurve(Operator):
                 ("R", "Range", "Objects are arranged uniformly between the corners", 2)
                 ]
             )
-    distance = FloatProperty(
+    distance: FloatProperty(
             name="Distance",
             description="Distance between Objects",
             default=1.0,
@@ -87,44 +87,44 @@ class DupliCurve(Operator):
             soft_min=0.1,
             unit='LENGTH',
             )
-    object_qt = IntProperty(
+    object_qt: IntProperty(
             name="Quantity",
             description="Object amount",
             default=2,
             min=0,
             )
-    scale = FloatProperty(
+    scale: FloatProperty(
             name="Scale",
             description="Object Scale",
             default=1.0,
             min=FLT_MIN,
             unit='LENGTH',
                 )
-    Yaw = FloatProperty(
+    Yaw: FloatProperty(
             name="X",
             description="Rotate around the X axis (Yaw)",
             default=0.0,
             unit='ROTATION'
             )
-    Pitch = FloatProperty(
+    Pitch: FloatProperty(
             default=0.0,
             description="Rotate around the Y axis (Pitch)",
             name="Y",
             unit='ROTATION'
             )
-    Roll = FloatProperty(
+    Roll: FloatProperty(
             default=0.0,
             description="Rotate around the Z axis (Roll)",
             name="Z",
             unit='ROTATION'
             )
-    max_angle = FloatProperty(
+    max_angle: FloatProperty(
             default=1.57079,
             max=3.141592,
             name="Angle",
             unit='ROTATION'
             )
-    offset = FloatProperty(
+    offset: FloatProperty(
             default=0.0,
             name="Offset",
             unit='LENGTH'
diff --git a/add_advanced_objects_menu/copy2.py b/add_advanced_objects_menu/copy2.py
index 9a94ac1d..9806ad0d 100644
--- a/add_advanced_objects_menu/copy2.py
+++ b/add_advanced_objects_menu/copy2.py
@@ -67,7 +67,7 @@ class Copy2(Operator):
                         ('Y', "Y", "Secondary axis Y")]
         return sec_list
 
-    copytype = EnumProperty(
+    copytype: EnumProperty(
             items=(('V', "Vertex",
                     "Paste the Copied Geometry to Vertices of the Active Object", 'VERTEXSEL', 0),
                    ('E', "Edge",
@@ -75,27 +75,27 @@ class Copy2(Operator):
                    ('F', "Face",
                     "Paste the Copied Geometry to Faces of the Active Object", 'FACESEL', 2)),
             )
-    copyfromobject = EnumProperty(
+    copyfromobject: EnumProperty(
             name="Copy from",
             description="Copy an Object from the list",
             items=obj_list_cb
             )
-    priaxes = EnumProperty(
+    priaxes: EnumProperty(
             description="Primary axes used for Copied Object orientation",
             items=(('X', "X", "Along X"),
                    ('Y', "Y", "Along Y"),
                    ('Z', "Z", "Along Z")),
             )
-    edgescale = BoolProperty(
+    edgescale: BoolProperty(
             name="Scale to fill edge",
             default=False
             )
-    secaxes = EnumProperty(
+    secaxes: EnumProperty(
             name="Secondary Axis",
             description="Secondary axis used for Copied Object orientation",
             items=sec_axes_list_cb
             )
-    scale = FloatProperty(
+    scale: FloatProperty(
             name="Scale",
             default=1.0,
             min=0.0,
diff --git a/add_advanced_objects_menu/make_struts.py b/add_advanced_objects_menu/make_struts.py
index 76496237..91e794a2 100644
--- a/add_advanced_objects_menu/make_struts.py
+++ b/add_advanced_objects_menu/make_struts.py
@@ -506,36 +506,36 @@ class Struts(Operator):
                       "Needs an existing Active Mesh Object")
     bl_options = {'REGISTER', 'UNDO'}
 
-    ind = FloatProperty(
+    ind: FloatProperty(
             name="Inside Diameter",
             description="Diameter of inner surface",
             min=0.0, soft_min=0.0,
             max=100, soft_max=100,
             default=0.04
             )
-    od = FloatProperty(
+    od: FloatProperty(
             name="Outside Diameter",
             description="Diameter of outer surface",
             min=0.001, soft_min=0.001,
             max=100, soft_max=100,
             default=0.05
             )
-    manifold = BoolProperty(
+    manifold: BoolProperty(
             name="Manifold",
             description="Connect struts to form a single solid",
             default=False
             )
-    solid = BoolProperty(
+    solid: BoolProperty(
             name="Solid",
             description="Create inner surface",
             default=False
             )
-    loops = BoolProperty(
+    loops: BoolProperty(
             name="Loops",
             description="Create sub-surf friendly loops",
             default=False
             )
-    segments = IntProperty(
+    segments: IntProperty(
             name="Segments",
             description="Number of segments around strut",
             min=3, soft_min=3,
diff --git a/add_advanced_objects_menu/mesh_easylattice.py b/add_advanced_objects_menu/mesh_easylattice.py
index d2e608e9..585a343f 100644
--- a/add_advanced_objects_menu/mesh_easylattice.py
+++ b/add_advanced_objects_menu/mesh_easylattice.py
@@ -268,22 +268,22 @@ class EasyLattice(Operator):
     bl_description = ("Create a Lattice modifier ready to edit\n"
                       "Needs an existing Active Mesh Object\n")
 
-    lat_u = IntProperty(
+    lat_u: IntProperty(
             name="Lattice u",
             description="Points in u direction",
             default=3
             )
-    lat_v = IntProperty(
+    lat_v: IntProperty(
             name="Lattice v",
             description="Points in v direction",
             default=3
             )
-    lat_w = IntProperty(
+    lat_w: IntProperty(
             name="Lattice w",
             description="Points in w direction",
             default=3
             )
-    lat_scale_factor = FloatProperty(
+    lat_scale_factor: FloatProperty(
             name="Lattice scale factor",
             description="Adjustment to the lattice scale",
             default=1,
@@ -296,7 +296,7 @@ class EasyLattice(Operator):
                  ('KEY_CATMULL_ROM', "Catmull-Rom", "Catmull-Rom Interpolation type"),
                  ('KEY_BSPLINE', "BSpline", "Key BSpline Interpolation Type")
                 )
-    lat_type = EnumProperty(
+    lat_type: EnumProperty(
             name="Lattice Type",
             description="Choose Lattice Type",
             items=lat_types,
diff --git a/add_advanced_objects_menu/oscurart_chain_maker.py b/add_advanced_objects_menu/oscurart_chain_maker.py
index 6dcd6f80..8624dea5 100644
--- a/add_advanced_objects_menu/oscurart_chain_maker.py
+++ b/add_advanced_objects_menu/oscurart_chain_maker.py
@@ -245,11 +245,11 @@ class MESH_OT_primitive_oscurart_chain_add(Operator):
                       "The Active/Last Selected Object must be an Armature")
     bl_options = {'REGISTER', 'UNDO'}
 
-    curverig = BoolProperty(
+    curverig: BoolProperty(
             name="Curve Rig",
             default=False
             )
-    multiplier = FloatProperty(
+    multiplier: FloatProperty(
             name="Scale",
             default=1,
             min=0.01, max=100.0
diff --git a/add_advanced_objects_menu/pixelate_3d.py b/add_advanced_objects_menu/pixelate_3d.py
index 567e882a..10032e62 100644
--- a/add_advanced_objects_menu/pixelate_3d.py
+++ b/add_advanced_objects_menu/pixelate_3d.py
@@ -73,21 +73,21 @@ class Pixelate(Operator):
                       "Needs an existing Active Mesh Object")
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = FloatProperty(
+    size: FloatProperty(
             name="Size",
             min=.05, max=5,
             default=.25,
             description="Size of the cube / grid \n"
                         "Small values (below 0.1) can create a high polygon count"
             )
-    gap = IntProperty(
+    gap: IntProperty(
             name="Gap",
             min=0, max=90,
             default=10,
             subtype='PERCENTAGE',
             description="Separation - percent of size"
             )
-    smooth = FloatProperty(
+    smooth: FloatProperty(
             name="Smooth",
             min=0, max=1,
             default=.0,
diff --git a/add_advanced_objects_menu/random_box_structure.py b/add_advanced_objects_menu/random_box_structure.py
index ead19bd1..7d6edbdd 100644
--- a/add_advanced_objects_menu/random_box_structure.py
+++ b/add_advanced_objects_menu/random_box_structure.py
@@ -30,40 +30,40 @@ class makestructure(Operator):
                       "Needs an existing Active Mesh Object")
     bl_options = {'REGISTER', 'UNDO'}
 
-    dc = BoolProperty(
+    dc: BoolProperty(
             name="Delete Base Mesh(es)",
             default=True
             )
-    wh = BoolProperty(
+    wh: BoolProperty(
             name="Stay Within Bounds",
             description="Keeps cubes from exceeding base mesh bounds",
             default=True
             )
-    uf = BoolProperty(
+    uf: BoolProperty(
             name="Uniform Cube Quantity",
             default=False
             )
-    qn = IntProperty(
+    qn: IntProperty(
             name="Cube Quantity",
             default=10,
             min=1, max=1500
             )
-    mn = FloatVectorProperty(
+    mn: FloatVectorProperty(
             name="Min Scales",
             default=(0.1, 0.1, 0.1),
             subtype='XYZ'
             )
-    mx = FloatVectorProperty(
+    mx: FloatVectorProperty(
             name="Max Scales",
             default=(2.0, 2.0, 2.0),
             subtype='XYZ'
             )
-    lo = FloatVectorProperty(
+    lo: FloatVectorProperty(
             name="XYZ Offset",
             default=(0.0, 0.0, 0.0),
             subtype='XYZ'
             )
-    rsd = FloatProperty(
+    rsd: FloatProperty(
             name="Random Seed",
             default=1
             )
diff --git a/add_advanced_objects_menu/rope_alpha.py b/add_advanced_objects_menu/rope_alpha.py
index f0bd5dd7..03692412 100644
--- a/add_advanced_objects_menu/rope_alpha.py
+++ b/add_advanced_objects_menu/rope_alpha.py
@@ -204,40 +204,40 @@ class ClothRope(Operator):
     bl_description = ("Create a new Scene with a Cloth modifier\n"
                       "Rope Simulation with hooked Helper Objects")
 
-    ropelength = IntProperty(
+    ropelength: IntProperty(
             name="Rope Length",
             description="Length of the generated Rope",
             default=5
             )
-    ropesegments = IntProperty(
+    ropesegments: IntProperty(
             name="Rope Segments",
             description="Number of the Rope Segments",
             default=5
             )
-    qcr = IntProperty(
+    qcr: IntProperty(
             name="Collision Quality",
             description="Rope's Cloth modifier collsion quality",
             min=1, max=20,
             default=20
             )
-    substeps = IntProperty(
+    substeps: IntProperty(
             name="Rope Substeps",
             description="Rope's Cloth modifier quality",
             min=4, max=80,
             default=50
             )
-    resrope = IntProperty(
+    resrope: IntProperty(
             name="Rope Resolution",
             description="Rope's Bevel resolution",
             default=5
             )
-    radiusrope = FloatProperty(
+    radiusrope: FloatProperty(
             name="Radius",
             description="Rope's Radius",
             min=0.04, max=1,
             default=0.04
             )
-    hide_emptys = BoolProperty(
+    hide_emptys: BoolProperty(
             name="Hide Empties",
             description="Hide Helper Objects",
             default=False
@@ -502,60 +502,60 @@ class BallRope(Operator):
                       "Wrecking Ball on a rope")
 
     # defaults rope ball
-    ropelength2 = IntProperty(
+    ropelength2: IntProperty(
             name="Rope Length",
             description="Length of the Wrecking Ball rope",
             default=10
             )
-    ropesegments2 = IntProperty(
+    ropesegments2: IntProperty(
             name="Rope Segments",
             description="Number of the Wrecking Ball rope segments",
             min=0, max=999,
             default=6
             )
-    radiuscubes = FloatProperty(
+    radiuscubes: FloatProperty(
             name="Cube Radius",
             description="Size of the Linked Cubes helpers",
             default=0.5
             )
-    radiusrope = FloatProperty(
+    radiusrope: FloatProperty(
             name="Rope Radius",
             description="Radius of the Rope",
             default=0.4
             )
-    worldsteps = IntProperty(
+    worldsteps: IntProperty(
             name="World Steps",
             description="Rigid Body Solver world steps per second (update)",
             min=60, max=1000,
             default=250
             )
-    solveriterations = IntProperty(
+    solveriterations: IntProperty(
             name="Solver Iterations",
             description="How many times the Rigid Body Solver should run",
             min=10, max=100,
             default=50
             )
-    massball = IntProperty(
+    massball: IntProperty(
             name="Ball Mass",
             description="Mass of the Wrecking Ball",
             default=1
             )
-    resrope = IntProperty(
+    resrope: IntProperty(
             name="Resolution",
             description="Rope resolution",
             default=4
             )
-    grados = FloatProperty(
+    grados: FloatProperty(
             name="Degrees",
             description="Angle of the Wrecking Ball compared to the Ground Plane",
             default=45
             )
-    separacion = FloatProperty(
+    separacion: FloatProperty(
             name="Link Cubes Gap",
             description="Space between the Rope's Linked Cubes",
             default=0.1
             )
-    hidecubes = BoolProperty(
+    hidecubes: BoolProperty(
             name="Hide Link Cubes",
             description="Hide helper geometry for the Rope",
             default=False
diff --git a/add_advanced_objects_menu/trilighting.py b/add_advanced_objects_menu/trilighting.py
index c163a894..e14ec0e1 100644
--- a/add_advanced_objects_menu/trilighting.py
+++ b/add_advanced_objects_menu/trilighting.py
@@ -21,40 +21,40 @@ class TriLighting(Operator):
                       "Needs an existing Active Object")
     bl_options = {'REGISTER', 'UNDO'}
 
-    height = FloatProperty(
+    height: FloatProperty(
             name="Height",
             default=5
             )
-    distance = FloatProperty(
+    distance: FloatProperty(
             name="Distance",
             default=5,
             min=0.1,
             subtype="DISTANCE"
             )
-    energy = IntProperty(
+    energy: IntProperty(
             name="Base Energy",
             default=3,
             min=1
             )
-    contrast = IntProperty(
+    contrast: IntProperty(
             name="Contrast",
             default=50,
             min=-100, max=100,
             subtype="PERCENTAGE"
             )
-    leftangle = IntProperty(
+    leftangle: IntProperty(
             name="Left Angle",
             default=26,
             min=1, max=90,
             subtype="ANGLE"
             )
-    rightangle = IntProperty(
+    rightangle: IntProperty(
             name="Right Angle",
             default=45,
             min=1, max=90,
             subtype="ANGLE"
             )
-    backangle = IntProperty(
+    backangle: IntProperty(
             name="Back Angle",
             default=235,
             min=90, max=270,
@@ -67,14 +67,14 @@ class TriLighting(Operator):
             ('HEMI', "Hemi", "Hemi Light"),
             ('AREA', "Area", "Area Light")
             ]
-    primarytype = EnumProperty(
+    primarytype: EnumProperty(
             attr='tl_type',
             name="Key Type",
             description="Choose the types of Key Lights you would like",
             items=Light_Type_List,
             default='HEMI'
             )
-    secondarytype = EnumProperty(
+    secondarytype: EnumProperty(
             attr='tl_type',
             name="Fill + Back Type",
             description="Choose the types of secondary Lights you would like",
diff --git a/add_advanced_objects_panels/__init__.py b/add_advanced_objects_panels/__init__.py
index 1c453226..8acf398e 100644
--- a/add_advanced_objects_panels/__init__.py
+++ b/add_advanced_objects_panels/__init__.py
@@ -145,13 +145,13 @@ def disable_all_modules(self, context):
 class AdvancedObjPreferences1(AddonPreferences):
     bl_idname = __name__
 
-    enable_all = BoolProperty(
+    enable_all: BoolProperty(
             name="Enable all",
             description="Enable all Advanced Objects' Panels",
             default=False,
             update=enable_all_modules
             )
-    disable_all = BoolProperty(
+    disable_all: BoolProperty(
             name="Disable all",
             description="Disable all Advanced Objects' Panels",
             default=False,
@@ -280,100 +280,100 @@ for mod in sub_modules:
 class AdvancedObjProperties1(PropertyGroup):
 
     # object_laplace_lighting props
-    ORIGIN = FloatVectorProperty(
+    ORIGIN: FloatVectorProperty(
             name="Origin charge"
             )
-    GROUNDZ = IntProperty(
+    GROUNDZ: IntProperty(
             name="Ground Z coordinate"
             )
-    HORDER = IntProperty(
+    HORDER: IntProperty(
             name="Secondary paths orders",
             default=1
             )
     # object_laplace_lighting UI props
-    TSTEPS = IntProperty(
+    TSTEPS: IntProperty(
             name="Iterations",
             default=350,
             description="Number of cells to create\n"
                         "Will end early if hits ground plane or cloud"
             )
-    GSCALE = FloatProperty(
+    GSCALE: FloatProperty(
             name="Grid unit size",
             default=0.12,
             description="scale of cells, .25 = 4 cells per blenderUnit"
             )
-    BIGVAR = FloatProperty(
+    BIGVAR: FloatProperty(
             name="Straightness",
             default=6.3,
             description="Straightness/branchiness of bolt, \n"
                         "<2 is mush, >12 is staight line, 6.3 is good"
             )
-    GROUNDBOOL = BoolProperty(
+    GROUNDBOOL: BoolProperty(
             name="Use Ground object",
             description="Use ground plane or not",
             default=True
             )
-    GROUNDC = IntProperty(
+    GROUNDC: IntProperty(
             name="Ground charge",
             default=-250,
             description="Charge of the ground plane"
             )
-    CLOUDBOOL = BoolProperty(
+    CLOUDBOOL: BoolProperty(
             name="Use Cloud object",
             default=False,
             description="Use cloud object - attracts and terminates like ground but\n"
                         "any obj instead of z plane\n"
                         "Can slow down loop if obj is large, overrides ground"
             )
-    CLOUDC = IntProperty(
+    CLOUDC: IntProperty(
             name="Cloud charge",
             default=-1,
             description="Charge of a cell in cloud object\n"
                         "(so total charge also depends on obj size)"
             )
-    VMMESH = BoolProperty(
+    VMMESH: BoolProperty(
             name="Multi mesh",
             default=True,
             description="Output to multi-meshes for different materials on main/sec/side branches"
             )
-    VSMESH = BoolProperty(
+    VSMESH: BoolProperty(
             name="Single mesh",
             default=False,
             description="Output to single mesh for using build modifier and particles for effects"
             )
-    VCUBE = BoolProperty(
+    VCUBE: BoolProperty(
             name="Cubes",
             default=False,
             description="CTRL-J after run to JOIN\n"
                         "Outputs a bunch of cube objects, mostly for testing"
             )
-    VVOX = BoolProperty(
+    VVOX: BoolProperty(
             name="Voxel (experimental)",
             default=False,
             description="Output to a voxel file to bpy.data.filepath\FSLGvoxels.raw\n"
                         "(doesn't work well right now)"
             )
-    IBOOL = BoolProperty(
+    IBOOL: BoolProperty(
             name="Use Insulator object",
             default=False,
             description="Use insulator mesh object to prevent growth of bolt in areas"
             )
-    OOB = StringProperty(
+    OOB: StringProperty(
             name="Select",
             default="",
             description="Origin of bolt, can be an Empty\n"
                         "if object is a mesh will use all verts as charges")
-    GOB = StringProperty(
+    GOB: StringProperty(
             name="Select",
             default="",
             description="Object to use as ground plane, uses z coord only"
             )
-    COB = StringProperty(
+    COB: StringProperty(
             name="Select",
             default="",
             description="Object to use as cloud, best to use a cube"
             )
-    IOB = StringProperty(
+    IOB: StringProperty(
             name="Select",
             default="",
             description="Object to use as insulator, 'voxelized'\n"
@@ -386,88 +386,88 @@ class AdvancedObjProperties1(PropertyGroup):
             subtype='XYZ',
             description="Constrains Mangle Direction"
             )
-    mangle_random_magnitude = IntProperty(
+    mangle_random_magnitude: IntProperty(
             name="Mangle Severity",
             default=5,
             min=1, max=30,
             description="Severity of mangling"
             )
-    mangle_name = StringProperty(
+    mangle_name: StringProperty(
             name="Shape Key Name",
             default="mangle",
             description="Name given for mangled shape keys"
             )
     # unfold_transition properties
-    unfold_arm_name = StringProperty(
+    unfold_arm_name: StringProperty(
             default=""
             )
-    unfold_modo = EnumProperty(
+    unfold_modo: EnumProperty(
             name="",
             items=[("cursor", "3D Cursor", "Use the Distance to 3D Cursor"),
                    ("weight", "Weight Map", "Use a Painted Weight map"),
                    ("index", "Mesh Indices", "Use Faces and Vertices index")],
             description="How to Sort Bones for animation", default="cursor"
             )
-    unfold_flip = BoolProperty(
+    unfold_flip: BoolProperty(
             name="Flipping Faces",
             default=False,
             description="Rotate faces around the Center and skip Scaling - "
                         "keep checked for both operators"
             )
-    unfold_fold_duration = IntProperty(
+    unfold_fold_duration: IntProperty(
             name="Total Time",
             min=5, soft_min=25,
             max=10000, soft_max=2500,
             default=200,
             description="Total animation length"
             )
-    unfold_sca_time = IntProperty(
+    unfold_sca_time: IntProperty(
             name="Scale Time",
             min=1,
             max=5000, soft_max=500,
             default=10,
             description="Faces scaling time"
             )
-    unfold_rot_time = IntProperty(
+    unfold_rot_time: IntProperty(
             name="Rotation Time",
             min=1, soft_min=5,
             max=5000, soft_max=500,
             default=15,
             description="Faces rotation time"
             )
-    unfold_rot_max = IntProperty(
+    unfold_rot_max: IntProperty(
             name="Angle",
             min=-180,
             max=180,
             default=135,
             description="Faces rotation angle"
             )
-    unfold_fold_noise = IntProperty(
+    unfold_fold_noise: IntProperty(
             name="Noise",
             min=0,
             max=500, soft_max=50,
             default=0,
             description="Offset some faces animation"
             )
-    unfold_bounce = FloatProperty(
+    unfold_bounce: FloatProperty(
             name="Bounce",
             min=0,
             max=10, soft_max=2.5,
             default=0,
             description="Add some bounce to rotation"
             )
-    unfold_from_point = BoolProperty(
+    unfold_from_point: BoolProperty(
             name="Point",
             default=False,
             description="Scale faces from a Point instead of from an Edge"
             )
-    unfold_wiggle_rot = BoolProperty(
+    unfold_wiggle_rot: BoolProperty(
             name="Wiggle",
             default=False,
             description="Use all Axis + Random Rotation instead of X Aligned"
             )
     # oscurart_constellation
-    constellation_limit = FloatProperty(
+    constellation_limit: FloatProperty(
             name="Initial Threshold",
             description="Edges will be created only if the distance\n"
                         "between vertices is smaller than this value\n"
diff --git a/add_advanced_objects_panels/delaunay_voronoi.py b/add_advanced_objects_panels/delaunay_voronoi.py
index 44e746df..1219a2ab 100644
--- a/add_advanced_objects_panels/delaunay_voronoi.py
+++ b/add_advanced_objects_panels/delaunay_voronoi.py
@@ -228,7 +228,7 @@ class OBJECT_OT_VoronoiButton(Operator):
                       "Needs an existing Active Mesh Object")
     bl_options = {"REGISTER", "UNDO"}
 
-    meshType = EnumProperty(
+    meshType: EnumProperty(
             items=[('Edges', "Edges", "Edges Only - do not fill Faces"),
                    ('Faces', "Faces", "Fill Faces in the new Object")],
             name="Mesh type",
diff --git a/add_advanced_objects_panels/drop_to_ground.py b/add_advanced_objects_panels/drop_to_ground.py
index 8c66fb46..0735f242 100644
--- a/add_advanced_objects_panels/drop_to_ground.py
+++ b/add_advanced_objects_panels/drop_to_ground.py
@@ -224,11 +224,11 @@ def drop_objects(self, context):
 
 # define base dummy class for inheritance
 class DropBaseAtributes:
-    align = BoolProperty(
+    align: BoolProperty(
             name="Align to ground",
             description="Aligns the objects' rotation to the ground",
             default=True)
-    use_origin = BoolProperty(
+    use_origin: BoolProperty(
             name="Use Origins",
             description="Drop to objects' origins\n"
                         "Use this option for dropping all types of Objects",
@@ -300,7 +300,7 @@ class Drop_help(Operator):
     bl_description = "Clik for some information about Drop to Ground"
     bl_options = {"REGISTER", "INTERNAL"}
 
-    is_all = BoolProperty(
+    is_all: BoolProperty(
             default=True,
             options={"HIDDEN"}
             )
diff --git a/add_advanced_objects_panels/oscurart_constellation.py b/add_advanced_objects_panels/oscurart_constellation.py
index 4e477a35..dfa33269 100644
--- a/add_advanced_objects_panels/oscurart_constellation.py
+++ b/add_advanced_objects_panels/oscurart_constellation.py
@@ -73,7 +73,7 @@ class Oscurart_Constellation(Operator):
                       "Needs an existing Active Mesh Object")
     bl_options = {'REGISTER', 'UNDO'}
 
-    limit = FloatProperty(
+    limit: FloatProperty(
             name="Threshold",
             description="Edges will be created only if the distance\n"
                         "between vertices is smaller than this value",
diff --git a/add_curve_extra_objects/add_curve_spirals.py b/add_curve_extra_objects/add_curve_spirals.py
index c8c11789..7bb225d0 100644
--- a/add_curve_extra_objects/add_curve_spirals.py
+++ b/add_curve_extra_objects/add_curve_spirals.py
@@ -291,7 +291,7 @@ class CURVE_OT_spirals(Operator):
             min=1, max=400,
             description="Number of curves of spiral"
             )
-    touch = BoolProperty(
+    touch: BoolProperty(
             default=False,
             description="No empty spaces between cycles"
             )
diff --git a/add_mesh_BoltFactory/Boltfactory.py b/add_mesh_BoltFactory/Boltfactory.py
index 0b405f3c..c021f111 100644
--- a/add_mesh_BoltFactory/Boltfactory.py
+++ b/add_mesh_BoltFactory/Boltfactory.py
@@ -46,7 +46,7 @@ class add_mesh_bolt(Operator, AddObjectHelper):
     # Model Types
     Model_Type_List = [('bf_Model_Bolt', 'BOLT', 'Bolt Model'),
                        ('bf_Model_Nut', 'NUT', 'Nut Model')]
-    bf_Model_Type = EnumProperty(
+    bf_Model_Type: EnumProperty(
             attr='bf_Model_Type',
             name='Model',
             description='Choose the type off model you would like',
@@ -58,7 +58,7 @@ class add_mesh_bolt(Operator, AddObjectHelper):
                         ('bf_Head_Dome', 'DOME', 'Dome Head'),
                         ('bf_Head_Pan', 'PAN', 'Pan Head'),
                         ('bf_Head_CounterSink', 'COUNTER SINK', 'Counter Sink Head')]
-    bf_Head_Type = EnumProperty(
+    bf_Head_Type: EnumProperty(
             attr='bf_Head_Type',
             name='Head',
             description='Choose the type off Head you would like',
@@ -68,7 +68,7 @@ class add_mesh_bolt(Operator, AddObjectHelper):
     Bit_Type_List = [('bf_Bit_None', 'NONE', 'No Bit Type'),
                     ('bf_Bit_Allen', 'ALLEN', 'Allen Bit Type'),
                     ('bf_Bit_Philips', 'PHILLIPS', 'Phillips Bit Type')]
-    bf_Bit_Type = EnumProperty(
+    bf_Bit_Type: EnumProperty(
             attr='bf_Bit_Type',
             name='Bit Type',
             description='Choose the type of bit to you would like',
@@ -77,159 +77,159 @@ class add_mesh_bolt(Operator, AddObjectHelper):
     # Nut Types
     Nut_Type_List = [('bf_Nut_Hex', 'HEX', 'Hex Nut'),
                     ('bf_Nut_Lock', 'LOCK', 'Lock Nut')]
-    bf_Nut_Type = EnumProperty(
+    bf_Nut_Type: EnumProperty(
             attr='bf_Nut_Type',
             name='Nut Type',
             description='Choose the type of nut you would like',
             items=Nut_Type_List, default='bf_Nut_Hex'
             )
     # Shank Types
-    bf_Shank_Length = FloatProperty(
+    bf_Shank_Length: FloatProperty(
             attr='bf_Shank_Length',
             name='Shank Length', default=0,
             min=0, soft_min=0, max=MAX_INPUT_NUMBER,
             description='Length of the unthreaded shank'
             )
-    bf_Shank_Dia = FloatProperty(
+    bf_Shank_Dia: FloatProperty(
             attr='bf_Shank_Dia',
             name='Shank Dia', default=3,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Diameter of the shank'
             )
-    bf_Phillips_Bit_Depth = FloatProperty(
+    bf_Phillips_Bit_Depth: FloatProperty(
             attr='bf_Phillips_Bit_Depth',
             name='Bit Depth', default=1.1431535482406616,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Depth of the Phillips Bit'
             )
-    bf_Allen_Bit_Depth = FloatProperty(
+    bf_Allen_Bit_Depth: FloatProperty(
             attr='bf_Allen_Bit_Depth',
             name='Bit Depth', default=1.5,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Depth of the Allen Bit'
             )
-    bf_Allen_Bit_Flat_Distance = FloatProperty(
+    bf_Allen_Bit_Flat_Distance: FloatProperty(
             attr='bf_Allen_Bit_Flat_Distance',
             name='Flat Dist', default=2.5,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Flat Distance of the Allen Bit'
             )
-    bf_Hex_Head_Height = FloatProperty(
+    bf_Hex_Head_Height: FloatProperty(
             attr='bf_Hex_Head_Height',
             name='Head Height', default=2,
             min=0, soft_min=0, max=MAX_INPUT_NUMBER,
             description='Height of the Hex Head'
             )
-    bf_Hex_Head_Flat_Distance = FloatProperty(
+    bf_Hex_Head_Flat_Distance: FloatProperty(
             attr='bf_Hex_Head_Flat_Distance',
             name='Flat Dist', default=5.5,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Flat Distance of the Hex Head'
             )
-    bf_CounterSink_Head_Dia = FloatProperty(
+    bf_CounterSink_Head_Dia: FloatProperty(
             attr='bf_CounterSink_Head_Dia',
             name='Head Dia', default=6.300000190734863,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Diameter of the Counter Sink Head'
             )
-    bf_Cap_Head_Height = FloatProperty(
+    bf_Cap_Head_Height: FloatProperty(
             attr='bf_Cap_Head_Height',
             name='Head Height', default=3,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Height of the Cap Head'
             )
-    bf_Cap_Head_Dia = FloatProperty(
+    bf_Cap_Head_Dia: FloatProperty(
             attr='bf_Cap_Head_Dia',
             name='Head Dia', default=5.5,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Diameter of the Cap Head'
             )
-    bf_Dome_Head_Dia = FloatProperty(
+    bf_Dome_Head_Dia: FloatProperty(
             attr='bf_Dome_Head_Dia',
             name='Dome Head Dia', default=5.599999904632568,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Length of the unthreaded shank'
             )
-    bf_Pan_Head_Dia = FloatProperty(
+    bf_Pan_Head_Dia: FloatProperty(
             attr='bf_Pan_Head_Dia',
             name='Pan Head Dia', default=5.599999904632568,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Diameter of the Pan Head')
 
-    bf_Philips_Bit_Dia = FloatProperty(
+    bf_Philips_Bit_Dia: FloatProperty(
             attr='bf_Philips_Bit_Dia',
             name='Bit Dia', default=1.8199999332427979,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Diameter of the Philips Bit')
 
-    bf_Thread_Length = FloatProperty(
+    bf_Thread_Length: FloatProperty(
             attr='bf_Thread_Length',
             name='Thread Length', default=6,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Length of the Thread')
 
-    bf_Major_Dia = FloatProperty(
+    bf_Major_Dia: FloatProperty(
             attr='bf_Major_Dia',
             name='Major Dia', default=3,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Outside diameter of the Thread')
 
-    bf_Pitch = FloatProperty(
+    bf_Pitch: FloatProperty(
             attr='bf_Pitch',
             name='Pitch', default=0.3499999940395355,
             min=0.1, soft_min=0.1,
             max=7.0,
             description='Pitch if the thread'
             )
-    bf_Minor_Dia = FloatProperty(
+    bf_Minor_Dia: FloatProperty(
             attr='bf_Minor_Dia',
             name='Minor Dia', default=2.6211137771606445,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Inside diameter of the Thread'
             )
-    bf_Crest_Percent = IntProperty(
+    bf_Crest_Percent: IntProperty(
             attr='bf_Crest_Percent',
             name='Crest Percent', default=10,
             min=1, soft_min=1,
             max=90,
             description='Percent of the pitch that makes up the Crest'
             )
-    bf_Root_Percent = IntProperty(
+    bf_Root_Percent: IntProperty(
             attr='bf_Root_Percent',
             name='Root Percent', default=10,
             min=1, soft_min=1,
             max=90,
             description='Percent of the pitch that makes up the Root'
             )
-    bf_Div_Count = IntProperty(
+    bf_Div_Count: IntProperty(
             attr='bf_Div_Count',
             name='Div count', default=36,
             min=4, soft_min=4,
             max=4096,
             description='Div count determine circle resolution'
             )
-    bf_Hex_Nut_Height = FloatProperty(
+    bf_Hex_Nut_Height: FloatProperty(
             attr='bf_Hex_Nut_Height',
             name='Hex Nut Height', default=2.4000000953674316,
             min=0, soft_min=0,
             max=MAX_INPUT_NUMBER,
             description='Height of the Hex Nut'
             )
-    bf_Hex_Nut_Flat_Distance = FloatProperty(
+    bf_Hex_Nut_Flat_Distance: FloatProperty(
             attr='bf_Hex_Nut_Flat_Distance',
             name='Hex Nut Flat Dist', default=5.5,
             min=0, soft_min=0,
@@ -238,18 +238,18 @@ class add_mesh_bolt(Operator, AddObjectHelper):
             )
 
         # generic transform props
-    view_align = BoolProperty(
+    view_align: BoolProperty(
             name="Align to View",
             default=False,
             update=AddObjectHelper.view_align_update_callback,
             )
 
-    location = FloatVectorProperty(
+    location: FloatVectorProperty(
             name="Location",
             subtype='TRANSLATION',
             )
 
-    rotation = FloatVectorProperty(
+    rotation: FloatVectorProperty(
             name="Rotation",
             subtype='EULER',
             )
diff --git a/add_mesh_extra_objects/Wallfactory.py b/add_mesh_extra_objects/Wallfactory.py
index 16215fbf..b6d7460f 100644
--- a/add_mesh_extra_objects/Wallfactory.py
+++ b/add_mesh_extra_objects/Wallfactory.py
@@ -66,7 +66,7 @@ class add_mesh_wallb(Operator):
 
     # only create object when True
     # False allows modifying several parameters without creating object
-    ConstructTog = BoolProperty(
+    ConstructTog: BoolProperty(
             name="Construct",
             description="Generate the object",
             default=True
@@ -74,13 +74,13 @@ class add_mesh_wallb(Operator):
     # need to modify so radial makes a tower (normal);
     # want "flat" setting to make disk (alternate)
     # make the wall circular - if not sloped it's a flat disc
-    RadialTog = BoolProperty(
+    RadialTog: BoolProperty(
             name="Radial",
             description="Make masonry radial",
             default=False
             )
     # curve the wall - if radial creates dome.
-    SlopeTog = BoolProperty(
+    SlopeTog: BoolProperty(
             name="Curved",
             description="Make masonry sloped, or curved",
             default=False
@@ -88,214 +88,214 @@ class add_mesh_wallb(Operator):
     # need to review defaults and limits for all of these UI objects
 
     # wall area/size
-    WallStart = FloatProperty(
+    WallStart: FloatProperty(
             name="Start",
             description="Left side, or start angle",
             default=-10.0,
             min=-100, max=100.0
             )
-    WallEnd = FloatProperty(
+    WallEnd: FloatProperty(
             name="End",
             description="Right side, or end angle",
             default=10.0,
             min=0.0, max=100.0
             )
-    WallBottom = FloatProperty(
+    WallBottom: FloatProperty(
             name="Bottom",
             description="Lower height or radius",
             default=0.0,
             min=-100, max=100
             )
-    WallTop = FloatProperty(
+    WallTop: FloatProperty(
             name="Top",
             description="Upper height or radius",
             default=15.0,
             min=0.0, max=100.0
             )
-    EdgeOffset = FloatProperty(
+    EdgeOffset: FloatProperty(
             name="Edging",
             description="Block staggering on wall sides",
             default=0.6, min=0.0, max=100.0
             )
     # block sizing
-    Width = FloatProperty(
+    Width: FloatProperty(
             name="Width",
             description="Average width of each block",
             default=1.5,
             min=0.01, max=100.0
             )
-    WidthVariance = FloatProperty(
+    WidthVariance: FloatProperty(
             name="Variance",
             description="Random variance of block width",
             default=0.5,
             min=0.0, max=100.0
             )
-    WidthMinimum = FloatProperty(
+    WidthMinimum: FloatProperty(
             name="Minimum",
             description="Absolute minimum block width",
             default=0.5,
             min=0.01, max=100.0
             )
-    Height = FloatProperty(
+    Height: FloatProperty(
             name="Height",
             description="Average Height of each block",
             default=0.7,
             min=0.01, max=100.0
             )
-    HeightVariance = FloatProperty(
+    HeightVariance: FloatProperty(
             name="Variance",
             description="Random variance of block Height",
             default=0.3,
             min=0.0, max=100.0
             )
-    HeightMinimum = FloatProperty(
+    HeightMinimum: FloatProperty(
             name="Minimum",
             description="Absolute minimum block Height",
             default=0.25,
             min=0.01, max=100.0
             )
-    Depth = FloatProperty(
+    Depth: FloatProperty(
             name="Depth",
             description="Average Depth of each block",
             default=2.0,
             min=0.01, max=100.0
             )
-    DepthVariance = FloatProperty(
+    DepthVariance: FloatProperty(
             name="Variance",
             description="Random variance of block Depth",
             default=0.1,
             min=0.0, max=100.0
             )
-    DepthMinimum = FloatProperty(
+    DepthMinimum: FloatProperty(
             name="Minimum",
             description="Absolute minimum block Depth",
             default=1.0,
             min=0.01, max=100.0
             )
-    MergeBlock = BoolProperty(
+    MergeBlock: BoolProperty(
             name="Merge Blocks",
             description="Make big blocks (merge closely adjoining blocks)",
             default=False
             )
     # edging for blocks
-    Grout = FloatProperty(
+    Grout: FloatProperty(
             name="Thickness",
             description="Distance between blocks",
             default=0.1,
             min=-10.0, max=10.0
             )
-    GroutVariance = FloatProperty(
+    GroutVariance: FloatProperty(
             name="Variance",
             description="Random variance of block Grout",
             default=0.03,
             min=0.0, max=100.0
             )
-    GroutDepth = FloatProperty(
+    GroutDepth: FloatProperty(
             name="Depth",
             description="Grout Depth from the face of the blocks",
             default=0.1,
             min=0.0001, max=10.0
             )
-    GroutDepthVariance = FloatProperty(
+    GroutDepthVariance: FloatProperty(
             name="Variance",
             description="Random variance of block Grout Depth",
             default=0.03,
             min=0.0, max=100.0
             )
-    GroutEdge = BoolProperty(
+    GroutEdge: BoolProperty(
             name="Edging",
             description="Grout perimiter",
             default=False
             )
     # properties for openings
-    Opening1Tog = BoolProperty(
+    Opening1Tog: BoolProperty(
             name="Opening(s)",
             description="Make windows or doors",
             default=True
             )
-    Opening1Width = FloatProperty(
+    Opening1Width: FloatProperty(
             name="Width",
             description="The Width of the first opening",
             default=2.5,
             min=0.01, max=100.0
             )
-    Opening1Height = FloatProperty(
+    Opening1Height: FloatProperty(
             name="Height",
             description="The Height of the first opening",
             default=3.5,
             min=0.01, max=100.0
             )
-    Opening1X = FloatProperty(
+    Opening1X: FloatProperty(
             name="Indent",
             description="The x position or spacing of the first opening",
             default=5.0,
             min=-100, max=100.0
             )
-    Opening1Z = FloatProperty(
+    Opening1Z: FloatProperty(
             name="Bottom",
             description="The z position of the First opening",
             default=5.0,
             min=-100, max=100.0
             )
-    Opening1Repeat = BoolProperty(
+    Opening1Repeat: BoolProperty(
             name="Repeat",
             description="make multiple openings, with spacing X1",
             default=False
             )
-    Opening1TopArchTog = BoolProperty(
+    Opening1TopArchTog: BoolProperty(
             name="Top Arch",
             description="Add an arch to the top of the first opening",
             default=True
             )
-    Opening1TopArch = FloatProperty(
+    Opening1TopArch: FloatProperty(
             name="Curve",
             description="Height of the arch on the top of the opening",
             default=2.5,
             min=0.001, max=100.0
             )
-    Opening1TopArchThickness = FloatProperty(
+    Opening1TopArchThickness: FloatProperty(
             name="Thickness",
             description="Thickness of the arch on the top of the opening",
             default=0.75,
             min=0.001, max=100.0
             )
-    Opening1BtmArchTog = BoolProperty(
+    Opening1BtmArchTog: BoolProperty(
             name="Bottom Arch",
             description="Add an arch to the bottom of opening 1",
             default=False
             )
-    Opening1BtmArch = FloatProperty(
+    Opening1BtmArch: FloatProperty(
             name="Curve",
             description="Height of the arch on the bottom of the opening",
             default=1.0,
             min=0.01, max=100.0
             )
-    Opening1BtmArchThickness = FloatProperty(
+    Opening1BtmArchThickness: FloatProperty(
             name="Thickness",
             description="Thickness of the arch on the bottom of the opening",
             default=0.5,
             min=0.01, max=100.0
             )
-    Opening1Bevel = FloatProperty(
+    Opening1Bevel: FloatProperty(
             name="Bevel",
             description="Angle block face",
             default=0.25,
             min=-10.0, max=10.0
             )
     # openings on top of wall
-    CrenelTog = BoolProperty(
+    CrenelTog: BoolProperty(
             name="Crenels",
             description="Make openings along top of wall",
             default=False
             )
-    CrenelXP = FloatProperty(
+    CrenelXP: FloatProperty(
             name="Width",
             description="Gap width in wall based the percentage of wall width",
             default=0.25,
             min=0.10, max=1.0,
             subtype="PERCENTAGE"
             )
-    CrenelZP = FloatProperty(
+    CrenelZP: FloatProperty(
             name="Height",
             description="Crenel Height as the percentage of wall height",
             default=0.10,
@@ -304,166 +304,166 @@ class add_mesh_wallb(Operator):
             )
     # narrow openings in wall.
     # need to prevent overlap with arch openings - though inversion is an interesting effect.
-    SlotTog = BoolProperty(
+    SlotTog: BoolProperty(
             name="Slots",
             description="Make narrow openings in wall",
             default=False
             )
-    SlotRpt = BoolProperty(
+    SlotRpt: BoolProperty(
             name="Repeat",
             description="Repeat slots along wall",
             default=False
             )
-    SlotWdg = BoolProperty(
+    SlotWdg: BoolProperty(
             name="Wedged (n/a)",
             description="Bevel edges of slots",
             default=False
             )
-    SlotX = FloatProperty(
+    SlotX: FloatProperty(
             name="Indent",
             description="The x position or spacing of slots",
             default=0.0, min=-100, max=100.0
             )
-    SlotGap = FloatProperty(
+    SlotGap: FloatProperty(
             name="Opening",
             description="The opening size of slots",
             default=0.5, min=0.10, max=100.0
             )
-    SlotV = BoolProperty(
+    SlotV: BoolProperty(
             name="Vertical",
             description="Vertical slots",
             default=True
             )
-    SlotVH = FloatProperty(
+    SlotVH: FloatProperty(
             name="Height",
             description="Height of vertical slot",
             default=3.5,
             min=0.10, max=100.0
             )
-    SlotVBtm = FloatProperty(
+    SlotVBtm: FloatProperty(
             name="Bottom",
             description="Z position for slot",
             default=5.00,
             min=-100.0, max=100.0
             )
-    SlotH = BoolProperty(
+    SlotH: BoolProperty(
             name="Horizontal",
             description="Horizontal slots",
             default=False
             )
-    SlotHW = FloatProperty(
+    SlotHW: FloatProperty(
             name="Width",
             description="Width of horizontal slot",
             default=2.5,
             min=0.10, max=100.0
             )
     # this should offset from VBtm... maybe make a % like crenels?
-    SlotHBtm = FloatProperty(
+    SlotHBtm: FloatProperty(
             name="Bottom",
             description="Z position for horizontal slot",
             default=5.50,
             min=-100.0, max=100.0
             )
     # properties for shelf (extend blocks in area)
-    ShelfTog = BoolProperty(
+    ShelfTog: BoolProperty(
             name="Shelf",
             description="Add blocks in area by depth to make shelf/platform",
             default=False
             )
-    ShelfX = FloatProperty(
+    ShelfX: FloatProperty(
             name="Left",
             description="The x position of Shelf",
             default=-5.00,
             min=-100, max=100.0
             )
-    ShelfZ = FloatProperty(
+    ShelfZ: FloatProperty(
             name="Bottom",
             description="The z position of Shelf",
             default=10.0,
             min=-100, max=100.0
             )
-    ShelfH = FloatProperty(
+    ShelfH: FloatProperty(
             name="Height",
             description="The Height of Shelf area",
             default=1.0,
             min=0.01, max=100.0
             )
-    ShelfW = FloatProperty(
+    ShelfW: FloatProperty(
             name="Width",
             description="The Width of shelf area",
             default=5.0,
             min=0.01, max=100.0
             )
-    ShelfD = FloatProperty(
+    ShelfD: FloatProperty(
             name="Depth",
             description="Depth of each block for shelf (from cursor + 1/2 wall depth)",
             default=2.0,
             min=0.01, max=100.0
             )
-    ShelfBack = BoolProperty(
+    ShelfBack: BoolProperty(
             name="Backside",
             description="Shelf on backside of wall",
             default=False
             )
     # properties for steps (extend blocks in area,  progressive width)
-    StepTog = BoolProperty(
+    StepTog: BoolProperty(
             name="Steps",
             description="Add blocks in area by depth with progressive width to make steps",
             default=False
             )
-    StepX = FloatProperty(
+    StepX: FloatProperty(
             name="Left",
             description="The x position of steps",
             default=-9.00,
             min=-100, max=100.0
             )
-    StepZ = FloatProperty(
+    StepZ: FloatProperty(
             name="Bottom",
             description="The z position of steps",
             default=0.0,
             min=-100, max=100.0
             )
-    StepH = FloatProperty(
+    StepH: FloatProperty(
             name="Height",
             description="The Height of step area",
             default=10.0,
             min=0.01, max=100.0
             )
-    StepW = FloatProperty(
+    StepW: FloatProperty(
             name="Width",
             description="The Width of step area",
             default=8.0,
             min=0.01, max=100.0
             )
-    StepD = FloatProperty(
+    StepD: FloatProperty(
             name="Depth",
             description="Depth of each block for steps (from cursor + 1/2 wall depth)",
             default=1.0,
             min=0.01, max=100.0
             )
-    StepV = FloatProperty(
+    StepV: FloatProperty(
             name="Riser",
             description="Height of each step",
             default=0.70,
             min=0.01, max=100.0
             )
-    StepT = FloatProperty(
+    StepT: FloatProperty(
             name="Tread",
             description="Width of each step",
             default=1.0,
             min=0.01, max=100.0
             )
-    StepLeft = BoolProperty(
+    StepLeft: BoolProperty(
             name="Direction",
             description="If checked, flip steps direction towards the -X axis",
             default=False
             )
-    StepOnly = BoolProperty(
+    StepOnly: BoolProperty(
             name="Steps Only",
             description="Steps only, no supporting blocks",
             default=False
             )
-    StepBack = BoolProperty(
+    StepBack: BoolProperty(
             name="Backside",
             description="Steps on backside of wall",
             default=False
diff --git a/add_mesh_extra_objects/__init__.py b/add_mesh_extra_objects/__init__.py
index 1197738c..c481d53d 100644
--- a/add_mesh_extra_objects/__init__.py
+++ b/add_mesh_extra_objects/__init__.py
@@ -253,94 +253,94 @@ class VIEW3D_MT_mesh_pipe_joints_add(Menu):
 class discombobulator_scene_props(bpy.types.PropertyGroup):
     DISC_doodads = []
     # Protusions Buttons:
-    repeatprot = IntProperty(
+    repeatprot: IntProperty(
             name="Repeat protusions",
             description=("Make several layers of protusion \n"
                          "Use carefully, runs recursively the discombulator"),
             default=1, min=1, max=4  # set to 4 because it's 2**n reqursive
             )
-    doprots = BoolProperty(
+    doprots: BoolProperty(
             name="Make protusions",
             description="Check if we want to add protusions to the mesh",
             default=True
             )
-    subpolygon1 = BoolProperty(
+    subpolygon1: BoolProperty(
             name="1",
             default=True
             )
-    subpolygon2 = BoolProperty(
+    subpolygon2: BoolProperty(
             name="2",
             default=True
             )
-    subpolygon3 = BoolProperty(
+    subpolygon3: BoolProperty(
             name="3",
             default=True
             )
-    subpolygon4 = BoolProperty(
+    subpolygon4: BoolProperty(
             name="4",
             default=True
             )
-    polygonschangedpercent = FloatProperty(
+    polygonschangedpercent: FloatProperty(
             name="Polygon %",
             description="Percentage of changed polygons",
             default=1.0
             )
-    minHeight = FloatProperty(
+    minHeight: FloatProperty(
             name="Min height",
             description="Minimal height of the protusions",
             default=0.2
             )
-    maxHeight = FloatProperty(
+    maxHeight: FloatProperty(
             name="Max height",
             description="Maximal height of the protusions",
             default=0.4
             )
-    minTaper = FloatProperty(
+    minTaper: FloatProperty(
             name="Min taper",
             description="Minimal height of the protusions",
             default=0.15, min=0.0, max=1.0,
             subtype='PERCENTAGE'
             )
-    maxTaper = FloatProperty(
+    maxTaper: FloatProperty(
             name="Max taper",
             description="Maximal height of the protusions",
             default=0.35, min=0.0, max=1.0,
             subtype='PERCENTAGE'
             )
     # Doodads buttons:
-    dodoodads = BoolProperty(
+    dodoodads: BoolProperty(
             name="Make doodads",
             description="Check if we want to generate doodads",
             default=False
             )
-    mindoodads = IntProperty(
+    mindoodads: IntProperty(
             name="Minimum doodads number",
             description="Ask for the minimum number of doodads to generate per polygon",
             default=1, min=0, max=50
             )
-    maxdoodads = IntProperty(
+    maxdoodads: IntProperty(
             name="Maximum doodads number",
             description="Ask for the maximum number of doodads to generate per polygon",
             default=6, min=1, max=50
             )
-    doodMinScale = FloatProperty(
+    doodMinScale: FloatProperty(
             name="Scale min", description="Minimum scaling of doodad",
             default=0.5, min=0.0, max=1.0,
             subtype='PERCENTAGE'
             )
-    doodMaxScale = FloatProperty(
+    doodMaxScale: FloatProperty(
             name="Scale max",
             description="Maximum scaling of doodad",
             default=1.0, min=0.0, max=1.0,
             subtype='PERCENTAGE'
             )
     # Materials buttons:
-    sideProtMat = IntProperty(
+    sideProtMat: IntProperty(
             name="Side's prot mat",
             description="Material of protusion's sides",
             default=0, min=0
             )
-    topProtMat = IntProperty(
+    topProtMat: IntProperty(
             name="Prot's top mat",
             description="Material of protusion's top",
             default=0, min=0
diff --git a/add_mesh_extra_objects/add_empty_as_parent.py b/add_mesh_extra_objects/add_empty_as_parent.py
index a6ae69e6..0d4716a3 100644
--- a/add_mesh_extra_objects/add_empty_as_parent.py
+++ b/add_mesh_extra_objects/add_empty_as_parent.py
@@ -22,24 +22,24 @@ class P2E(Operator):
     bl_description = "Parent selected objects to a new Empty"
     bl_options = {"REGISTER", "UNDO"}
 
-    nombre = StringProperty(
+    nombre: StringProperty(
                     name="",
                     default='OBJECTS',
                     description='Give the empty / group a name'
                     )
-    grupo = BoolProperty(
+    grupo: BoolProperty(
                     name="Create Group",
                     default=False,
                     description="Also add objects to a group"
                     )
-    locat = EnumProperty(
+    locat: EnumProperty(
                     name='',
                     items=[('CURSOR', 'Cursor', 'Cursor'), ('ACTIVE', 'Active', 'Active'),
                            ('CENTER', 'Center', 'Selection Center')],
                     description='Empty location',
                     default='CENTER'
                    )
-    renom = BoolProperty(
+    renom: BoolProperty(
                     name="Add Prefix",
                     default=False,
                     description="Add prefix to objects name"
diff --git a/add_mesh_extra_objects/add_mesh_3d_function_surface.py b/add_mesh_extra_objects/add_mesh_3d_function_surface.py
index 616add3f..eb2b53c1 100644
--- a/add_mesh_extra_objects/add_mesh_3d_function_surface.py
+++ b/add_mesh_extra_objects/add_mesh_3d_function_surface.py
@@ -116,26 +116,26 @@ class AddZFunctionSurface(Operator):
     bl_description = "Add a surface defined defined by a function z=f(x,y)"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    equation = StringProperty(
+    equation: StringProperty(
                 name="Z Equation",
                 description="Equation for z=f(x,y)",
                 default="1 - ( x**2 + y**2 )"
                 )
-    div_x = IntProperty(
+    div_x: IntProperty(
                 name="X Subdivisions",
                 description="Number of vertices in x direction",
                 default=16,
                 min=3,
                 max=256
                 )
-    div_y = IntProperty(
+    div_y: IntProperty(
                 name="Y Subdivisions",
                 description="Number of vertices in y direction",
                 default=16,
                 min=3,
                 max=256
                 )
-    size_x = FloatProperty(
+    size_x: FloatProperty(
                 name="X Size",
                 description="Size of the x axis",
                 default=2.0,
@@ -143,7 +143,7 @@ class AddZFunctionSurface(Operator):
                 max=100.0,
                 unit="LENGTH"
                 )
-    size_y = FloatProperty(
+    size_y: FloatProperty(
                 name="Y Size",
                 description="Size of the y axis",
                 default=2.0,
@@ -383,83 +383,83 @@ class AddXYZFunctionSurface(Operator):
                       "x=F1(u,v), y=F2(u,v) and z=F3(u,v)")
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    x_eq = StringProperty(
+    x_eq: StringProperty(
                 name="X equation",
                 description="Equation for x=F(u,v). "
                             "Also available: n, a, b, c, f, g, h",
                 default="cos(v)*(1+cos(u))*sin(v/8)"
                 )
-    y_eq = StringProperty(
+    y_eq: StringProperty(
                 name="Y equation",
                 description="Equation for y=F(u,v). "
                             "Also available: n, a, b, c, f, g, h",
                 default="sin(u)*sin(v/8)+cos(v/8)*1.5"
                 )
-    z_eq = StringProperty(
+    z_eq: StringProperty(
                 name="Z equation",
                 description="Equation for z=F(u,v). "
                             "Also available: n, a, b, c, f, g, h",
                 default="sin(v)*(1+cos(u))*sin(v/8)"
                 )
-    range_u_min = FloatProperty(
+    range_u_min: FloatProperty(
                 name="U min",
                 description="Minimum U value. Lower boundary of U range",
                 min=-100.00,
                 max=0.00,
                 default=0.00
                 )
-    range_u_max = FloatProperty(
+    range_u_max: FloatProperty(
                 name="U max",
                 description="Maximum U value. Upper boundary of U range",
                 min=0.00,
                 max=100.00,
                 default=2 * pi
                 )
-    range_u_step = IntProperty(
+    range_u_step: IntProperty(
                 name="U step",
                 description="U Subdivisions",
                 min=1,
                 max=1024,
                 default=32
                 )
-    wrap_u = BoolProperty(
+    wrap_u: BoolProperty(
                 name="U wrap",
                 description="U Wrap around",
                 default=True
                 )
-    range_v_min = FloatProperty(
+    range_v_min: FloatProperty(
                 name="V min",
                 description="Minimum V value. Lower boundary of V range",
                 min=-100.00,
                 max=0.00,
                 default=0.00
                 )
-    range_v_max = FloatProperty(
+    range_v_max: FloatProperty(
                 name="V max",
                 description="Maximum V value. Upper boundary of V range",
                 min=0.00,
                 max=100.00,
                 default=4 * pi
                 )
-    range_v_step = IntProperty(
+    range_v_step: IntProperty(
                 name="V step",
                 description="V Subdivisions",
                 min=1,
                 max=1024,
                 default=128
                 )
-    wrap_v = BoolProperty(
+    wrap_v: BoolProperty(
                 name="V wrap",
                 description="V Wrap around",
                 default=False
                 )
-    close_v = BoolProperty(
+    close_v: BoolProperty(
                 name="Close V",
                 description="Create faces for first and last "
                             "V values (only if U is wrapped)",
                 default=False
                 )
-    n_eq = IntProperty(
+    n_eq: IntProperty(
                 name="Number of objects (n=0..N-1)",
                 description="The parameter n will be the index "
                             "of the current object, 0 to N-1",
@@ -467,32 +467,32 @@ class AddXYZFunctionSurface(Operator):
                 max=100,
                 default=1
                 )
-    a_eq = StringProperty(
+    a_eq: StringProperty(
                 name="A helper function",
                 description="Equation for a=F(u,v). Also available: n",
                 default="0"
                 )
-    b_eq = StringProperty(
+    b_eq: StringProperty(
                 name="B helper function",
                 description="Equation for b=F(u,v). Also available: n",
                 default="0"
                 )
-    c_eq = StringProperty(
+    c_eq: StringProperty(
                 name="C helper function",
                 description="Equation for c=F(u,v). Also available: n",
                 default="0"
                 )
-    f_eq = StringProperty(
+    f_eq: StringProperty(
                 name="F helper function",
                 description="Equation for f=F(u,v). Also available: n, a, b, c",
                 default="0"
                 )
-    g_eq = StringProperty(
+    g_eq: StringProperty(
                 name="G helper function",
                 description="Equation for g=F(u,v). Also available: n, a, b, c",
                 default="0"
                 )
-    h_eq = StringProperty(
+    h_eq: StringProperty(
                 name="H helper function",
                 description="Equation for h=F(u,v). Also available: n, a, b, c",
                 default="0"
diff --git a/add_mesh_extra_objects/add_mesh_beam_builder.py b/add_mesh_extra_objects/add_mesh_beam_builder.py
index ba8ae6fc..8c876953 100644
--- a/add_mesh_extra_objects/add_mesh_beam_builder.py
+++ b/add_mesh_extra_objects/add_mesh_beam_builder.py
@@ -694,7 +694,7 @@ class addBeam(Operator):
     bl_description = "Create beam meshes of various profiles"
     bl_options = {'REGISTER', 'UNDO'}
 
-    Type = EnumProperty(
+    Type: EnumProperty(
             items=(
             ('0', "Box Profile", "Square Beam"),
             ("1", "U Profile", "U Profile Beam"),
@@ -705,34 +705,34 @@ class addBeam(Operator):
             ),
             description="Beam form"
             )
-    beamZ = FloatProperty(
+    beamZ: FloatProperty(
             name="Height",
             min=0.01, max=100,
             default=1
             )
-    beamX = FloatProperty(
+    beamX: FloatProperty(
             name="Width",
             min=0.01, max=100,
             default=.5
             )
-    beamY = FloatProperty(
+    beamY: FloatProperty(
             name="Depth",
             min=0.01,
             max=100,
             default=2
             )
-    beamW = FloatProperty(
+    beamW: FloatProperty(
             name="Thickness",
             min=0.01, max=1,
             default=0.1
             )
-    edgeA = IntProperty(
+    edgeA: IntProperty(
             name="Taper",
             min=0, max=100,
             default=0,
             description="Angle beam edges"
             )
-    Cursor = BoolProperty(
+    Cursor: BoolProperty(
             name="Use 3D Cursor",
             default=False,
             description="Draw the beam where the 3D Cursor is"
diff --git a/add_mesh_extra_objects/add_mesh_gears.py b/add_mesh_extra_objects/add_mesh_gears.py
index 6a7bafd9..c631f394 100644
--- a/add_mesh_extra_objects/add_mesh_gears.py
+++ b/add_mesh_extra_objects/add_mesh_gears.py
@@ -554,69 +554,69 @@ class AddGear(Operator):
     bl_description = "Construct a gear mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    number_of_teeth = IntProperty(name="Number of Teeth",
+    number_of_teeth: IntProperty(name="Number of Teeth",
             description="Number of teeth on the gear",
             min=2,
             max=265,
             default=12
             )
-    radius = FloatProperty(name="Radius",
+    radius: FloatProperty(name="Radius",
             description="Radius of the gear, negative for crown gear",
             min=-100.0,
             max=100.0,
             unit='LENGTH',
             default=1.0
             )
-    addendum = FloatProperty(name="Addendum",
+    addendum: FloatProperty(name="Addendum",
             description="Addendum, extent of tooth above radius",
             min=0.01,
             max=100.0,
             unit='LENGTH',
             default=0.1
             )
-    dedendum = FloatProperty(name="Dedendum",
+    dedendum: FloatProperty(name="Dedendum",
             description="Dedendum, extent of tooth below radius",
             min=0.0,
             max=100.0,
             unit='LENGTH',
             default=0.1
             )
-    angle = FloatProperty(name="Pressure Angle",
+    angle: FloatProperty(name="Pressure Angle",
             description="Pressure angle, skewness of tooth tip",
             min=0.0,
             max=radians(45.0),
             unit='ROTATION',
             default=radians(20.0)
             )
-    base = FloatProperty(name="Base",
+    base: FloatProperty(name="Base",
             description="Base, extent of gear below radius",
             min=0.0,
             max=100.0,
             unit='LENGTH',
             default=0.2
             )
-    width = FloatProperty(name="Width",
+    width: FloatProperty(name="Width",
             description="Width, thickness of gear",
             min=0.05,
             max=100.0,
             unit='LENGTH',
             default=0.2
             )
-    skew = FloatProperty(name="Skewness",
+    skew: FloatProperty(name="Skewness",
             description="Skew of teeth",
             min=radians(-90.0),
             max=radians(90.0),
             unit='ROTATION',
             default=radians(0.0)
             )
-    conangle = FloatProperty(name="Conical angle",
+    conangle: FloatProperty(name="Conical angle",
             description="Conical angle of gear",
             min=0.0,
             max=radians(90.0),
             unit='ROTATION',
             default=radians(0.0)
             )
-    crown = FloatProperty(name="Crown",
+    crown: FloatProperty(name="Crown",
             description="Inward pointing extend of crown teeth",
             min=0.0,
             max=100.0,
@@ -681,21 +681,21 @@ class AddWormGear(Operator):
     bl_description = "Construct a worm gear mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    number_of_teeth = IntProperty(
+    number_of_teeth: IntProperty(
             name="Number of Teeth",
             description="Number of teeth on the gear",
             min=2,
             max=265,
             default=12
             )
-    number_of_rows = IntProperty(
+    number_of_rows: IntProperty(
             name="Number of Rows",
             description="Number of rows on the worm gear",
             min=2,
             max=265,
             default=32
             )
-    radius = FloatProperty(
+    radius: FloatProperty(
             name="Radius",
             description="Radius of the gear, negative for crown gear",
             min=-100.0,
@@ -703,7 +703,7 @@ class AddWormGear(Operator):
             unit='LENGTH',
             default=1.0
             )
-    addendum = FloatProperty(
+    addendum: FloatProperty(
             name="Addendum",
             description="Addendum, extent of tooth above radius",
             min=0.01,
@@ -711,7 +711,7 @@ class AddWormGear(Operator):
             unit='LENGTH',
             default=0.1
             )
-    dedendum = FloatProperty(
+    dedendum: FloatProperty(
             name="Dedendum",
             description="Dedendum, extent of tooth below radius",
             min=0.0,
@@ -719,7 +719,7 @@ class AddWormGear(Operator):
             unit='LENGTH',
             default=0.1
             )
-    angle = FloatProperty(
+    angle: FloatProperty(
             name="Pressure Angle",
             description="Pressure angle, skewness of tooth tip",
             min=0.0,
@@ -727,7 +727,7 @@ class AddWormGear(Operator):
             default=radians(20.0),
             unit='ROTATION'
             )
-    row_height = FloatProperty(
+    row_height: FloatProperty(
             name="Row Height",
             description="Height of each Row",
             min=0.05,
@@ -735,7 +735,7 @@ class AddWormGear(Operator):
             unit='LENGTH',
             default=0.2
             )
-    skew = FloatProperty(
+    skew: FloatProperty(
             name="Skewness per Row",
             description="Skew of each row",
             min=radians(-90.0),
@@ -743,7 +743,7 @@ class AddWormGear(Operator):
             default=radians(11.25),
             unit='ROTATION'
             )
-    crown = FloatProperty(
+    crown: FloatProperty(
             name="Crown",
             description="Inward pointing extend of crown teeth",
             min=0.0,
diff --git a/add_mesh_extra_objects/add_mesh_gemstones.py b/add_mesh_extra_objects/add_mesh_gemstones.py
index 0da6b488..a07c9f66 100644
--- a/add_mesh_extra_objects/add_mesh_gemstones.py
+++ b/add_mesh_extra_objects/add_mesh_gemstones.py
@@ -211,35 +211,35 @@ class AddDiamond(Operator):
     bl_description = "Construct a diamond mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    segments = IntProperty(
+    segments: IntProperty(
             name="Segments",
             description="Number of segments for the diamond",
             min=3,
             max=256,
             default=32
             )
-    girdle_radius = FloatProperty(
+    girdle_radius: FloatProperty(
             name="Girdle Radius",
             description="Girdle radius of the diamond",
             min=0.01,
             max=9999.0,
             default=1.0
             )
-    table_radius = FloatProperty(
+    table_radius: FloatProperty(
             name="Table Radius",
             description="Girdle radius of the diamond",
             min=0.01,
             max=9999.0,
             default=0.6
             )
-    crown_height = FloatProperty(
+    crown_height: FloatProperty(
             name="Crown Height",
             description="Crown height of the diamond",
             min=0.01,
             max=9999.0,
             default=0.35
             )
-    pavilion_height = FloatProperty(
+    pavilion_height: FloatProperty(
             name="Pavilion Height",
             description="Pavilion height of the diamond",
             min=0.01,
@@ -265,35 +265,35 @@ class AddGem(Operator):
     bl_description = "Construct an offset faceted gem mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    segments = IntProperty(
+    segments: IntProperty(
             name="Segments",
             description="Longitudial segmentation",
             min=3,
             max=265,
             default=8
             )
-    pavilion_radius = FloatProperty(
+    pavilion_radius: FloatProperty(
             name="Radius",
             description="Radius of the gem",
             min=0.01,
             max=9999.0,
             default=1.0
             )
-    crown_radius = FloatProperty(
+    crown_radius: FloatProperty(
             name="Table Radius",
             description="Radius of the table(top)",
             min=0.01,
             max=9999.0,
             default=0.6
             )
-    crown_height = FloatProperty(
+    crown_height: FloatProperty(
             name="Table height",
             description="Height of the top half",
             min=0.01,
             max=9999.0,
             default=0.35
             )
-    pavilion_height = FloatProperty(
+    pavilion_height: FloatProperty(
             name="Pavilion height",
             description="Height of bottom half",
             min=0.01,
diff --git a/add_mesh_extra_objects/add_mesh_honeycomb.py b/add_mesh_extra_objects/add_mesh_honeycomb.py
index 357be4cb..90d69b2d 100644
--- a/add_mesh_extra_objects/add_mesh_honeycomb.py
+++ b/add_mesh_extra_objects/add_mesh_honeycomb.py
@@ -218,13 +218,13 @@ class add_mesh_honeycomb(bpy.types.Operator):
         if self.edge > m:
             self.edge = m
 
-    rows = IntProperty(
+    rows: IntProperty(
             name="Num of rows",
             default=2,
             min=1, max=100,
             description='Number of the rows'
             )
-    cols = IntProperty(
+    cols: IntProperty(
             name='Num of cols',
             default=2,
             min=1, max=100,
@@ -236,28 +236,28 @@ class add_mesh_honeycomb(bpy.types.Operator):
             subtype='LAYER',
             options={'HIDDEN', 'SKIP_SAVE'},
             )
-    diam = FloatProperty(
+    diam: FloatProperty(
             name='Cell Diameter',
             default=1.0,
             min=0.0, update=fix_edge,
             description='Diameter of the cell'
             )
-    edge = FloatProperty(
+    edge: FloatProperty(
             name='Edge Width',
             default=0.1,
             min=0.0, update=fix_edge,
             description='Width of the edge'
             )
     # generic transform props
-    view_align = BoolProperty(
+    view_align: BoolProperty(
             name="Align to View",
             default=False
             )
-    location = FloatVectorProperty(
+    location: FloatVectorProperty(
             name="Location",
             subtype='TRANSLATION'
             )
-    rotation = FloatVectorProperty(
+    rotation: FloatVectorProperty(
             name="Rotation",
             subtype='EULER'
             )
diff --git a/add_mesh_extra_objects/add_mesh_menger_sponge.py b/add_mesh_extra_objects/add_mesh_menger_sponge.py
index d0d25d9e..df4fcb21 100644
--- a/add_mesh_extra_objects/add_mesh_menger_sponge.py
+++ b/add_mesh_extra_objects/add_mesh_menger_sponge.py
@@ -144,28 +144,28 @@ class AddMengerSponge(bpy.types.Operator):
     bl_description = "Construct a menger sponge mesh"
     bl_options = {'REGISTER', 'UNDO'}
 
-    level = IntProperty(
+    level: IntProperty(
             name="Level",
             description="Sponge Level",
             min=0, max=4,
             default=1,
             )
-    radius = FloatProperty(
+    radius: FloatProperty(
             name="Width",
             description="Sponge Radius",
             min=0.01, max=100.0,
             default=1.0,
             )
     # generic transform props
-    view_align = BoolProperty(
+    view_align: BoolProperty(
             name="Align to View",
             default=False,
             )
-    location = FloatVectorProperty(
+    location: FloatVectorProperty(
             name="Location",
             subtype='TRANSLATION',
             )
-    rotation = FloatVectorProperty(
+    rotation: FloatVectorProperty(
             name="Rotation",
             subtype='EULER',
             )
diff --git a/add_mesh_extra_objects/add_mesh_pipe_joint.py b/add_mesh_extra_objects/add_mesh_pipe_joint.py
index c0a995d8..0fe5d67b 100644
--- a/add_mesh_extra_objects/add_mesh_pipe_joint.py
+++ b/add_mesh_extra_objects/add_mesh_pipe_joint.py
@@ -94,7 +94,7 @@ class AddElbowJoint(Operator):
     bl_description = "Construct an elbow pipe mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    radius = FloatProperty(
+    radius: FloatProperty(
         name="Radius",
         description="The radius of the pipe",
         default=1.0,
@@ -102,12 +102,12 @@ class AddElbowJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    div = IntProperty(
+    div: IntProperty(
         name="Divisions",
         description="Number of vertices (divisions)",
         default=32, min=3, max=256
         )
-    angle = FloatProperty(
+    angle: FloatProperty(
         name="Angle",
         description="The angle of the branching pipe (i.e. the 'arm' - "
                     "Measured from the center line of the main pipe",
@@ -116,7 +116,7 @@ class AddElbowJoint(Operator):
         max=radians(179.9),
         unit="ROTATION"
         )
-    startLength = FloatProperty(
+    startLength: FloatProperty(
         name="Length Start",
         description="Length of the beginning of the pipe",
         default=3.0,
@@ -124,7 +124,7 @@ class AddElbowJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    endLength = FloatProperty(
+    endLength: FloatProperty(
         name="End Length",
         description="Length of the end of the pipe",
         default=3.0,
@@ -203,7 +203,7 @@ class AddTeeJoint(Operator):
     bl_description = "Construct a tee-joint pipe mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    radius = FloatProperty(
+    radius: FloatProperty(
         name="Radius",
         description="The radius of the pipe",
         default=1.0,
@@ -211,14 +211,14 @@ class AddTeeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    div = IntProperty(
+    div: IntProperty(
         name="Divisions",
         description="Number of vertices (divisions)",
         default=32,
         min=4,
         max=256
         )
-    angle = FloatProperty(
+    angle: FloatProperty(
         name="Angle",
         description="The angle of the branching pipe (i.e. the 'arm' - "
                     "Measured from the center line of the main pipe",
@@ -227,7 +227,7 @@ class AddTeeJoint(Operator):
         max=radians(179.9),
         unit="ROTATION"
         )
-    startLength = FloatProperty(
+    startLength: FloatProperty(
         name="Length Start",
         description="Length of the beginning of the"
                     " main pipe (the straight one)",
@@ -236,7 +236,7 @@ class AddTeeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    endLength = FloatProperty(
+    endLength: FloatProperty(
         name="End Length",
         description="Length of the end of the"
                     " main pipe (the straight one)",
@@ -245,7 +245,7 @@ class AddTeeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    branchLength = FloatProperty(
+    branchLength: FloatProperty(
         name="Arm Length",
         description="Length of the arm pipe (the bent one)",
         default=3.0,
@@ -385,7 +385,7 @@ class AddWyeJoint(Operator):
     bl_description = "Construct a wye-joint pipe mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    radius = FloatProperty(
+    radius: FloatProperty(
         name="Radius",
         description="The radius of the pipe",
         default=1.0,
@@ -393,14 +393,14 @@ class AddWyeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    div = IntProperty(
+    div: IntProperty(
         name="Divisions",
         description="Number of vertices (divisions)",
         default=32,
         min=4,
         max=256
         )
-    angle1 = FloatProperty(
+    angle1: FloatProperty(
         name="Angle 1",
         description="The angle of the 1. branching pipe "
                     "(measured from the center line of the main pipe)",
@@ -409,7 +409,7 @@ class AddWyeJoint(Operator):
         max=radians(179.9),
         unit="ROTATION"
         )
-    angle2 = FloatProperty(
+    angle2: FloatProperty(
         name="Angle 2",
         description="The angle of the 2. branching pipe "
                     "(measured from the center line of the main pipe) ",
@@ -418,7 +418,7 @@ class AddWyeJoint(Operator):
         max=radians(179.9),
         unit="ROTATION"
         )
-    startLength = FloatProperty(
+    startLength: FloatProperty(
         name="Length Start",
         description="Length of the beginning of the"
                     " main pipe (the straight one)",
@@ -427,7 +427,7 @@ class AddWyeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    branch1Length = FloatProperty(
+    branch1Length: FloatProperty(
         name="Length Arm 1",
         description="Length of the 1. arm",
         default=3.0,
@@ -435,7 +435,7 @@ class AddWyeJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    branch2Length = FloatProperty(
+    branch2Length: FloatProperty(
         name="Length Arm 2",
         description="Length of the 2. arm",
         default=3.0,
@@ -587,7 +587,7 @@ class AddCrossJoint(Operator):
     bl_description = "Construct a cross-joint pipe mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    radius = FloatProperty(
+    radius: FloatProperty(
         name="Radius",
         description="The radius of the pipe",
         default=1.0,
@@ -595,14 +595,14 @@ class AddCrossJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    div = IntProperty(
+    div: IntProperty(
         name="Divisions",
         description="Number of vertices (divisions)",
         default=32,
         min=4,
         max=256
         )
-    angle1 = FloatProperty(
+    angle1: FloatProperty(
         name="Angle 1",
         description="The angle of the 1. arm (from the main axis)",
         default=radians(90.0),
@@ -610,21 +610,21 @@ class AddCrossJoint(Operator):
         max=radians(179.9),
         unit="ROTATION"
         )
-    angle2 = FloatProperty(name="Angle 2",
+    angle2: FloatProperty(name="Angle 2",
         description="The angle of the 2. arm (from the main axis)",
         default=radians(90.0),
         min=radians(-179.9),
         max=radians(179.9),
         unit="ROTATION"
         )
-    angle3 = FloatProperty(name="Angle 3 (center)",
+    angle3: FloatProperty(name="Angle 3 (center)",
         description="The angle of the center arm (from the main axis)",
         default=radians(0.0),
         min=radians(-179.9),
         max=radians(179.9),
         unit="ROTATION"
         )
-    startLength = FloatProperty(
+    startLength: FloatProperty(
         name="Length Start",
         description="Length of the beginning of the "
                     "main pipe (the straight one)",
@@ -633,14 +633,14 @@ class AddCrossJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    branch1Length = FloatProperty(name="Length Arm 1",
+    branch1Length: FloatProperty(name="Length Arm 1",
         description="Length of the 1. arm",
         default=3.0,
         min=0.01,
         max=100.0,
         unit="LENGTH"
         )
-    branch2Length = FloatProperty(
+    branch2Length: FloatProperty(
         name="Length Arm 2",
         description="Length of the 2. arm",
         default=3.0,
@@ -648,7 +648,7 @@ class AddCrossJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    branch3Length = FloatProperty(
+    branch3Length: FloatProperty(
         name="Length Arm 3 (center)",
         description="Length of the center arm",
         default=3.0,
@@ -847,7 +847,7 @@ class AddNJoint(Operator):
     bl_description = "Construct a n-joint pipe mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    radius = FloatProperty(
+    radius: FloatProperty(
         name="Radius",
         description="The radius of the pipe",
         default=1.0,
@@ -855,21 +855,21 @@ class AddNJoint(Operator):
         max=100.0,
         unit="LENGTH"
         )
-    div = IntProperty(
+    div: IntProperty(
         name="Divisions",
         description="Number of vertices (divisions)",
         default=32,
         min=4,
         max=256
         )
-    number = IntProperty(
+    number: IntProperty(
         name="Arms / Joints",
         description="Number of joints / arms",
         default=5,
         min=2,
         max=99999
         )
-    length = FloatProperty(
+    length: FloatProperty(
         name="Length",
         description="Length of each joint / arm",
         default=3.0,
diff --git a/add_mesh_extra_objects/add_mesh_pyramid.py b/add_mesh_extra_objects/add_mesh_pyramid.py
index 680267cb..ec41cc4f 100644
--- a/add_mesh_extra_objects/add_mesh_pyramid.py
+++ b/add_mesh_extra_objects/add_mesh_pyramid.py
@@ -107,31 +107,31 @@ class AddPyramid(Operator, AddObjectHelper):
     bl_description = "Construct a step pyramid mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    num_sides = IntProperty(
+    num_sides: IntProperty(
             name="Number Sides",
             description="How many sides each step will have",
             min=3, max=20,
             default=4
             )
-    num_steps = IntProperty(
+    num_steps: IntProperty(
             name="Number of Steps",
             description="How many steps for the overall pyramid",
             min=1, max=20,
             default=10
             )
-    width = FloatProperty(
+    width: FloatProperty(
             name="Initial Width",
             description="Initial base step width",
             min=0.01, max=100.0,
             default=2
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name="Height",
             description="How tall each step will be",
             min=0.01, max=100.0,
             default=0.1
             )
-    reduce_by = FloatProperty(
+    reduce_by: FloatProperty(
             name="Reduce Step By",
             description="How much to reduce each succeeding step by",
             min=.01, max=2.0,
diff --git a/add_mesh_extra_objects/add_mesh_round_brilliant.py b/add_mesh_extra_objects/add_mesh_round_brilliant.py
index d8310c42..b5c0f869 100644
--- a/add_mesh_extra_objects/add_mesh_round_brilliant.py
+++ b/add_mesh_extra_objects/add_mesh_round_brilliant.py
@@ -305,7 +305,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
     # set user options
-    s = IntProperty(
+    s: IntProperty(
             name="Segments",
             description="Longitudial segmentation",
             step=1,
@@ -314,7 +314,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=16,
             subtype='FACTOR'
             )
-    table_w = FloatProperty(
+    table_w: FloatProperty(
             name="Table width",
             description="Width of table",
             min=0.001,
@@ -322,7 +322,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.53,
             subtype='PERCENTAGE'
             )
-    crown_h = FloatProperty(
+    crown_h: FloatProperty(
             name="Crown height",
             description="Height of crown",
             min=0.0,
@@ -330,7 +330,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.162,
             subtype='PERCENTAGE'
             )
-    girdle_t = FloatProperty(
+    girdle_t: FloatProperty(
             name="Girdle height",
             description="Height of girdle",
             min=0.0,
@@ -338,17 +338,17 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.017,
             subtype='PERCENTAGE'
             )
-    girdle_real = BoolProperty(
+    girdle_real: BoolProperty(
             name="Real girdle",
             description="More beautiful girdle; has more polygons",
             default=True
             )
-    g_real_smooth = BoolProperty(
+    g_real_smooth: BoolProperty(
             name="Smooth girdle",
             description="smooth shading for girdle, only available for real girdle",
             default=False
             )
-    pavi_d = FloatProperty(
+    pavi_d: FloatProperty(
             name="Pavilion depth",
             description="Height of pavilion",
             min=0.0,
@@ -356,7 +356,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.431,
             subtype='PERCENTAGE'
             )
-    bezel_f = FloatProperty(
+    bezel_f: FloatProperty(
             name="Upper facet factor",
             description="Determines the form of bezel and upper girdle facets",
             min=0.0,
@@ -364,7 +364,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.250,
             subtype='PERCENTAGE'
             )
-    pavi_f = FloatProperty(
+    pavi_f: FloatProperty(
             name="Lower facet factor",
             description="Determines the form of pavilion and lower girdle facets",
             min=0.001,
@@ -372,7 +372,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.400,
             subtype='PERCENTAGE'
             )
-    culet = FloatProperty(
+    culet: FloatProperty(
             name="Culet size",
             description="0: no culet (default)",
             min=0.0,
@@ -380,7 +380,7 @@ class MESH_OT_primitive_brilliant_add(Operator):
             default=0.0,
             subtype='PERCENTAGE'
             )
-    keep_lga = BoolProperty(
+    keep_lga: BoolProperty(
             name="Retain lower angle",
             description="If culet > 0, retains angle of pavilion facets",
             default=False
diff --git a/add_mesh_extra_objects/add_mesh_round_cube.py b/add_mesh_extra_objects/add_mesh_round_cube.py
index dca438ae..6c39e799 100644
--- a/add_mesh_extra_objects/add_mesh_round_cube.py
+++ b/add_mesh_extra_objects/add_mesh_round_cube.py
@@ -339,27 +339,27 @@ class AddRoundCube(Operator, object_utils.AddObjectHelper):
     sanity_check_verts = 200000
     vert_count = 0
 
-    radius = FloatProperty(
+    radius: FloatProperty(
             name="Radius",
             description="Radius of vertices for sphere, capsule or cuboid bevel",
             default=1.0, min=0.0, soft_min=0.01, step=10
             )
-    size = FloatVectorProperty(
+    size: FloatVectorProperty(
             name="Size",
             description="Size",
             subtype='XYZ',
             )
-    arc_div = IntProperty(
+    arc_div: IntProperty(
             name="Arc Divisions",
             description="Arc curve divisions, per quadrant, 0=derive from Linear",
             default=4, min=1
             )
-    lin_div = FloatProperty(
+    lin_div: FloatProperty(
             name="Linear Divisions",
             description="Linear unit divisions (Edges/Faces), 0=derive from Arc",
             default=0.0, min=0.0, step=100, precision=1
             )
-    div_type = EnumProperty(
+    div_type: EnumProperty(
             name='Type',
             description='Division type',
             items=(
@@ -368,11 +368,11 @@ class AddRoundCube(Operator, object_utils.AddObjectHelper):
                 ('ALL', 'All', 'Sphere / Corners, extruded edges and faces (size)')),
             default='CORNERS',
             )
-    odd_axis_align = BoolProperty(
+    odd_axis_align: BoolProperty(
             name='Odd Axis Align',
             description='Align odd arc divisions with axes (Note: triangle corners!)',
             )
-    no_limit = BoolProperty(
+    no_limit: BoolProperty(
             name='No Limit',
             description='Do not limit to ' + str(sanity_check_verts) + ' vertices (sanity check)',
             options={'HIDDEN'}
diff --git a/add_mesh_extra_objects/add_mesh_solid.py b/add_mesh_extra_objects/add_mesh_solid.py
index e8127e34..98172d37 100644
--- a/add_mesh_extra_objects/add_mesh_solid.py
+++ b/add_mesh_extra_objects/add_mesh_solid.py
@@ -328,7 +328,7 @@ class Solids(bpy.types.Operator):
     bl_description = "Add one of the Platonic, Archimedean or Catalan solids"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    source = EnumProperty(
+    source: EnumProperty(
                     items=(("4", "Tetrahedron", ""),
                             ("6", "Hexahedron", ""),
                             ("8", "Octahedron", ""),
@@ -337,7 +337,7 @@ class Solids(bpy.types.Operator):
                     name="Source",
                     description="Starting point of your solid"
                     )
-    size = FloatProperty(
+    size: FloatProperty(
                     name="Size",
                     description="Radius of the sphere through the vertices",
                     min=0.01,
@@ -346,7 +346,7 @@ class Solids(bpy.types.Operator):
                     soft_max=100,
                     default=1.0
                     )
-    vTrunc = FloatProperty(
+    vTrunc: FloatProperty(
                     name="Vertex Truncation",
                     description="Amount of vertex truncation",
                     min=0.0,
@@ -357,7 +357,7 @@ class Solids(bpy.types.Operator):
                     precision=3,
                     step=0.5
                     )
-    eTrunc = FloatProperty(
+    eTrunc: FloatProperty(
                     name="Edge Truncation",
                     description="Amount of edge truncation",
                     min=0.0,
@@ -368,24 +368,24 @@ class Solids(bpy.types.Operator):
                     precision=3,
                     step=0.2
                     )
-    snub = EnumProperty(
+    snub: EnumProperty(
                     items=(("None", "No Snub", ""),
                            ("Left", "Left Snub", ""),
                            ("Right", "Right Snub", "")),
                     name="Snub",
                     description="Create the snub version"
                     )
-    dual = BoolProperty(
+    dual: BoolProperty(
                     name="Dual",
                     description="Create the dual of the current solid",
                     default=False
                     )
-    keepSize = BoolProperty(
+    keepSize: BoolProperty(
                     name="Keep Size",
                     description="Keep the whole solid at a constant size",
                     default=False
                     )
-    preset = EnumProperty(
+    preset: EnumProperty(
                     items=(("0", "Custom", ""),
                            ("t4", "Truncated Tetrahedron", ""),
                            ("r4", "Cuboctahedron", ""),
diff --git a/add_mesh_extra_objects/add_mesh_star.py b/add_mesh_extra_objects/add_mesh_star.py
index b7e420fe..411fa91d 100644
--- a/add_mesh_extra_objects/add_mesh_star.py
+++ b/add_mesh_extra_objects/add_mesh_star.py
@@ -148,28 +148,28 @@ class AddStar(bpy.types.Operator):
     bl_description = "Construct a star mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    points = IntProperty(
+    points: IntProperty(
         name="Points",
         description="Number of points for the star",
         min=2,
         max=256,
         default=5
         )
-    outer_radius = FloatProperty(
+    outer_radius: FloatProperty(
         name="Outer Radius",
         description="Outer radius of the star",
         min=0.01,
         max=9999.0,
         default=1.0
         )
-    innter_radius = FloatProperty(
+    innter_radius: FloatProperty(
         name="Inner Radius",
         description="Inner radius of the star",
         min=0.01,
         max=9999.0,
         default=0.5
         )
-    height = FloatProperty(name="Height",
+    height: FloatProperty(name="Height",
         description="Height of the star",
         min=0.01,
         max=9999.0,
diff --git a/add_mesh_extra_objects/add_mesh_supertoroid.py b/add_mesh_extra_objects/add_mesh_supertoroid.py
index 65533315..5836ed5e 100644
--- a/add_mesh_extra_objects/add_mesh_supertoroid.py
+++ b/add_mesh_extra_objects/add_mesh_supertoroid.py
@@ -142,48 +142,48 @@ class add_supertoroid(bpy.types.Operator):
     bl_description = "Construct a supertoroid mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    R = FloatProperty(
+    R: FloatProperty(
             name="Big radius",
             description="The radius inside the tube",
             default=1.0,
             min=0.01, max=100.0
             )
-    r = FloatProperty(
+    r: FloatProperty(
             name="Small radius",
             description="The radius of the tube",
             default=0.3,
             min=0.01, max=100.0
             )
-    u = IntProperty(
+    u: IntProperty(
             name="U-segments",
             description="Radial segmentation",
             default=16,
             min=3, max=265
             )
-    v = IntProperty(
+    v: IntProperty(
             name="V-segments",
             description="Lateral segmentation",
             default=8,
             min=3, max=265
             )
-    n1 = FloatProperty(
+    n1: FloatProperty(
             name="Ring manipulator",
             description="Manipulates the shape of the Ring",
             default=1.0,
             min=0.01, max=100.0
             )
-    n2 = FloatProperty(
+    n2: FloatProperty(
             name="Cross manipulator",
             description="Manipulates the shape of the cross-section",
             default=1.0,
             min=0.01, max=100.0
             )
-    ie = BoolProperty(
+    ie: BoolProperty(
             name="Use Int. and Ext. radii",
             description="Use internal and external radii",
             default=False
             )
-    edit = BoolProperty(
+    edit: BoolProperty(
             name="",
             description="",
             default=False,
diff --git a/add_mesh_extra_objects/add_mesh_teapot.py b/add_mesh_extra_objects/add_mesh_teapot.py
index 3f117d72..1dabc520 100644
--- a/add_mesh_extra_objects/add_mesh_teapot.py
+++ b/add_mesh_extra_objects/add_mesh_teapot.py
@@ -17,13 +17,13 @@ class AddTeapot(bpy.types.Operator):
     bl_description = "Construct a teapot or teaspoon mesh"
     bl_options = {"REGISTER", "UNDO"}
 
-    resolution = IntProperty(
+    resolution: IntProperty(
             name="Resolution",
             description="Resolution of the Teapot",
             default=5,
             min=2, max=15,
             )
-    objecttype = EnumProperty(
+    objecttype: EnumProperty(
             name="Object Type",
             description="Type of Bezier Object",
             items=(('1', "Teapot", "Construct a teapot mesh"),
diff --git a/add_mesh_extra_objects/add_mesh_torusknot.py b/add_mesh_extra_objects/add_mesh_torusknot.py
index 1cdac6b6..7004fab4 100644
--- a/add_mesh_extra_objects/add_mesh_torusknot.py
+++ b/add_mesh_extra_objects/add_mesh_torusknot.py
@@ -98,13 +98,13 @@ class AddTorusKnot(bpy.types.Operator):
     bl_description = "Construct a torus knot mesh"
     bl_options = {"REGISTER", "UNDO"}
 
-    resolution = IntProperty(
+    resolution: IntProperty(
         name="Resolution",
         description="Resolution of the Torus Knot",
         default=80,
         min=30, max=256
         )
-    objecttype = IntProperty(
+    objecttype: IntProperty(
         name="Knot Type",
         description="Type of Knot",
         default=1,
diff --git a/add_mesh_extra_objects/add_mesh_triangles.py b/add_mesh_extra_objects/add_mesh_triangles.py
index 2cccd0fb..8a662547 100644
--- a/add_mesh_extra_objects/add_mesh_triangles.py
+++ b/add_mesh_extra_objects/add_mesh_triangles.py
@@ -74,33 +74,33 @@ class MakeTriangle(Operator):
             ]
 
     # add definitions for some manipulation buttons
-    flipX = BoolProperty(
+    flipX: BoolProperty(
             name="Flip X sign",
             description="Draw on the other side of the X axis (Mirror on Y axis)",
             default=False
             )
-    flipY = BoolProperty(
+    flipY: BoolProperty(
             name="Flip Y sign",
             description="Draw on the other side of the Y axis (Mirror on X axis)",
             default=False
             )
-    scale = FloatProperty(
+    scale: FloatProperty(
             name="Scale",
             description="Triangle scale",
             default=1.0,
             min=1.0
             )
-    triangleType = EnumProperty(
+    triangleType: EnumProperty(
             items=triangleTypeList,
             name="Type",
             description="Triangle Type"
             )
-    triangleFace = EnumProperty(
+    triangleFace: EnumProperty(
             items=triangleFaceList,
             name="Face types",
             description="Triangle Face Types"
             )
-    at_3Dcursor = BoolProperty(
+    at_3Dcursor: BoolProperty(
             name="Use 3D Cursor",
             description="Draw the triangle where the 3D cursor is",
             default=False
diff --git a/add_mesh_extra_objects/add_mesh_twisted_torus.py b/add_mesh_extra_objects/add_mesh_twisted_torus.py
index f66324a4..17d3f1a9 100644
--- a/add_mesh_extra_objects/add_mesh_twisted_torus.py
+++ b/add_mesh_extra_objects/add_mesh_twisted_torus.py
@@ -139,7 +139,7 @@ class AddTwistedTorus(bpy.types.Operator):
     bl_description = "Construct a twisted torus mesh"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    major_radius = FloatProperty(
+    major_radius: FloatProperty(
         name="Major Radius",
         description="Radius from the origin to the"
                     " center of the cross section",
@@ -147,47 +147,47 @@ class AddTwistedTorus(bpy.types.Operator):
         max=100.0,
         default=1.0
         )
-    minor_radius = FloatProperty(
+    minor_radius: FloatProperty(
         name="Minor Radius",
         description="Radius of the torus' cross section",
         min=0.01,
         max=100.0,
         default=0.25
         )
-    major_segments = IntProperty(
+    major_segments: IntProperty(
         name="Major Segments",
         description="Number of segments for the main ring of the torus",
         min=3,
         max=256,
         default=48
         )
-    minor_segments = IntProperty(
+    minor_segments: IntProperty(
         name="Minor Segments",
         description="Number of segments for the minor ring of the torus",
         min=3,
         max=256,
         default=12
         )
-    twists = IntProperty(
+    twists: IntProperty(
         name="Twists",
         description="Number of twists of the torus",
         min=0,
         max=256,
         default=1
         )
-    use_abso = BoolProperty(
+    use_abso: BoolProperty(
         name="Use Int/Ext Controls",
         description="Use the Int/Ext controls for torus dimensions",
         default=False
         )
-    abso_major_rad = FloatProperty(
+    abso_major_rad: FloatProperty(
         name="Exterior Radius",
         description="Total Exterior Radius of the torus",
         min=0.01,
         max=100.0,
         default=1.0
         )
-    abso_minor_rad = FloatProperty(
+    abso_minor_rad: FloatProperty(
         name="Inside Radius",
         description="Total Interior Radius of the torus",
         min=0.01,
diff --git a/add_mesh_extra_objects/geodesic_domes/third_domes_panel_271.py b/add_mesh_extra_objects/geodesic_domes/third_domes_panel_271.py
index ab3b0e9b..e3ea4009 100644
--- a/add_mesh_extra_objects/geodesic_domes/third_domes_panel_271.py
+++ b/add_mesh_extra_objects/geodesic_domes/third_domes_panel_271.py
@@ -34,23 +34,23 @@ class GenerateGeodesicDome(Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # PKHG_NEW saving and loading parameters
-    save_parameters = BoolProperty(
+    save_parameters: BoolProperty(
             name="Save params",
             description="Activation save */tmp/GD_0.GD",
             default=False
             )
-    load_parameters = BoolProperty(
+    load_parameters: BoolProperty(
             name="Load params",
             description="Read */tmp/GD_0.GD",
             default=False
             )
-    gd_help_text_width = IntProperty(
+    gd_help_text_width: IntProperty(
             name="Text Width",
             description="The width above which the text wraps",
             default=60,
             max=180, min=20
             )
-    mainpages = EnumProperty(
+    mainpages: EnumProperty(
             name="Menu",
             description="Create Faces, Struts & Hubs",
             items=[("Main", "Main", "Geodesic objects"),
@@ -62,7 +62,7 @@ class GenerateGeodesicDome(Operator):
             default='Main'
             )
     # for Faces
-    facetype_menu = EnumProperty(
+    facetype_menu: EnumProperty(
             name="Faces",
             description="choose a facetype",
             items=[("0", "strip", "strip"),
@@ -79,43 +79,43 @@ class GenerateGeodesicDome(Operator):
                   ],
             default='0'
             )
-    facetoggle = BoolProperty(
+    facetoggle: BoolProperty(
             name="Activate: Face Object",
             description="Activate Faces for Geodesic object",
             default=False
             )
-    face_use_imported_object = BoolProperty(
+    face_use_imported_object: BoolProperty(
             name="Use: Imported Object",
             description="Activate faces on your Imported object",
             default=False
             )
-    facewidth = FloatProperty(
+    facewidth: FloatProperty(
             name="Face Width",
             min=-1, soft_min=0.001, max=4,
             default=.50
             )
-    fwtog = BoolProperty(
+    fwtog: BoolProperty(
             name="Width tweak",
             default=False
             )
-    faceheight = FloatProperty(
+    faceheight: FloatProperty(
             name="Face Height",
             min=0.001, max=4,
             default=1
             )
-    fhtog = BoolProperty(
+    fhtog: BoolProperty(
             name="Height tweak",
             default=False
             )
-    face_detach = BoolProperty(
+    face_detach: BoolProperty(
             name="Detach Faces",
             default=False
             )
-    fmeshname = StringProperty(
+    fmeshname: StringProperty(
             name="Face Mesh name",
             default="defaultface"
             )
-    geodesic_types = EnumProperty(
+    geodesic_types: EnumProperty(
             name="Objects",
             description="Choose Geodesic, Grid, Cylinder, Parabola, "
                         "Torus, Sphere, Import your mesh or Superparameters",
@@ -129,12 +129,12 @@ class GenerateGeodesicDome(Operator):
                   ],
             default='Geodesic'
             )
-    import_mesh_name = StringProperty(
+    import_mesh_name: StringProperty(
             name="Mesh to import",
             description="the name has to be the name of a meshobject",
             default="None"
             )
-    base_type = EnumProperty(
+    base_type: EnumProperty(
             name="Hedron",
             description="Choose between Tetrahedron, Octahedron, Icosahedron ",
             items=[("Tetrahedron", "Tetrahedron", "Generate Tetrahedron"),
@@ -143,7 +143,7 @@ class GenerateGeodesicDome(Operator):
                     ],
             default='Tetrahedron'
             )
-    orientation = EnumProperty(
+    orientation: EnumProperty(
             name="Point^",
             description="Point (Vert), Edge or Face pointing upwards",
             items=[("PointUp", "PointUp", "Point up"),
@@ -152,7 +152,7 @@ class GenerateGeodesicDome(Operator):
                    ],
             default='PointUp'
             )
-    geodesic_class = EnumProperty(
+    geodesic_class: EnumProperty(
             name="Class",
             description="Subdivide Basic/Triacon",
             items=[("Class 1", "Class 1", "class one"),
@@ -160,7 +160,7 @@ class GenerateGeodesicDome(Operator):
                    ],
             default='Class 1'
             )
-    tri_hex_star = EnumProperty(
+    tri_hex_star: EnumProperty(
             name="Shape",
             description="Choose between tri hex star face types",
             items=[("tri", "tri", "tri faces"),
@@ -169,7 +169,7 @@ class GenerateGeodesicDome(Operator):
                     ],
             default='tri'
             )
-    spherical_flat = EnumProperty(
+    spherical_flat: EnumProperty(
             name="Round",
             description="Choose between spherical or flat ",
             items=[("spherical", "spherical", "Generate spherical"),
@@ -177,280 +177,280 @@ class GenerateGeodesicDome(Operator):
                     ],
             default='spherical'
             )
-    use_imported_mesh = BoolProperty(
+    use_imported_mesh: BoolProperty(
             name="use import",
             description="Use an imported mesh",
             default=False
             )
     # Cylinder
-    cyxres = IntProperty(
+    cyxres: IntProperty(
             name="Resolution x/y",
             min=3, max=32,
             description="Number of faces around x/y",
             default=5
             )
-    cyyres = IntProperty(
+    cyyres: IntProperty(
             name="Resolution z",
             min=3, max=32,
             description="Number of faces in z direction",
             default=5
             )
-    cyxsz = FloatProperty(
+    cyxsz: FloatProperty(
             name="Scale x/y",
             min=0.01, max=10,
             description="Scale in x/y direction",
             default=1
             )
-    cyysz = FloatProperty(
+    cyysz: FloatProperty(
             name="Scale z",
             min=0.01, max=10,
             description="Scale in z direction",
             default=1
             )
-    cyxell = FloatProperty(
+    cyxell: FloatProperty(
             name="Stretch x",
             min=0.001, max=4,
             description="Stretch in x direction",
             default=1
             )
-    cygap = FloatProperty(
+    cygap: FloatProperty(
             name="Gap",
             min=-2, max=2,
             description="Shrink in % around radius",
             default=1
             )
-    cygphase = FloatProperty(
+    cygphase: FloatProperty(
             name="Phase", min=-4, max=4,
             description="Rotate around pivot x/y",
             default=0
             )
     # Parabola
-    paxres = IntProperty(
+    paxres: IntProperty(
             name="Resolution x/y",
             min=3, max=32,
             description="Number of faces around x/y",
             default=5
             )
-    payres = IntProperty(
+    payres: IntProperty(
             name="Resolution z",
             min=3, max=32,
             description="Number of faces in z direction",
             default=5
             )
-    paxsz = FloatProperty(
+    paxsz: FloatProperty(
             name="Scale x/y",
             min=0.001, max=10,
             description="scale in x/y direction",
             default=0.30
             )
-    paysz = FloatProperty(
+    paysz: FloatProperty(
             name="Scale z",
             min=0.001, max=10,
             description="Scale in z direction",
             default=1
             )
-    paxell = FloatProperty(
+    paxell: FloatProperty(
             name="Stretch x",
             min=0.001, max=4,
             description="Stretch in x direction",
             default=1
             )
-    pagap = FloatProperty(
+    pagap: FloatProperty(
             name="Gap",
             min=-2, max=2,
             description="Shrink in % around radius",
             default=1
             )
-    pagphase = FloatProperty(
+    pagphase: FloatProperty(
             name="Phase",
             min=-4, max=4,
             description="Rotate around pivot x/y",
             default=0
             )
     # Torus
-    ures = IntProperty(
+    ures: IntProperty(
             name="Resolution x/y",
             min=3, max=32,
             description="Number of faces around x/y",
             default=8)
-    vres = IntProperty(
+    vres: IntProperty(
             name="Resolution z",
             min=3, max=32,
             description="Number of faces in z direction",
             default=8)
-    urad = FloatProperty(
+    urad: FloatProperty(
             name="Radius x/y",
             min=0.001, max=10,
             description="Radius in x/y plane",
             default=1
             )
-    vrad = FloatProperty(
+    vrad: FloatProperty(
             name="Radius z",
             min=0.001, max=10,
             description="Radius in z plane",
             default=0.250
             )
-    uellipse = FloatProperty(
+    uellipse: FloatProperty(
             name="Stretch x",
             min=0.001, max=10,
             description="Number of faces in z direction",
             default=1
             )
-    vellipse = FloatProperty(
+    vellipse: FloatProperty(
             name="Stretch z",
             min=0.001, max=10,
             description="Number of faces in z direction",
             default=1
             )
-    upart = FloatProperty(
+    upart: FloatProperty(
             name="Gap x/y",
             min=-4, max=4,
             description="Shrink faces around x/y",
             default=1
             )
-    vpart = FloatProperty(
+    vpart: FloatProperty(
             name="Gap z",
             min=-4, max=4,
             description="Shrink faces in z direction",
             default=1
             )
-    ugap = FloatProperty(
+    ugap: FloatProperty(
             name="Phase x/y",
             min=-4, max=4,
             description="Rotate around pivot x/y",
             default=0
             )
-    vgap = FloatProperty(
+    vgap: FloatProperty(
             name="Phase z",
             min=-4, max=4,
             description="Rotate around pivot z",
             default=0
             )
-    uphase = FloatProperty(
+    uphase: FloatProperty(
             name="uphase",
             min=-4, max=4,
             description="Number of faces in z direction",
             default=0
             )
-    vphase = FloatProperty(
+    vphase: FloatProperty(
             name="vphase",
             min=-4, max=4,
             description="Number of faces in z direction",
             default=0
             )
-    uexp = FloatProperty(
+    uexp: FloatProperty(
             name="uexp",
             min=-4, max=4,
             description="Number of faces in z direction",
             default=0
             )
-    vexp = FloatProperty(
+    vexp: FloatProperty(
             name="vexp",
             min=-4, max=4,
             description="Number of faces in z direction",
             default=0
             )
-    usuper = FloatProperty(
+    usuper: FloatProperty(
             name="usuper",
             min=-4, max=4,
             description="First set of superform parameters",
             default=2
             )
-    vsuper = FloatProperty(
+    vsuper: FloatProperty(
             name="vsuper",
             min=-4, max=4,
             description="Second set of superform parameters",
             default=2
             )
-    utwist = FloatProperty(
+    utwist: FloatProperty(
             name="Twist x/y",
             min=-4, max=4,
             description="Use with superformular u",
             default=0
              )
-    vtwist = FloatProperty(
+    vtwist: FloatProperty(
             name="Twist z",
             min=-4, max=4,
             description="Use with superformular v",
             default=0
             )
     # Sphere
-    bures = IntProperty(
+    bures: IntProperty(
             name="Resolution x/y",
             min=3, max=32,
             description="Number of faces around x/y",
             default=8
             )
-    bvres = IntProperty(
+    bvres: IntProperty(
             name="Resolution z",
             min=3, max=32,
             description="Number of faces in z direction",
             default=8
             )
-    burad = FloatProperty(
+    burad: FloatProperty(
             name="Radius",
             min=-4, max=4,
             description="overall radius",
             default=1
             )
-    bupart = FloatProperty(
+    bupart: FloatProperty(
             name="Gap x/y",
             min=-4, max=4,
             description="Shrink faces around x/y",
             default=1
             )
-    bvpart = FloatProperty(
+    bvpart: FloatProperty(
             name="Gap z",
             min=-4, max=4,
             description="Shrink faces in z direction",
             default=1
             )
-    buphase = FloatProperty(
+    buphase: FloatProperty(
             name="Phase x/y",
             min=-4, max=4,
             description="Rotate around pivot x/y",
             default=0
             )
-    bvphase = FloatProperty(
+    bvphase: FloatProperty(
             name="Phase z",
             min=-4, max=4,
             description="Rotate around pivot z",
             default=0
             )
-    buellipse = FloatProperty(
+    buellipse: FloatProperty(
             name="Stretch x",
             min=0.001, max=4,
             description="Stretch in the x direction",
             default=1
             )
-    bvellipse = FloatProperty(
+    bvellipse: FloatProperty(
             name="Stretch z",
             min=0.001, max=4,
             description="Stretch in the z direction",
             default=1
             )
     # Grid
-    grxres = IntProperty(
+    grxres: IntProperty(
             name="Resolution x",
             min=2, soft_max=10, max=20,
             description="Number of faces in x direction",
             default=5
             )
-    gryres = IntProperty(
+    gryres: IntProperty(
             name="Resolution z",
             min=2, soft_min=2,
             soft_max=10, max=20,
             description="Number of faces in x direction",
             default=2
             )
-    grxsz = FloatProperty(
+    grxsz: FloatProperty(
             name="X size",
             min=1, soft_min=0.01,
             soft_max=5, max=10,
             description="X size",
             default=2.0
             )
-    grysz = FloatProperty(
+    grysz: FloatProperty(
             name="Y size",
             min=1, soft_min=0.01,
             soft_max=5, max=10,
@@ -459,66 +459,66 @@ class GenerateGeodesicDome(Operator):
             )
 
     # PKHG_TODO_??? what means cart
-    cart = IntProperty(
+    cart: IntProperty(
             name="cart",
             min=0, max=2,
             default=0
             )
-    frequency = IntProperty(
+    frequency: IntProperty(
             name="Frequency",
             min=1, max=8,
             description="Subdivide base triangles",
             default=1
             )
-    eccentricity = FloatProperty(
+    eccentricity: FloatProperty(
             name="Eccentricity",
             min=0.01, max=4,
             description="Scaling in x/y dimension",
             default=1
             )
-    squish = FloatProperty(
+    squish: FloatProperty(
             name="Squish",
             min=0.01,
             soft_max=4, max=10,
             description="Scaling in z dimension",
             default=1
             )
-    radius = FloatProperty(
+    radius: FloatProperty(
             name="Radius",
             min=0.01,
             soft_max=4, max=10,
             description="Overall radius",
             default=1
             )
-    squareness = FloatProperty(
+    squareness: FloatProperty(
             name="Square x/y",
             min=0.1, max=5,
             description="Superelipse action in x/y",
             default=2
             )
-    squarez = FloatProperty(
+    squarez: FloatProperty(
             name="Square z",
             min=0.1, soft_max=5, max=10,
             description="Superelipse action in z",
             default=2
             )
-    baselevel = IntProperty(
+    baselevel: IntProperty(
             name="baselevel",
             default=5
             )
-    dual = BoolProperty(
+    dual: BoolProperty(
             name="Dual",
             description="Faces become verts, "
                         "verts become faces, edges flip",
             default=False
             )
-    rotxy = FloatProperty(
+    rotxy: FloatProperty(
             name="Rotate x/y",
             min=-4, max=4,
             description="Rotate superelipse action in x/y",
             default=0
             )
-    rotz = FloatProperty(
+    rotz: FloatProperty(
             name="Rotate z",
             min=-4, max=4,
             description="Rotate superelipse action in z",
@@ -526,94 +526,94 @@ class GenerateGeodesicDome(Operator):
             )
 
     # for choice of superformula
-    uact = BoolProperty(
+    uact: BoolProperty(
             name="Superformula u (x/y)",
             description="Activate superformula u parameters",
             default=False
             )
-    vact = BoolProperty(
+    vact: BoolProperty(
             name="Superformula v (z)",
             description="Activate superformula v parameters",
             default=False
             )
-    um = FloatProperty(
+    um: FloatProperty(
             name="Pinch x/y",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Pinch the mesh on x/y",
             default=3
             )
-    un1 = FloatProperty(
+    un1: FloatProperty(
             name="Squash x/y",
             min=0, soft_min=0.1,
             soft_max=5, max=20,
             description="Squash the mesh x/y",
             default=1
             )
-    un2 = FloatProperty(
+    un2: FloatProperty(
             name="Inflate x/y",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Inflate the mesh x/y",
             default=1
             )
-    un3 = FloatProperty(
+    un3: FloatProperty(
             name="Roundify x/y",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Roundify x/y",
             default=1
             )
-    ua = FloatProperty(
+    ua: FloatProperty(
             name="Shrink",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Shrink",
             default=1.0
             )
-    ub = FloatProperty(
+    ub: FloatProperty(
             name="Shrink x/y",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Shrink y/x",
             default=4.0
             )
-    vm = FloatProperty(
+    vm: FloatProperty(
             name="Scale Z Base",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Scale Z Base",
             default=1
             )
-    vn1 = FloatProperty(
+    vn1: FloatProperty(
             name="Scale lock Top Z",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Scale lock Top Z",
             default=1
             )
-    vn2 = FloatProperty(
+    vn2: FloatProperty(
             name="Inflate Base",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Inflate Base",
             default=1
             )
-    vn3 = FloatProperty(
+    vn3: FloatProperty(
             name="Inflate",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Inflate",
             default=1
             )
-    va = FloatProperty(
+    va: FloatProperty(
             name="Scale 1",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="Scale 1",
             default=1
             )
-    vb = FloatProperty(
+    vb: FloatProperty(
             name="Scale 2",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
@@ -621,28 +621,28 @@ class GenerateGeodesicDome(Operator):
             default=1
             )
 
-    uturn = FloatProperty(
+    uturn: FloatProperty(
             name="x/y Vert cycle",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="x/y Vert cycle",
             default=0
             )
-    vturn = FloatProperty(
+    vturn: FloatProperty(
             name="z Vert cycle",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="z Vert cycle",
             default=0
             )
-    utwist = FloatProperty(
+    utwist: FloatProperty(
             name="x/y Twist cycle",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
             description="x/y Twist cycle",
             default=0
             )
-    vtwist = FloatProperty(
+    vtwist: FloatProperty(
             name="z Twist cycle",
             min=0, soft_min=0.1,
             soft_max=5, max=10,
@@ -650,113 +650,113 @@ class GenerateGeodesicDome(Operator):
             default=0
             )
     # Strut
-    struttype = IntProperty(
+    struttype: IntProperty(
             name="Strut type",
             default=0
             )
-    struttoggle = BoolProperty(
+    struttoggle: BoolProperty(
             name="Use Struts",
             default=False
             )
-    strutimporttoggle = BoolProperty(
+    strutimporttoggle: BoolProperty(
             name="Strut import toggle",
             default=False
             )
-    strutimpmesh = StringProperty(
+    strutimpmesh: StringProperty(
             name="Strut import mesh",
             default="None"
             )
-    strutwidth = FloatProperty(
+    strutwidth: FloatProperty(
             name="Strut width",
             min=-10, soft_min=5,
             soft_max=5, max=10,
             default=1
             )
-    swtog = BoolProperty(
+    swtog: BoolProperty(
             name="Width enable",
             default=False
             )
-    strutheight = FloatProperty(
+    strutheight: FloatProperty(
             name="Strut height",
             min=-5, soft_min=-1,
             soft_max=5, max=10,
             default=1
             )
-    shtog = BoolProperty(
+    shtog: BoolProperty(
             name="Height tweak",
             default=False
             )
-    strutshrink = FloatProperty(
+    strutshrink: FloatProperty(
             name="Strut shrink",
             min=0.001, max=4,
             default=1
             )
-    sstog = BoolProperty(
+    sstog: BoolProperty(
             name="Shrink tweak",
             default=False
             )
-    stretch = FloatProperty(
+    stretch: FloatProperty(
             name="Stretch",
             min=-4, max=4,
             default=1.0
             )
-    lift = FloatProperty(
+    lift: FloatProperty(
             name="Lift",
             min=0.001, max=10,
             default=0
             )
-    smeshname = StringProperty(
+    smeshname: StringProperty(
             name="Strut mesh name",
             default="defaultstrut"
             )
     # Hubs
-    hubtype = BoolProperty(
+    hubtype: BoolProperty(
             name="Hub type",
             description="not used",
             default=True
             )
-    hubtoggle = BoolProperty(
+    hubtoggle: BoolProperty(
             name="Use Hubs",
             default=False
             )
-    hubimporttoggle = BoolProperty(
+    hubimporttoggle: BoolProperty(
             name="New import",
             description="Import a mesh",
             default=False
             )
-    hubimpmesh = StringProperty(
+    hubimpmesh: StringProperty(
             name="Hub mesh import",
             description="Name of mesh to import",
             default="None"
             )
-    hubwidth = FloatProperty(
+    hubwidth: FloatProperty(
             name="Hub width",
             min=0.01, max=10,
             default=1
             )
-    hwtog = BoolProperty(
+    hwtog: BoolProperty(
             name="Width tweak",
             default=False
             )
-    hubheight = FloatProperty(
+    hubheight: FloatProperty(
             name="Hub height",
             min=0.01, max=10,
             default=1
             )
-    hhtog = BoolProperty(
+    hhtog: BoolProperty(
             name="Height tweak",
             default=False
             )
-    hublength = FloatProperty(
+    hublength: FloatProperty(
             name="Hub length",
             min=0.1, max=10,
             default=1
             )
-    hstog = BoolProperty(
+    hstog: BoolProperty(
             name="Hub s tweak",
             default=False
             )
-    hmeshname = StringProperty(
+    hmeshname: StringProperty(
             name="Hub mesh name",
             description="Name of an existing mesh needed!",
             default="None"
diff --git a/add_mesh_extra_objects/mesh_discombobulator.py b/add_mesh_extra_objects/mesh_discombobulator.py
index bc0bfe67..f168e32b 100644
--- a/add_mesh_extra_objects/mesh_discombobulator.py
+++ b/add_mesh_extra_objects/mesh_discombobulator.py
@@ -577,7 +577,7 @@ class unchooseDoodad(Operator):
     bl_description = "Remove the saved Doodad Object(s)"
     bl_options = {'REGISTER'}
 
-    remove_all = bpy.props.BoolProperty(
+    remove_all: bpy.props.BoolProperty(
                         name="Remove all Doodads",
                         default=False,
                         )
diff --git a/animation_animall.py b/animation_animall.py
index d0a0374f..838a4832 100644
--- a/animation_animall.py
+++ b/animation_animall.py
@@ -518,7 +518,7 @@ class AnimallAddonPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Animation",
diff --git a/ant_landscape/__init__.py b/ant_landscape/__init__.py
index b9888d52..f9668369 100644
--- a/ant_landscape/__init__.py
+++ b/ant_landscape/__init__.py
@@ -866,7 +866,7 @@ class AntLandscapePropertiesGroup(bpy.types.PropertyGroup):
             name="Vertex Group",
             default=""
             )
-    strata = FloatProperty(
+    strata: FloatProperty(
             name="Amount",
             default=5.0,
             min=0.01,
diff --git a/archimesh/__init__.py b/archimesh/__init__.py
index 0208b944..bb8f1da2 100644
--- a/archimesh/__init__.py
+++ b/archimesh/__init__.py
@@ -170,7 +170,7 @@ class Archi_Pref(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Create",
diff --git a/archimesh/achm_books_maker.py b/archimesh/achm_books_maker.py
index 1c78f8b7..f7fa58ee 100644
--- a/archimesh/achm_books_maker.py
+++ b/archimesh/achm_books_maker.py
@@ -45,52 +45,52 @@ class AchmBooks(Operator):
     bl_category = 'Archimesh'
     bl_options = {'REGISTER', 'UNDO'}
 
-    width = FloatProperty(
+    width: FloatProperty(
             name='Width', min=0.001, max=1, default=0.045, precision=3,
             description='Bounding book width',
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Depth', min=0.001, max=1, default=0.22, precision=3,
             description='Bounding book depth',
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name='Height', min=0.001, max=1, default=0.30, precision=3,
             description='Bounding book height',
             )
-    num = IntProperty(
+    num: IntProperty(
             name='Number of books', min=1, max=100, default=20,
             description='Number total of books',
             )
 
-    rX = FloatProperty(
+    rX: FloatProperty(
             name='X', min=0.000, max=0.999, default=0, precision=3,
             description='Randomness for X axis',
             )
-    rY = FloatProperty(
+    rY: FloatProperty(
             name='Y', min=0.000, max=0.999, default=0, precision=3,
             description='Randomness for Y axis',
             )
-    rZ = FloatProperty(
+    rZ: FloatProperty(
             name='Z', min=0.000, max=0.999, default=0, precision=3,
             description='Randomness for Z axis',
             )
 
-    rot = FloatProperty(
+    rot: FloatProperty(
             name='Rotation', min=0.000, max=1, default=0, precision=3,
             description='Randomness for vertical position (0-> All straight)',
             )
-    afn = IntProperty(
+    afn: IntProperty(
             name='Affinity', min=0, max=10, default=5,
             description='Number of books with same rotation angle',
             )
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             )
-    objcol = FloatVectorProperty(
+    objcol: FloatVectorProperty(
             name="Color",
             description="Color for material",
             default=(1.0, 1.0, 1.0, 1.0),
@@ -98,7 +98,7 @@ class AchmBooks(Operator):
             subtype='COLOR',
             size=4,
             )
-    rC = FloatProperty(
+    rC: FloatProperty(
             name='Randomness',
             min=0.000, max=1, default=0, precision=3,
             description='Randomness for color ',
diff --git a/archimesh/achm_column_maker.py b/archimesh/achm_column_maker.py
index 6bae7efa..e9b66639 100644
--- a/archimesh/achm_column_maker.py
+++ b/archimesh/achm_column_maker.py
@@ -41,7 +41,7 @@ class AchmColumn(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # Define properties
-    model = bpy.props.EnumProperty(
+    model: bpy.props.EnumProperty(
             name="Model",
             items=(
                 ('1', "Circular", ""),
@@ -49,185 +49,185 @@ class AchmColumn(bpy.types.Operator):
                 ),
             description="Type of column",
             )
-    keep_size = bpy.props.BoolProperty(
+    keep_size: bpy.props.BoolProperty(
             name="Keep radius equal",
             description="Keep all radius (top, mid and bottom) to the same size",
             default=True,
             )
 
-    rad_top = bpy.props.FloatProperty(
+    rad_top: bpy.props.FloatProperty(
             name='Top radius',
             min=0.001, max=10, default=0.15, precision=3,
             description='Radius of the column in the top',
             )
-    rad_mid = bpy.props.FloatProperty(
+    rad_mid: bpy.props.FloatProperty(
             name='Middle radius',
             min=0.001, max=10, default=0.15, precision=3,
             description='Radius of the column in the middle',
             )
-    shift = bpy.props.FloatProperty(
+    shift: bpy.props.FloatProperty(
             name='',
             min=-1, max=1, default=0, precision=3,
             description='Middle displacement',
             )
 
-    rad_bottom = bpy.props.FloatProperty(
+    rad_bottom: bpy.props.FloatProperty(
             name='Bottom radius',
             min=0.001, max=10, default=0.15, precision=3,
             description='Radius of the column in the bottom',
             )
 
-    col_height = bpy.props.FloatProperty(
+    col_height: bpy.props.FloatProperty(
             name='Total height',
             min=0.001, max=10, default=2.4, precision=3,
             description='Total height of column, including bases and tops',
             )
-    col_sx = bpy.props.FloatProperty(
+    col_sx: bpy.props.FloatProperty(
             name='X size',
             min=0.001, max=10, default=0.30, precision=3,
             description='Column size for x axis',
             )
-    col_sy = bpy.props.FloatProperty(
+    col_sy: bpy.props.FloatProperty(
             name='Y size',
             min=0.001, max=10, default=0.30, precision=3,
             description='Column size for y axis',
             )
 
-    cir_base = bpy.props.BoolProperty(
+    cir_base: bpy.props.BoolProperty(
             name="Include circular base",
             description="Include a base with circular form",
             default=False,
             )
-    cir_base_r = bpy.props.FloatProperty(
+    cir_base_r: bpy.props.FloatProperty(
             name='Radio',
             min=0.001, max=10, default=0.08, precision=3,
             description='Rise up radio of base',
             )
-    cir_base_z = bpy.props.FloatProperty(
+    cir_base_z: bpy.props.FloatProperty(
             name='Height',
             min=0.001, max=10, default=0.05, precision=3,
             description='Size for z axis',
             )
 
-    cir_top = bpy.props.BoolProperty(
+    cir_top: bpy.props.BoolProperty(
             name="Include circular top",
             description="Include a top with circular form",
             default=False,
             )
-    cir_top_r = bpy.props.FloatProperty(
+    cir_top_r: bpy.props.FloatProperty(
             name='Radio',
             min=0.001, max=10, default=0.08, precision=3,
             description='Rise up radio of top',
             )
-    cir_top_z = bpy.props.FloatProperty(
+    cir_top_z: bpy.props.FloatProperty(
             name='Height',
             min=0.001, max=10, default=0.05, precision=3,
             description='Size for z axis',
             )
 
-    box_base = bpy.props.BoolProperty(
+    box_base: bpy.props.BoolProperty(
             name="Include rectangular base",
             description="Include a base with rectangular form",
             default=True,
             )
-    box_base_x = bpy.props.FloatProperty(
+    box_base_x: bpy.props.FloatProperty(
             name='X size',
             min=0.001, max=10, default=0.40, precision=3,
             description='Size for x axis',
             )
-    box_base_y = bpy.props.FloatProperty(
+    box_base_y: bpy.props.FloatProperty(
             name='Y size',
             min=0.001, max=10, default=0.40, precision=3,
             description='Size for y axis',
             )
-    box_base_z = bpy.props.FloatProperty(
+    box_base_z: bpy.props.FloatProperty(
             name='Height',
             min=0.001, max=10, default=0.05, precision=3,
             description='Size for z axis',
             )
 
-    box_top = bpy.props.BoolProperty(
+    box_top: bpy.props.BoolProperty(
             name="Include rectangular top",
             description="Include a top with rectangular form",
             default=True,
             )
-    box_top_x = bpy.props.FloatProperty(
+    box_top_x: bpy.props.FloatProperty(
             name='X size',
             min=0.001, max=10, default=0.40, precision=3,
             description='Size for x axis',
             )
-    box_top_y = bpy.props.FloatProperty(
+    box_top_y: bpy.props.FloatProperty(
             name='Y size',
             min=0.001, max=10, default=0.40, precision=3,
             description='Size for y axis',
             )
-    box_top_z = bpy.props.FloatProperty(
+    box_top_z: bpy.props.FloatProperty(
             name='Height',
             min=0.001, max=10, default=0.05, precision=3,
             description='Size for z axis',
             )
 
-    arc_top = bpy.props.BoolProperty(
+    arc_top: bpy.props.BoolProperty(
             name="Create top arch",
             description="Include an arch in the top of the column",
             default=False,
             )
-    arc_radio = bpy.props.FloatProperty(
+    arc_radio: bpy.props.FloatProperty(
             name='Arc Radio',
             min=0.001, max=10, default=1, precision=1,
             description='Radio of the arch',
             )
-    arc_width = bpy.props.FloatProperty(
+    arc_width: bpy.props.FloatProperty(
             name='Thickness',
             min=0.01, max=10, default=0.15, precision=2,
             description='Thickness of the arch wall',
             )
-    arc_gap = bpy.props.FloatProperty(
+    arc_gap: bpy.props.FloatProperty(
             name='Arc gap',
             min=0.01, max=10, default=0.25, precision=2,
             description='Size of the gap in the arch sides',
             )
 
-    crt_mat = bpy.props.BoolProperty(
+    crt_mat: bpy.props.BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             )
-    crt_array = bpy.props.BoolProperty(
+    crt_array: bpy.props.BoolProperty(
             name="Create array of elements",
             description="Create a modifier array for all elemnst",
             default=False,
             )
-    array_num_x = bpy.props.IntProperty(
+    array_num_x: bpy.props.IntProperty(
             name='Count X',
             min=0, max=100, default=3,
             description='Number of elements in array',
             )
-    array_space_x = bpy.props.FloatProperty(
+    array_space_x: bpy.props.FloatProperty(
             name='Distance X',
             min=0.000, max=10, default=1, precision=3,
             description='Distance between elements (only arc disabled)',
             )
-    array_num_y = bpy.props.IntProperty(
+    array_num_y: bpy.props.IntProperty(
             name='Count Y',
             min=0, max=100, default=0,
             description='Number of elements in array',
             )
-    array_space_y = bpy.props.FloatProperty(
+    array_space_y: bpy.props.FloatProperty(
             name='Distance Y',
             min=0.000, max=10, default=1, precision=3,
             description='Distance between elements (only arc disabled)',
             )
-    array_space_z = bpy.props.FloatProperty(
+    array_space_z: bpy.props.FloatProperty(
             name='Distance Z',
             min=-10, max=10, default=0, precision=3,
             description='Combined X/Z distance between elements (only arc disabled)',
             )
-    ramp = bpy.props.BoolProperty(
+    ramp: bpy.props.BoolProperty(
             name="Deform",
             description="Deform top base with Z displacement", default=True,
             )
-    array_space_factor = bpy.props.FloatProperty(
+    array_space_factor: bpy.props.FloatProperty(
             name='Move Y center',
             min=0.00, max=1, default=0.0, precision=3,
             description='Move the center of the arch in Y axis. (0 centered)',
diff --git a/archimesh/achm_curtain_maker.py b/archimesh/achm_curtain_maker.py
index cc63c3af..0b4bb84b 100644
--- a/archimesh/achm_curtain_maker.py
+++ b/archimesh/achm_curtain_maker.py
@@ -42,55 +42,55 @@ class AchmJapan(Operator):
     bl_category = 'Archimesh'
     bl_options = {'REGISTER', 'UNDO'}
 
-    width = bpy.props.FloatProperty(
+    width: bpy.props.FloatProperty(
             name='Width',
             min=0.30, max=4, default=1, precision=3,
             description='Total width',
             )
-    height = bpy.props.FloatProperty(
+    height: bpy.props.FloatProperty(
             name='Height',
             min=0.20, max=50, default=1.8, precision=3,
             description='Total height',
             )
-    num = bpy.props.IntProperty(
+    num: bpy.props.IntProperty(
             name='Rails',
             min=2, max=5, default=2,
             description='Number total of rails',
             )
-    palnum = bpy.props.IntProperty(
+    palnum: bpy.props.IntProperty(
             name='Panels',
             min=1, max=2, default=1,
             description='Panels by rail',
             )
 
-    open01 = bpy.props.FloatProperty(
+    open01: bpy.props.FloatProperty(
             name='Position 01',
             min=0, max=1, default=0, precision=3,
             description='Position of the panel',
             )
-    open02 = bpy.props.FloatProperty(
+    open02: bpy.props.FloatProperty(
             name='Position 02',
             min=0, max=1, default=0, precision=3,
             description='Position of the panel',
             )
-    open03 = bpy.props.FloatProperty(
+    open03: bpy.props.FloatProperty(
             name='Position 03',
             min=0, max=1, default=0, precision=3,
             description='Position of the panel',
             )
-    open04 = bpy.props.FloatProperty(
+    open04: bpy.props.FloatProperty(
             name='Position 04',
             min=0, max=1, default=0, precision=3,
             description='Position of the panel',
             )
-    open05 = bpy.props.FloatProperty(
+    open05: bpy.props.FloatProperty(
             name='Position 05',
             min=0, max=1, default=0, precision=3,
             description='Position of the panel',
             )
 
     # Materials
-    crt_mat = bpy.props.BoolProperty(
+    crt_mat: bpy.props.BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
@@ -183,19 +183,19 @@ class AchmRoller(Operator):
     bl_category = 'Archimesh'
     bl_options = {'REGISTER', 'UNDO'}
 
-    width = bpy.props.FloatProperty(
+    width: bpy.props.FloatProperty(
             name='Width',
             min=0.30, max=4, default=1, precision=3,
             description='Total width',
             )
-    height = bpy.props.FloatProperty(
+    height: bpy.props.FloatProperty(
             name='Height',
             min=0.01, max=50, default=1.7, precision=3,
             description='Total height',
             )
 
     # Materials
-    crt_mat = bpy.props.BoolProperty(
+    crt_mat: bpy.props.BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
diff --git a/archimesh/achm_door_maker.py b/archimesh/achm_door_maker.py
index 4ef99373..baf3ac98 100644
--- a/archimesh/achm_door_maker.py
+++ b/archimesh/achm_door_maker.py
@@ -281,49 +281,49 @@ def shape_children(mainobject, update=False):
 # Define property group class to create or modify
 # ------------------------------------------------------------------
 class ObjectProperties(PropertyGroup):
-    frame_width = FloatProperty(
+    frame_width: FloatProperty(
             name='Frame width',
             min=0.25, max=10,
             default=1, precision=2,
             description='Doorframe width', update=update_object,
             )
-    frame_height = FloatProperty(
+    frame_height: FloatProperty(
             name='Frame height',
             min=0.25, max=10,
             default=2.1, precision=2,
             description='Doorframe height', update=update_object,
             )
-    frame_thick = FloatProperty(
+    frame_thick: FloatProperty(
             name='Frame thickness',
             min=0.05, max=0.50,
             default=0.08, precision=2,
             description='Doorframe thickness', update=update_object,
             )
-    frame_size = FloatProperty(
+    frame_size: FloatProperty(
             name='Frame size',
             min=0.05, max=0.25,
             default=0.08, precision=2,
             description='Doorframe size', update=update_object,
             )
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             update=update_object,
             )
-    factor = FloatProperty(
+    factor: FloatProperty(
             name='',
             min=0.2, max=1,
             default=0.5, precision=3, description='Door ratio',
             update=update_object,
             )
-    r = FloatProperty(
+    r: FloatProperty(
             name='Rotation', min=0, max=360,
             default=0, precision=1,
             description='Door rotation', update=update_object,
             )
 
-    openside = EnumProperty(
+    openside: EnumProperty(
             name="Open side",
             items=(
                 ('1', "Right open", ""),
@@ -334,7 +334,7 @@ class ObjectProperties(PropertyGroup):
             update=update_object,
             )
 
-    model = EnumProperty(
+    model: EnumProperty(
             name="Model",
             items=(
                 ('1', "Model 01", ""),
@@ -348,7 +348,7 @@ class ObjectProperties(PropertyGroup):
             update=update_object,
             )
 
-    handle = EnumProperty(
+    handle: EnumProperty(
             name="Handle",
             items=(
                 ('1', "Handle 01", ""),
@@ -362,27 +362,27 @@ class ObjectProperties(PropertyGroup):
             )
 
     # opengl internal data
-    glpoint_a = FloatVectorProperty(
+    glpoint_a: FloatVectorProperty(
             name="glpointa",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_b = FloatVectorProperty(
+    glpoint_b: FloatVectorProperty(
             name="glpointb",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_c = FloatVectorProperty(
+    glpoint_c: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_d = FloatVectorProperty(
+    glpoint_d: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_e = FloatVectorProperty(
+    glpoint_e: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
diff --git a/archimesh/achm_kitchen_maker.py b/archimesh/achm_kitchen_maker.py
index f9d98180..994714b1 100644
--- a/archimesh/achm_kitchen_maker.py
+++ b/archimesh/achm_kitchen_maker.py
@@ -54,12 +54,12 @@ class AchmExportInventory(Operator, ExportHelper):
 
     # From ExportHelper. Filter filenames.
     filename_ext = ".txt"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.txt",
             options={'HIDDEN'},
             )
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="File Path",
             description="File path used for exporting room data file",
             maxlen=1024, default="",
@@ -251,35 +251,35 @@ def getinventory():
 # ------------------------------------------------------------------
 class CabinetProperties(PropertyGroup):
     # Cabinet width
-    sX = FloatProperty(
+    sX: FloatProperty(
             name='width', min=0.001, max=10, default=0.60, precision=3,
             description='Cabinet width',
             )
-    wY = FloatProperty(
+    wY: FloatProperty(
             name='', min=-10, max=10, default=0, precision=3,
             description='Modify depth size',
             )
-    wZ = FloatProperty(
+    wZ: FloatProperty(
             name='', min=-10, max=10, default=0, precision=3,
             description='Modify height size',
             )
 
     # Cabinet position shift
-    pX = FloatProperty(
+    pX: FloatProperty(
             name='', min=-10, max=10, default=0, precision=3,
             description='Position x shift',
             )
-    pY = FloatProperty(
+    pY: FloatProperty(
             name='', min=-10, max=10, default=0, precision=3,
             description='Position y shift',
             )
-    pZ = FloatProperty(
+    pZ: FloatProperty(
             name='', min=-10, max=10, default=0, precision=3,
             description='Position z shift',
             )
 
     # Door type
-    dType = EnumProperty(
+    dType: EnumProperty(
             items=(
                 ('1', "Single R", ""),
                 ('2', "Single L", ""),
@@ -298,47 +298,47 @@ class CabinetProperties(PropertyGroup):
             )
 
     # Shelves
-    sNum = IntProperty(
+    sNum: IntProperty(
             name='Shelves', min=0, max=10, default=1,
             description='Number total of shelves',
             )
     # Drawers
-    dNum = IntProperty(
+    dNum: IntProperty(
             name='Num', min=1, max=10, default=3,
             description='Number total of drawers',
             )
     # Glass Factor
-    gF = FloatProperty(
+    gF: FloatProperty(
             name='', min=0.001, max=1, default=0.1, precision=3,
             description='Glass ratio',
             )
     # Handle flag
-    hand = BoolProperty(
+    hand: BoolProperty(
             name="Handle",
             description="Create a handle", default=True,
             )
     # Left baseboard
-    bL = BoolProperty(
+    bL: BoolProperty(
             name="Left Baseboard",
             description="Create a left baseboard", default=False,
             )
     # Right baseboard
-    bR = BoolProperty(
+    bR: BoolProperty(
             name="Right Baseboard",
             description="Create a left baseboard", default=False,
             )
     # Fill countertop spaces
-    tC = BoolProperty(
+    tC: BoolProperty(
             name="Countertop fill",
             description="Fill empty spaces with countertop", default=True,
             )
     # Add countertop edge
-    tE = BoolProperty(
+    tE: BoolProperty(
             name="Countertop edge",
             description="Add edge to countertop", default=True,
             )
     # cabinet rotation
-    rotate = EnumProperty(
+    rotate: EnumProperty(
             items=(
                 ('9', "Default", ""),
                 ('1', "90 CW", ""),
@@ -365,7 +365,7 @@ class AchmKitchen(Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # Define properties
-    type_cabinet = EnumProperty(
+    type_cabinet: EnumProperty(
             items=(('1', "Floor", ""),
                 ('2', "Wall", "")),
             name="Type",
@@ -373,19 +373,19 @@ class AchmKitchen(Operator):
             )
     oldtype = type_cabinet
 
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name='Thickness', min=0.001, max=5, default=0.018, precision=3,
             description='Board thickness',
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Depth', min=0.001, max=50, default=0.59, precision=3,
             description='Default cabinet depth',
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name='Height', min=0.001, max=50, default=0.70, precision=3,
             description='Default cabinet height',
             )
-    handle = EnumProperty(
+    handle: EnumProperty(
             items=(
                 ('1', "Model 1", ""),
                 ('2', "Model 2", ""),
@@ -400,69 +400,69 @@ class AchmKitchen(Operator):
             name="Handle",
             description="Type of handle",
             )
-    handle_x = FloatProperty(
+    handle_x: FloatProperty(
             name='', min=0.001, max=10,
             default=0.05, precision=3,
             description='Displacement in X relative position (limited to door size)',
             )
-    handle_z = FloatProperty(
+    handle_z: FloatProperty(
             name='', min=0.001, max=10,
             default=0.05, precision=3,
             description='Displacement in Z relative position (limited to door size)',
             )
 
-    baseboard = BoolProperty(
+    baseboard: BoolProperty(
             name="Baseboard",
             description="Create a baseboard automatically",
             default=True,
             )
-    baseheight = FloatProperty(
+    baseheight: FloatProperty(
             name='height', min=0.001, max=10,
             default=0.16, precision=3,
             description='Baseboard height',
             )
-    basefactor = FloatProperty(
+    basefactor: FloatProperty(
             name='sink', min=0, max=1,
             default=0.90, precision=3,
             description='Baseboard sink',
             )
 
-    countertop = BoolProperty(
+    countertop: BoolProperty(
             name="Countertop",
             description="Create a countertop automatically (only default cabinet height)",
             default=True,
             )
-    counterheight = FloatProperty(
+    counterheight: FloatProperty(
             name='height', min=0.001, max=10,
             default=0.02, precision=3,
             description='Countertop height',
             )
-    counterextend = FloatProperty(
+    counterextend: FloatProperty(
             name='extend', min=0.001, max=10,
             default=0.03, precision=3,
             description='Countertop extent',
             )
 
-    fitZ = BoolProperty(
+    fitZ: BoolProperty(
             name="Floor origin in Z=0",
             description="Use Z=0 axis as vertical origin floor position",
             default=True,
             )
-    moveZ = FloatProperty(
+    moveZ: FloatProperty(
             name='Z position', min=0.001, max=10,
             default=1.5, precision=3,
             description='Wall cabinet Z position from floor',
             )
 
-    cabinet_num = IntProperty(
+    cabinet_num: IntProperty(
             name='Number of Cabinets', min=1, max=30,
             default=1,
             description='Number total of cabinets in the Kitchen',
             )
-    cabinets = CollectionProperty(type=CabinetProperties)
+    cabinets: CollectionProperty(type=CabinetProperties)
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
diff --git a/archimesh/achm_lamp_maker.py b/archimesh/achm_lamp_maker.py
index 67fbfc1e..d9e7f64e 100644
--- a/archimesh/achm_lamp_maker.py
+++ b/archimesh/achm_lamp_maker.py
@@ -136,7 +136,7 @@ class AchmLamp(Operator):
     bl_category = 'Archimesh'
     bl_options = {'REGISTER', 'UNDO'}
     # preset
-    preset = EnumProperty(
+    preset: EnumProperty(
             items=(
                 ('0', "None", ""),
                 ('1', "Sphere", ""),
@@ -149,107 +149,107 @@ class AchmLamp(Operator):
             )
     oldpreset = preset
 
-    base_height = FloatProperty(
+    base_height: FloatProperty(
             name='Height',
             min=0.01, max=10, default=0.20, precision=3,
             description='lamp base height',
             )
-    base_segments = IntProperty(
+    base_segments: IntProperty(
             name='Segments',
             min=3, max=128, default=16,
             description='Number of segments (vertical)',
             )
-    base_rings = IntProperty(
+    base_rings: IntProperty(
             name='Rings',
             min=2, max=12, default=6,
             description='Number of rings (horizontal)',
             )
-    holder = FloatProperty(
+    holder: FloatProperty(
             name='Lampholder',
             min=0.001, max=10, default=0.02, precision=3,
             description='Lampholder height',
             )
-    smooth = BoolProperty(
+    smooth: BoolProperty(
             name="Smooth",
             description="Use smooth shader",
             default=True,
             )
-    subdivide = BoolProperty(
+    subdivide: BoolProperty(
             name="Subdivide",
             description="Add subdivision modifier",
             default=True,
             )
 
-    bz01 = FloatProperty(name='S1', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz02 = FloatProperty(name='S2', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz03 = FloatProperty(name='S3', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz04 = FloatProperty(name='S4', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz05 = FloatProperty(name='S5', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz06 = FloatProperty(name='S6', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz07 = FloatProperty(name='S7', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz08 = FloatProperty(name='S8', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz09 = FloatProperty(name='S9', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz10 = FloatProperty(name='S10', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz11 = FloatProperty(name='S11', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-    bz12 = FloatProperty(name='S12', min=-1, max=1, default=0, precision=3, description='Z shift factor')
-
-    br01 = FloatProperty(name='R1', min=0.001, max=10, default=0.06, precision=3, description='Ring radio')
-    br02 = FloatProperty(name='R2', min=0.001, max=10, default=0.08, precision=3, description='Ring radio')
-    br03 = FloatProperty(name='R3', min=0.001, max=10, default=0.09, precision=3, description='Ring radio')
-    br04 = FloatProperty(name='R4', min=0.001, max=10, default=0.08, precision=3, description='Ring radio')
-    br05 = FloatProperty(name='R5', min=0.001, max=10, default=0.06, precision=3, description='Ring radio')
-    br06 = FloatProperty(name='R6', min=0.001, max=10, default=0.03, precision=3, description='Ring radio')
-    br07 = FloatProperty(name='R7', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-    br08 = FloatProperty(name='R8', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-    br09 = FloatProperty(name='R9', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-    br10 = FloatProperty(name='R10', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-    br11 = FloatProperty(name='R11', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-    br12 = FloatProperty(name='R12', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
-
-    top_height = FloatProperty(
+    bz01: FloatProperty(name='S1', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz02: FloatProperty(name='S2', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz03: FloatProperty(name='S3', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz04: FloatProperty(name='S4', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz05: FloatProperty(name='S5', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz06: FloatProperty(name='S6', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz07: FloatProperty(name='S7', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz08: FloatProperty(name='S8', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz09: FloatProperty(name='S9', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz10: FloatProperty(name='S10', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz11: FloatProperty(name='S11', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+    bz12: FloatProperty(name='S12', min=-1, max=1, default=0, precision=3, description='Z shift factor')
+
+    br01: FloatProperty(name='R1', min=0.001, max=10, default=0.06, precision=3, description='Ring radio')
+    br02: FloatProperty(name='R2', min=0.001, max=10, default=0.08, precision=3, description='Ring radio')
+    br03: FloatProperty(name='R3', min=0.001, max=10, default=0.09, precision=3, description='Ring radio')
+    br04: FloatProperty(name='R4', min=0.001, max=10, default=0.08, precision=3, description='Ring radio')
+    br05: FloatProperty(name='R5', min=0.001, max=10, default=0.06, precision=3, description='Ring radio')
+    br06: FloatProperty(name='R6', min=0.001, max=10, default=0.03, precision=3, description='Ring radio')
+    br07: FloatProperty(name='R7', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+    br08: FloatProperty(name='R8', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+    br09: FloatProperty(name='R9', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+    br10: FloatProperty(name='R10', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+    br11: FloatProperty(name='R11', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+    br12: FloatProperty(name='R12', min=0.001, max=10, default=0.10, precision=3, description='Ring radio')
+
+    top_height: FloatProperty(
             name='Height', min=0.01, max=10,
             default=0.20, precision=3,
             description='lampshade height',
             )
-    top_segments = IntProperty(
+    top_segments: IntProperty(
             name='Segments', min=3, max=128,
             default=32,
             description='Number of segments (vertical)',
             )
-    tr01 = FloatProperty(
+    tr01: FloatProperty(
             name='R1', min=0.001, max=10,
             default=0.16, precision=3,
             description='lampshade bottom radio',
             )
-    tr02 = FloatProperty(name='R2', min=0.001, max=10,
+    tr02: FloatProperty(name='R2', min=0.001, max=10,
                          default=0.08, precision=3,
                          description='lampshade top radio')
-    pleats = BoolProperty(
+    pleats: BoolProperty(
             name="Pleats", description="Create pleats in the lampshade",
             default=False,
             )
-    tr03 = FloatProperty(
+    tr03: FloatProperty(
             name='R3', min=0.001, max=1,
             default=0.01, precision=3, description='Pleats size',
             )
-    energy = FloatProperty(
+    energy: FloatProperty(
             name='Light', min=0.00, max=1000,
             default=15, precision=3,
             description='Light intensity',
             )
-    opacity = FloatProperty(
+    opacity: FloatProperty(
             name='Translucency', min=0.00, max=1,
             default=0.3, precision=3,
             description='Lampshade translucency factor (1 completely translucent)',
             )
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             )
-    objcol = FloatVectorProperty(
+    objcol: FloatVectorProperty(
             name="Color",
             description="Color for material",
             default=(1.0, 1.0, 1.0, 1.0),
diff --git a/archimesh/achm_roof_maker.py b/archimesh/achm_roof_maker.py
index d88b5763..0cf6d222 100644
--- a/archimesh/achm_roof_maker.py
+++ b/archimesh/achm_roof_maker.py
@@ -43,38 +43,38 @@ class AchmRoof(Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # Define properties
-    roof_width = IntProperty(
+    roof_width: IntProperty(
             name='Num tiles X',
             min=1, max=100, default=6,
             description='Tiles in X axis',
             )
-    roof_height = IntProperty(
+    roof_height: IntProperty(
             name='Num tiles Y',
             min=1, max=100, default=3,
             description='Tiles in Y axis',
             )
 
-    roof_thick = FloatProperty(
+    roof_thick: FloatProperty(
             name='Tile thickness',
             min=0.000, max=0.50, default=0.012, precision=3,
             description='Thickness of the roof tile',
             )
-    roof_angle = FloatProperty(
+    roof_angle: FloatProperty(
             name='Roof slope', min=0.0, max=70.0, default=0.0, precision=1,
             description='Roof angle of slope',
             )
-    roof_scale = FloatProperty(
+    roof_scale: FloatProperty(
             name='Tile scale', min=0.001, max=10, default=1, precision=3,
             description='Scale of roof tile',
             )
 
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             )
 
-    model = EnumProperty(
+    model: EnumProperty(
             items=(
                 ('1', "Model 01", ""),
                 ('2', "Model 02", ""),
diff --git a/archimesh/achm_room_maker.py b/archimesh/achm_room_maker.py
index 71243ca2..11a259be 100644
--- a/archimesh/achm_room_maker.py
+++ b/archimesh/achm_room_maker.py
@@ -48,12 +48,12 @@ class AchmExportRoom(Operator, ExportHelper):
 
     # From ExportHelper. Filter filenames.
     filename_ext = ".dat"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.dat",
             options={'HIDDEN'},
             )
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="File Path",
             description="File path used for exporting room data file",
             maxlen=1024, default="",
@@ -160,12 +160,12 @@ class AchmImportRoom(Operator, ImportHelper):
 
     # From Helper. Filter filenames.
     filename_ext = ".dat"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.dat",
             options={'HIDDEN'},
             )
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="File Path",
             description="File path used for exporting room data file",
             maxlen=1024, default="",
@@ -835,7 +835,7 @@ def create_floor(rp, typ, myroom):
 # Define property group class to create, or modify, room walls.
 # ------------------------------------------------------------------
 class WallProperties(PropertyGroup):
-    w = FloatProperty(
+    w: FloatProperty(
             name='Length',
             min=-150, max=150,
             default=1, precision=3,
@@ -843,33 +843,33 @@ class WallProperties(PropertyGroup):
             update=update_room,
             )
 
-    a = BoolProperty(
+    a: BoolProperty(
             name="Advanced",
             description="Define advanced parameters of the wall",
             default=False,
             update=update_room,
             )
 
-    curved = BoolProperty(
+    curved: BoolProperty(
             name="Curved",
             description="Enable curved wall parameters",
             default=False,
             update=update_room,
             )
-    curve_factor = FloatProperty(
+    curve_factor: FloatProperty(
             name='Factor',
             min=-5, max=5,
             default=1, precision=1,
             description='Curvature variation',
             update=update_room,
             )
-    curve_arc_deg = FloatProperty(
+    curve_arc_deg: FloatProperty(
             name='Degrees', min=1, max=359,
             default=180, precision=1,
             description='Degrees of the curve arc (must be >= steps)',
             update=update_room,
             )
-    curve_steps = IntProperty(
+    curve_steps: IntProperty(
             name='Steps',
             min=2, max=50,
             default=12,
@@ -877,19 +877,19 @@ class WallProperties(PropertyGroup):
             update=update_room,
             )
 
-    m = FloatProperty(
+    m: FloatProperty(
             name='Peak', min=0, max=50,
             default=0, precision=3,
             description='Middle height variation',
             update=update_room,
             )
-    f = FloatProperty(
+    f: FloatProperty(
             name='Factor', min=-1, max=1,
             default=0, precision=3,
             description='Middle displacement',
             update=update_room,
             )
-    r = FloatProperty(
+    r: FloatProperty(
             name='Angle',
             min=-180, max=180,
             default=0, precision=1,
@@ -897,7 +897,7 @@ class WallProperties(PropertyGroup):
             update=update_room,
             )
 
-    h = EnumProperty(
+    h: EnumProperty(
             items=(
                 ('0', "Visible", ""),
                 ('1', "Baseboard", ""),
@@ -910,12 +910,12 @@ class WallProperties(PropertyGroup):
             )
 
     # opengl internal data
-    glpoint_a = FloatVectorProperty(
+    glpoint_a: FloatVectorProperty(
             name="glpointa",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_b = FloatVectorProperty(
+    glpoint_b: FloatVectorProperty(
             name="glpointb",
             description="Hidden property for opengl",
             default=(0, 0, 0),
@@ -1492,90 +1492,90 @@ def is_in_nextface(idx, activefaces, verts, x, y):
 # Define property group class to create or modify a rooms.
 # ------------------------------------------------------------------
 class RoomProperties(PropertyGroup):
-    room_height = FloatProperty(
+    room_height: FloatProperty(
             name='Height', min=0.001, max=50,
             default=2.4, precision=3,
             description='Room height', update=update_room,
             )
-    wall_width = FloatProperty(
+    wall_width: FloatProperty(
             name='Thickness', min=0.000, max=10,
             default=0.0, precision=3,
             description='Thickness of the walls', update=update_room,
             )
-    inverse = BoolProperty(
+    inverse: BoolProperty(
             name="Inverse", description="Inverse normals to outside",
             default=False,
             update=update_room,
             )
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             update=update_room,
             )
 
-    wall_num = IntProperty(
+    wall_num: IntProperty(
             name='Number of Walls', min=1, max=50,
             default=1,
             description='Number total of walls in the room', update=add_room_wall,
             )
 
-    baseboard = BoolProperty(
+    baseboard: BoolProperty(
             name="Baseboard", description="Create a baseboard automatically",
             default=True,
             update=update_room,
             )
 
-    base_width = FloatProperty(
+    base_width: FloatProperty(
             name='Width', min=0.001, max=10,
             default=0.015, precision=3,
             description='Baseboard width', update=update_room,
             )
-    base_height = FloatProperty(
+    base_height: FloatProperty(
             name='Height', min=0.05, max=20,
             default=0.12, precision=3,
             description='Baseboard height', update=update_room,
             )
 
-    ceiling = BoolProperty(
+    ceiling: BoolProperty(
             name="Ceiling", description="Create a ceiling",
             default=False, update=update_room,
             )
-    floor = BoolProperty(
+    floor: BoolProperty(
             name="Floor", description="Create a floor automatically",
             default=False,
             update=update_room,
             )
 
-    merge = BoolProperty(
+    merge: BoolProperty(
             name="Close walls", description="Close walls to create a full closed room",
             default=False, update=update_room,
             )
 
-    walls = CollectionProperty(
+    walls: CollectionProperty(
             type=WallProperties,
             )
 
-    shell = BoolProperty(
+    shell: BoolProperty(
             name="Wall cover", description="Create a cover of boards",
             default=False, update=update_room,
             )
-    shell_thick = FloatProperty(
+    shell_thick: FloatProperty(
             name='Thickness', min=0.001, max=1,
             default=0.025, precision=3,
             description='Cover board thickness', update=update_room,
             )
-    shell_height = FloatProperty(
+    shell_height: FloatProperty(
             name='Height', min=0.05, max=1,
             default=0.20, precision=3,
             description='Cover board height', update=update_room,
             )
-    shell_factor = FloatProperty(
+    shell_factor: FloatProperty(
             name='Top', min=0.1, max=1,
             default=1, precision=1,
             description='Percentage for top covering (1 Full)', update=update_room,
             )
-    shell_bfactor = FloatProperty(
+    shell_bfactor: FloatProperty(
             name='Bottom', min=0.1, max=1,
             default=1, precision=1,
             description='Percentage for bottom covering (1 Full)', update=update_room,
diff --git a/archimesh/achm_shelves_maker.py b/archimesh/achm_shelves_maker.py
index 6cbab554..c9351a07 100644
--- a/archimesh/achm_shelves_maker.py
+++ b/archimesh/achm_shelves_maker.py
@@ -34,34 +34,34 @@ from .achm_tools import *
 # Define property group class for shelves properties
 # ------------------------------------------------------------------
 class ShelvesProperties(PropertyGroup):
-    sX = FloatProperty(name='width', min=0.001, max=10, default=1,
+    sX: FloatProperty(name='width', min=0.001, max=10, default=1,
                        precision=3, description='Furniture width')
-    wY = FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Modify y size')
-    wZ = FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Modify z size')
+    wY: FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Modify y size')
+    wZ: FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Modify z size')
     # Cabinet position shift
-    pX = FloatProperty(name='', min=0, max=10, default=0, precision=3, description='Position x shift')
-    pY = FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Position y shift')
-    pZ = FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    pX: FloatProperty(name='', min=0, max=10, default=0, precision=3, description='Position x shift')
+    pY: FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Position y shift')
+    pZ: FloatProperty(name='', min=-10, max=10, default=0, precision=3, description='Position z shift')
 
     # Shelves
-    sNum = IntProperty(name='Shelves', min=0, max=12, default=6, description='Number total of shelves')
+    sNum: IntProperty(name='Shelves', min=0, max=12, default=6, description='Number total of shelves')
 
     # 12 shelves (shelf)
-    Z01 = FloatProperty(name='zS1', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z02 = FloatProperty(name='zS2', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z03 = FloatProperty(name='zS3', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z04 = FloatProperty(name='zS4', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z05 = FloatProperty(name='zS5', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z06 = FloatProperty(name='zS6', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z07 = FloatProperty(name='zS7', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z08 = FloatProperty(name='zS8', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z09 = FloatProperty(name='zS9', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z10 = FloatProperty(name='zS10', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z11 = FloatProperty(name='zS11', min=-10, max=10, default=0, precision=3, description='Position z shift')
-    Z12 = FloatProperty(name='zS12', min=-10, max=10, default=0, precision=3, description='Position z shift')
-
-    right = BoolProperty(name="Right", description="Create right side", default=True)
-    left = BoolProperty(name="Left", description="Create left side", default=True)
+    Z01: FloatProperty(name='zS1', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z02: FloatProperty(name='zS2', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z03: FloatProperty(name='zS3', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z04: FloatProperty(name='zS4', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z05: FloatProperty(name='zS5', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z06: FloatProperty(name='zS6', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z07: FloatProperty(name='zS7', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z08: FloatProperty(name='zS8', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z09: FloatProperty(name='zS9', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z10: FloatProperty(name='zS10', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z11: FloatProperty(name='zS11', min=-10, max=10, default=0, precision=3, description='Position z shift')
+    Z12: FloatProperty(name='zS12', min=-10, max=10, default=0, precision=3, description='Position z shift')
+
+    right: BoolProperty(name="Right", description="Create right side", default=True)
+    left: BoolProperty(name="Left", description="Create left side", default=True)
 
 bpy.utils.register_class(ShelvesProperties)
 
@@ -77,37 +77,37 @@ class AchmShelves(Operator):
     bl_category = 'Archimesh'
     bl_options = {'REGISTER', 'UNDO'}
 
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name='Side Thickness', min=0.001, max=5,
             default=0.03, precision=3,
             description='Board thickness',
             )
-    sthickness = FloatProperty(
+    sthickness: FloatProperty(
             name='Shelves Thickness', min=0.001, max=5,
             default=0.03, precision=3,
             description='Board thickness',
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Depth', min=0.001, max=50,
             default=0.28, precision=3,
             description='Default unit depth',
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name='Height', min=0.001, max=50,
             default=2, precision=3,
             description='Default unit height',
             )
-    top = FloatProperty(
+    top: FloatProperty(
             name='Top', min=0, max=50,
             default=0.03, precision=3,
             description='Default top shelf position',
             )
-    bottom = FloatProperty(
+    bottom: FloatProperty(
             name='Bottom', min=0, max=50,
             default=0.07, precision=3,
             description='Default bottom self position',
             )
-    stype = EnumProperty(
+    stype: EnumProperty(
             items=(
                 ('1', "Full side", ""),
                 ('4', "4 Legs", ""),
@@ -116,22 +116,22 @@ class AchmShelves(Operator):
             description="Type of side construction",
             )
 
-    fitZ = BoolProperty(
+    fitZ: BoolProperty(
             name="Floor origin in Z=0",
             description="Use Z=0 axis as vertical origin floor position",
             default=True,
             )
 
-    shelves_num = IntProperty(
+    shelves_num: IntProperty(
             name='Number of Units',
             min=1, max=10,
             default=1,
             description='Number total of shelves units',
             )
-    shelves = CollectionProperty(type=ShelvesProperties)
+    shelves: CollectionProperty(type=ShelvesProperties)
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
diff --git a/archimesh/achm_stairs_maker.py b/archimesh/achm_stairs_maker.py
index d5b1f82e..2d687a72 100644
--- a/archimesh/achm_stairs_maker.py
+++ b/archimesh/achm_stairs_maker.py
@@ -43,7 +43,7 @@ class AchmStairs(Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # Define properties
-    model = EnumProperty(
+    model: EnumProperty(
             items=(
                 ('1', "Rectangular", ""),
                 ('2', "Rounded", ""),
@@ -51,85 +51,85 @@ class AchmStairs(Operator):
             name="Model",
             description="Type of steps",
             )
-    radio = FloatProperty(
+    radio: FloatProperty(
             name='',
             min=0.001, max=0.500,
             default=0.20, precision=3,
             description='Radius factor for rounded',
             )
-    curve = BoolProperty(
+    curve: BoolProperty(
             name="Include deformation handles",
             description="Include a curve to modify the stairs curve",
             default=False,
             )
 
-    step_num = IntProperty(
+    step_num: IntProperty(
             name='Number of steps',
             min=1, max=1000,
             default=3,
             description='Number total of steps',
             )
-    max_width = FloatProperty(
+    max_width: FloatProperty(
             name='Width',
             min=0.001, max=10,
             default=1, precision=3,
             description='Step maximum width',
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Depth',
             min=0.001, max=10,
             default=0.30, precision=3,
             description='Depth of the step',
             )
-    shift = FloatProperty(
+    shift: FloatProperty(
             name='Shift',
             min=0.001, max=1,
             default=1, precision=3,
             description='Step shift in Y axis',
             )
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name='Thickness',
             min=0.001, max=10,
             default=0.03, precision=3,
             description='Step thickness',
             )
-    sizev = BoolProperty(
+    sizev: BoolProperty(
             name="Variable width",
             description="Steps are not equal in width",
             default=False,
             )
-    back = BoolProperty(
+    back: BoolProperty(
             name="Close sides",
             description="Close all steps side to make a solid structure",
             default=False,
             )
-    min_width = FloatProperty(
+    min_width: FloatProperty(
             name='',
             min=0.001, max=10,
             default=1, precision=3,
             description='Step minimum width',
             )
 
-    height = FloatProperty(
+    height: FloatProperty(
             name='height',
             min=0.001, max=10,
             default=0.14, precision=3,
             description='Step height',
             )
-    front_gap = FloatProperty(
+    front_gap: FloatProperty(
             name='Front',
             min=0, max=10,
             default=0.03,
             precision=3,
             description='Front gap',
             )
-    side_gap = FloatProperty(
+    side_gap: FloatProperty(
             name='Side',
             min=0, max=10,
             default=0, precision=3,
             description='Side gap',
             )
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
diff --git a/archimesh/achm_venetian_maker.py b/archimesh/achm_venetian_maker.py
index 57adf0ef..01d0c422 100644
--- a/archimesh/achm_venetian_maker.py
+++ b/archimesh/achm_venetian_maker.py
@@ -328,38 +328,38 @@ def shape_mesh_and_create_children(mainobject, tmp_mesh, update=False):
 # Define property group class to create or modify
 # ------------------------------------------------------------------
 class ObjectProperties(PropertyGroup):
-    width = FloatProperty(
+    width: FloatProperty(
             name='Width',
             min=0.30, max=4, default=1, precision=3,
             description='Total width', update=update_object,
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name='Height',
             min=0.20, max=10, default=1.7, precision=3,
             description='Total height',
             update=update_object,
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Slat depth', min=0.02, max=0.30, default=0.04,
             precision=3,
             description='Slat depth', update=update_object,
             )
-    angle = FloatProperty(
+    angle: FloatProperty(
             name='Angle', min=0, max=85, default=0, precision=1,
             description='Angle of the slats', update=update_object,
             )
-    ratio = IntProperty(
+    ratio: IntProperty(
             name='Extend', min=0, max=100, default=100,
             description='% of extension (100 full extend)', update=update_object,
             )
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True, update=update_object,
             )
-    objcol = FloatVectorProperty(
+    objcol: FloatVectorProperty(
             name="Color",
             description="Color for material",
             default=(0.616, 0.435, 1.0, 1.0),
diff --git a/archimesh/achm_window_maker.py b/archimesh/achm_window_maker.py
index 1e43c792..a026232a 100644
--- a/archimesh/achm_window_maker.py
+++ b/archimesh/achm_window_maker.py
@@ -242,40 +242,40 @@ def shape_mesh_and_create_children(mainobject, tmp_mesh, update=False):
 # Define property group class to create or modify
 # ------------------------------------------------------------------
 class ObjectProperties(PropertyGroup):
-    width = FloatProperty(
+    width: FloatProperty(
             name='Width',
             min=0.20, max=50,
             default=1.20, precision=3,
             description='window width',
             update=update_object,
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name='Depth',
             min=0.07, max=1,
             default=0.10, precision=3,
             description='window depth',
             update=update_object,
             )
-    height = FloatProperty(
+    height: FloatProperty(
             name='Height',
             min=0.20, max=50,
             default=1, precision=3,
             description='window height',
             update=update_object,
             )
-    r = FloatProperty(
+    r: FloatProperty(
             name='Rotation', min=0, max=360, default=0, precision=1,
             description='Window rotation',
             update=update_object,
             )
 
-    external = BoolProperty(
+    external: BoolProperty(
             name="External frame",
             description="Create an external front frame",
             default=True,
             update=update_object,
             )
-    frame = FloatProperty(
+    frame: FloatProperty(
             name='External Frame',
             min=0.001, max=1,
             default=0.01, precision=3,
@@ -283,21 +283,21 @@ class ObjectProperties(PropertyGroup):
             update=update_object,
             )
 
-    frame_L = FloatProperty(
+    frame_L: FloatProperty(
             name='Frame',
             min=0.02, max=1,
             default=0.06, precision=3,
             description='Frame size',
             update=update_object,
             )
-    wf = FloatProperty(
+    wf: FloatProperty(
             name='WinFrame',
             min=0.001, max=1,
             default=0.05, precision=3,
             description='Window Frame size',
             update=update_object,
             )
-    leafratio = FloatProperty(
+    leafratio: FloatProperty(
             name='Leaf ratio',
             min=0.001, max=0.999,
             default=0.50,
@@ -305,7 +305,7 @@ class ObjectProperties(PropertyGroup):
             description='Leaf thickness ratio',
             update=update_object,
             )
-    opentype = EnumProperty(
+    opentype: EnumProperty(
             items=(
                 ('1', "Rail window", ""),
                 ('2', "Two leaf", ""),
@@ -315,34 +315,34 @@ class ObjectProperties(PropertyGroup):
             description="Defines type of window",
             update=update_object,
             )
-    handle = BoolProperty(
+    handle: BoolProperty(
             name="Create handles",
             description="Create default handle to the leaf",
             default=True,
             update=update_object,
             )
 
-    sill = BoolProperty(
+    sill: BoolProperty(
             name="Sill",
             description="Add sill to window",
             default=True,
             update=update_object,
             )
-    sill_thickness = FloatProperty(
+    sill_thickness: FloatProperty(
             name='Thickness',
             min=0, max=50,
             default=0.01, precision=3,
             description='Sill thickness',
             update=update_object,
             )
-    sill_back = FloatProperty(
+    sill_back: FloatProperty(
             name='Back',
             min=0, max=10,
             default=0.0, precision=3,
             description='Extrusion in back side',
             update=update_object,
             )
-    sill_front = FloatProperty(
+    sill_front: FloatProperty(
             name='Front',
             min=0, max=10,
             default=0.12, precision=3,
@@ -350,39 +350,39 @@ class ObjectProperties(PropertyGroup):
             update=update_object,
             )
 
-    blind = BoolProperty(
+    blind: BoolProperty(
             name="Blind",
             description="Create an external blind",
             default=False,
             update=update_object,
             )
-    blind_box = BoolProperty(
+    blind_box: BoolProperty(
             name="Blind box", description="Create a box over frame for blind",
             default=True,
             update=update_object,
             )
-    blind_height = FloatProperty(
+    blind_height: FloatProperty(
             name='Height',
             min=0.001, max=10,
             default=0.12, precision=3,
             description='Blind box height',
             update=update_object,
             )
-    blind_back = FloatProperty(
+    blind_back: FloatProperty(
             name='Back',
             min=0.001, max=10,
             default=0.002, precision=3,
             description='Extrusion in back side',
             update=update_object,
             )
-    blind_rail = FloatProperty(
+    blind_rail: FloatProperty(
             name='Separation',
             min=0.001, max=10,
             default=0.10, precision=3,
             description='Separation from frame',
             update=update_object,
             )
-    blind_ratio = IntProperty(
+    blind_ratio: IntProperty(
             name='Extend',
             min=0, max=100,
             default=20,
@@ -391,24 +391,24 @@ class ObjectProperties(PropertyGroup):
             )
 
     # Materials
-    crt_mat = BoolProperty(
+    crt_mat: BoolProperty(
             name="Create default Cycles materials",
             description="Create default materials for Cycles render",
             default=True,
             update=update_object,
             )
     # opengl internal data
-    glpoint_a = FloatVectorProperty(
+    glpoint_a: FloatVectorProperty(
             name="glpointa",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_b = FloatVectorProperty(
+    glpoint_b: FloatVectorProperty(
             name="glpointb",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_c = FloatVectorProperty(
+    glpoint_c: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
diff --git a/archimesh/achm_window_panel.py b/archimesh/achm_window_panel.py
index 16c9209b..34911734 100644
--- a/archimesh/achm_window_panel.py
+++ b/archimesh/achm_window_panel.py
@@ -1553,7 +1553,7 @@ def create_ctrl_box(parentobj, objname):
 # Define property group class to create or modify
 # ------------------------------------------------------------------
 class GeneralPanelProperties(PropertyGroup):
-    prs = EnumProperty(
+    prs: EnumProperty(
             items=(
                 ('1', "WINDOW 250X200", ""),
                 ('2', "WINDOW 200X200", ""),
@@ -1569,40 +1569,40 @@ class GeneralPanelProperties(PropertyGroup):
             update=update_using_default,
             )
     son = prs
-    gen = IntProperty(
+    gen: IntProperty(
             name='H Count', min=1, max=8, default=3,
             description='Horizontal Panes',
             update=update_window,
             )
-    yuk = IntProperty(
+    yuk: IntProperty(
             name='V Count', min=1, max=5, default=1,
             description='Vertical Panes',
             update=update_window,
             )
-    kl1 = IntProperty(
+    kl1: IntProperty(
             name='Outer Frame', min=2, max=50, default=5,
             description='Outside Frame Thickness',
             update=update_window,
             )
-    kl2 = IntProperty(
+    kl2: IntProperty(
             name='Risers', min=2, max=50, default=5,
             description='Risers Width',
             update=update_window,
             )
-    fk = IntProperty(
+    fk: IntProperty(
             name='Inner Frame', min=1, max=20, default=2,
             description='Inside Frame Thickness',
             update=update_window,
             )
 
-    mr = BoolProperty(name='Sill', default=True, description='Window Sill', update=update_window)
-    mr1 = IntProperty(name='', min=1, max=20, default=4, description='Height', update=update_window)
-    mr2 = IntProperty(name='', min=0, max=20, default=4, description='First Depth', update=update_window)
-    mr3 = IntProperty(name='', min=1, max=50, default=20, description='Second Depth', update=update_window)
-    mr4 = IntProperty(name='', min=0, max=50, default=0, description='Extrusion for Jamb',
+    mr: BoolProperty(name='Sill', default=True, description='Window Sill', update=update_window)
+    mr1: IntProperty(name='', min=1, max=20, default=4, description='Height', update=update_window)
+    mr2: IntProperty(name='', min=0, max=20, default=4, description='First Depth', update=update_window)
+    mr3: IntProperty(name='', min=1, max=50, default=20, description='Second Depth', update=update_window)
+    mr4: IntProperty(name='', min=0, max=50, default=0, description='Extrusion for Jamb',
                                 update=update_window)
 
-    mt1 = EnumProperty(
+    mt1: EnumProperty(
             items=(
                 ('1', "PVC", ""),
                 ('2', "WOOD", ""),
@@ -1613,7 +1613,7 @@ class GeneralPanelProperties(PropertyGroup):
             description='Material to use',
             update=update_window,
             )
-    mt2 = EnumProperty(
+    mt2: EnumProperty(
             items=(
                 ('1', "PVC", ""),
                 ('2', "WOOD", ""),
@@ -1625,14 +1625,14 @@ class GeneralPanelProperties(PropertyGroup):
             update=update_window,
             )
 
-    r = FloatProperty(
+    r: FloatProperty(
             name='Rotation',
             min=0, max=360, default=0, precision=1,
             description='Panel rotation',
             update=update_window,
             )
 
-    UST = EnumProperty(
+    UST: EnumProperty(
             items=(
                 ('1', "Flat", ""),
                 ('2', "Arch", ""),
@@ -1643,7 +1643,7 @@ class GeneralPanelProperties(PropertyGroup):
             description='Type of window upper section',
             update=update_window,
             )
-    DT2 = EnumProperty(
+    DT2: EnumProperty(
             items=(
                 ('1', "Difference", ""),
                 ('2', "Radius", ""),
@@ -1652,7 +1652,7 @@ class GeneralPanelProperties(PropertyGroup):
             default='1',
             update=update_window,
             )
-    DT3 = EnumProperty(
+    DT3: EnumProperty(
             items=(
                 ('1', "Difference", ""),
                 ('2', "Incline %", ""),
@@ -1662,102 +1662,102 @@ class GeneralPanelProperties(PropertyGroup):
             default='1', update=update_window,
             )
 
-    VL1 = IntProperty(name='', min=-10000, max=10000, default=30, update=update_window)  # Fark
-    VL2 = IntProperty(name='', min=1, max=10000, default=30, update=update_window)  # Cap
-    VL3 = IntProperty(name='', min=-100, max=100, default=30, update=update_window)  # Egim %
-    VL4 = IntProperty(name='', min=-45, max=45, default=30, update=update_window)  # Egim Aci
+    VL1: IntProperty(name='', min=-10000, max=10000, default=30, update=update_window)  # Fark
+    VL2: IntProperty(name='', min=1, max=10000, default=30, update=update_window)  # Cap
+    VL3: IntProperty(name='', min=-100, max=100, default=30, update=update_window)  # Egim %
+    VL4: IntProperty(name='', min=-45, max=45, default=30, update=update_window)  # Egim Aci
 
-    res = IntProperty(name='Resolution', min=2, max=360, default=36, update=update_window)  # Res
+    res: IntProperty(name='Resolution', min=2, max=360, default=36, update=update_window)  # Res
 
-    gnx0 = IntProperty(name='', min=1, max=300, default=60, description='1st Window Width',
+    gnx0: IntProperty(name='', min=1, max=300, default=60, description='1st Window Width',
                                  update=update_window)
-    gnx1 = IntProperty(name='', min=1, max=300, default=110, description='2nd Window Width',
+    gnx1: IntProperty(name='', min=1, max=300, default=110, description='2nd Window Width',
                                  update=update_window)
-    gnx2 = IntProperty(name='', min=1, max=300, default=60, description='3rd Window Width',
+    gnx2: IntProperty(name='', min=1, max=300, default=60, description='3rd Window Width',
                                  update=update_window)
-    gnx3 = IntProperty(name='', min=1, max=300, default=60, description='4th Window Width',
+    gnx3: IntProperty(name='', min=1, max=300, default=60, description='4th Window Width',
                                  update=update_window)
-    gnx4 = IntProperty(name='', min=1, max=300, default=60, description='5th Window Width',
+    gnx4: IntProperty(name='', min=1, max=300, default=60, description='5th Window Width',
                                  update=update_window)
-    gnx5 = IntProperty(name='', min=1, max=300, default=60, description='6th Window Width',
+    gnx5: IntProperty(name='', min=1, max=300, default=60, description='6th Window Width',
                                  update=update_window)
-    gnx6 = IntProperty(name='', min=1, max=300, default=60, description='7th Window Width',
+    gnx6: IntProperty(name='', min=1, max=300, default=60, description='7th Window Width',
                                  update=update_window)
-    gnx7 = IntProperty(name='', min=1, max=300, default=60, description='8th Window Width',
+    gnx7: IntProperty(name='', min=1, max=300, default=60, description='8th Window Width',
                                  update=update_window)
 
-    gny0 = IntProperty(name='', min=1, max=300, default=190, description='1st Row Height',
+    gny0: IntProperty(name='', min=1, max=300, default=190, description='1st Row Height',
                                  update=update_window)
-    gny1 = IntProperty(name='', min=1, max=300, default=45, description='2nd Row Height',
+    gny1: IntProperty(name='', min=1, max=300, default=45, description='2nd Row Height',
                                  update=update_window)
-    gny2 = IntProperty(name='', min=1, max=300, default=45, description='3rd Row Height',
+    gny2: IntProperty(name='', min=1, max=300, default=45, description='3rd Row Height',
                                  update=update_window)
-    gny3 = IntProperty(name='', min=1, max=300, default=45, description='4th Row Height',
+    gny3: IntProperty(name='', min=1, max=300, default=45, description='4th Row Height',
                                  update=update_window)
-    gny4 = IntProperty(name='', min=1, max=300, default=45, description='5th Row Height',
+    gny4: IntProperty(name='', min=1, max=300, default=45, description='5th Row Height',
                                  update=update_window)
 
-    k00 = BoolProperty(name='', default=True, update=update_window)
-    k01 = BoolProperty(name='', default=False, update=update_window)
-    k02 = BoolProperty(name='', default=True, update=update_window)
-    k03 = BoolProperty(name='', default=False, update=update_window)
-    k04 = BoolProperty(name='', default=False, update=update_window)
-    k05 = BoolProperty(name='', default=False, update=update_window)
-    k06 = BoolProperty(name='', default=False, update=update_window)
-    k07 = BoolProperty(name='', default=False, update=update_window)
-
-    k10 = BoolProperty(name='', default=False, update=update_window)
-    k11 = BoolProperty(name='', default=False, update=update_window)
-    k12 = BoolProperty(name='', default=False, update=update_window)
-    k13 = BoolProperty(name='', default=False, update=update_window)
-    k14 = BoolProperty(name='', default=False, update=update_window)
-    k15 = BoolProperty(name='', default=False, update=update_window)
-    k16 = BoolProperty(name='', default=False, update=update_window)
-    k17 = BoolProperty(name='', default=False, update=update_window)
-
-    k20 = BoolProperty(name='', default=False, update=update_window)
-    k21 = BoolProperty(name='', default=False, update=update_window)
-    k22 = BoolProperty(name='', default=False, update=update_window)
-    k23 = BoolProperty(name='', default=False, update=update_window)
-    k24 = BoolProperty(name='', default=False, update=update_window)
-    k25 = BoolProperty(name='', default=False, update=update_window)
-    k26 = BoolProperty(name='', default=False, update=update_window)
-    k27 = BoolProperty(name='', default=False, update=update_window)
-
-    k30 = BoolProperty(name='', default=False, update=update_window)
-    k31 = BoolProperty(name='', default=False, update=update_window)
-    k32 = BoolProperty(name='', default=False, update=update_window)
-    k33 = BoolProperty(name='', default=False, update=update_window)
-    k34 = BoolProperty(name='', default=False, update=update_window)
-    k35 = BoolProperty(name='', default=False, update=update_window)
-    k36 = BoolProperty(name='', default=False, update=update_window)
-    k37 = BoolProperty(name='', default=False, update=update_window)
-
-    k40 = BoolProperty(name='', default=False, update=update_window)
-    k41 = BoolProperty(name='', default=False, update=update_window)
-    k42 = BoolProperty(name='', default=False, update=update_window)
-    k43 = BoolProperty(name='', default=False, update=update_window)
-    k44 = BoolProperty(name='', default=False, update=update_window)
-    k45 = BoolProperty(name='', default=False, update=update_window)
-    k46 = BoolProperty(name='', default=False, update=update_window)
-    k47 = BoolProperty(name='', default=False, update=update_window)
+    k00: BoolProperty(name='', default=True, update=update_window)
+    k01: BoolProperty(name='', default=False, update=update_window)
+    k02: BoolProperty(name='', default=True, update=update_window)
+    k03: BoolProperty(name='', default=False, update=update_window)
+    k04: BoolProperty(name='', default=False, update=update_window)
+    k05: BoolProperty(name='', default=False, update=update_window)
+    k06: BoolProperty(name='', default=False, update=update_window)
+    k07: BoolProperty(name='', default=False, update=update_window)
+
+    k10: BoolProperty(name='', default=False, update=update_window)
+    k11: BoolProperty(name='', default=False, update=update_window)
+    k12: BoolProperty(name='', default=False, update=update_window)
+    k13: BoolProperty(name='', default=False, update=update_window)
+    k14: BoolProperty(name='', default=False, update=update_window)
+    k15: BoolProperty(name='', default=False, update=update_window)
+    k16: BoolProperty(name='', default=False, update=update_window)
+    k17: BoolProperty(name='', default=False, update=update_window)
+
+    k20: BoolProperty(name='', default=False, update=update_window)
+    k21: BoolProperty(name='', default=False, update=update_window)
+    k22: BoolProperty(name='', default=False, update=update_window)
+    k23: BoolProperty(name='', default=False, update=update_window)
+    k24: BoolProperty(name='', default=False, update=update_window)
+    k25: BoolProperty(name='', default=False, update=update_window)
+    k26: BoolProperty(name='', default=False, update=update_window)
+    k27: BoolProperty(name='', default=False, update=update_window)
+
+    k30: BoolProperty(name='', default=False, update=update_window)
+    k31: BoolProperty(name='', default=False, update=update_window)
+    k32: BoolProperty(name='', default=False, update=update_window)
+    k33: BoolProperty(name='', default=False, update=update_window)
+    k34: BoolProperty(name='', default=False, update=update_window)
+    k35: BoolProperty(name='', default=False, update=update_window)
+    k36: BoolProperty(name='', default=False, update=update_window)
+    k37: BoolProperty(name='', default=False, update=update_window)
+
+    k40: BoolProperty(name='', default=False, update=update_window)
+    k41: BoolProperty(name='', default=False, update=update_window)
+    k42: BoolProperty(name='', default=False, update=update_window)
+    k43: BoolProperty(name='', default=False, update=update_window)
+    k44: BoolProperty(name='', default=False, update=update_window)
+    k45: BoolProperty(name='', default=False, update=update_window)
+    k46: BoolProperty(name='', default=False, update=update_window)
+    k47: BoolProperty(name='', default=False, update=update_window)
     # opengl internal data
-    glpoint_a = FloatVectorProperty(
+    glpoint_a: FloatVectorProperty(
             name="glpointa",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_b = FloatVectorProperty(
+    glpoint_b: FloatVectorProperty(
             name="glpointb",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_c = FloatVectorProperty(
+    glpoint_c: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
             )
-    glpoint_d = FloatVectorProperty(
+    glpoint_d: FloatVectorProperty(
             name="glpointc",
             description="Hidden property for opengl",
             default=(0, 0, 0),
diff --git a/btrace/__init__.py b/btrace/__init__.py
index 8f00f2c3..dee32a3f 100644
--- a/btrace/__init__.py
+++ b/btrace/__init__.py
@@ -66,7 +66,7 @@ from bpy.props import (
 class btrace_preferences(AddonPreferences):
     bl_idname = __name__
 
-    expand_enum = EnumProperty(
+    expand_enum: EnumProperty(
             name="UI Options",
             items=[
                  ('list', "Drop down list",
diff --git a/btrace/bTrace_props.py b/btrace/bTrace_props.py
index 2a56946e..68d7f087 100644
--- a/btrace/bTrace_props.py
+++ b/btrace/bTrace_props.py
@@ -33,7 +33,7 @@ from bpy.props import (
 # Class to define properties
 class TracerProperties(PropertyGroup):
     """Options for tools"""
-    curve_spline = EnumProperty(
+    curve_spline: EnumProperty(
             name="Spline",
             items=(("POLY", "Poly", "Use Poly spline type"),
                    ("NURBS", "Nurbs", "Use Nurbs spline type"),
@@ -41,7 +41,7 @@ class TracerProperties(PropertyGroup):
             description="Choose which type of spline to use when curve is created",
             default="BEZIER"
             )
-    curve_handle = EnumProperty(
+    curve_handle: EnumProperty(
             name="Handle",
             items=(("ALIGNED", "Aligned", "Use Aligned Handle Type"),
                    ("AUTOMATIC", "Automatic", "Use Auto Handle Type"),
@@ -50,272 +50,272 @@ class TracerProperties(PropertyGroup):
             description="Choose which type of handle to use when curve is created",
             default="VECTOR"
             )
-    curve_resolution = IntProperty(
+    curve_resolution: IntProperty(
             name="Bevel Resolution",
             min=1, max=32,
             default=4,
             description="Adjust the Bevel resolution"
             )
-    curve_depth = FloatProperty(
+    curve_depth: FloatProperty(
             name="Bevel Depth",
             min=0.0, max=100.0,
             default=0.1,
             description="Adjust the Bevel depth"
             )
-    curve_u = IntProperty(
+    curve_u: IntProperty(
             name="Resolution U",
             min=0, max=64,
             default=12,
             description="Adjust the Surface resolution"
             )
-    curve_join = BoolProperty(
+    curve_join: BoolProperty(
             name="Join Curves",
             default=False,
             description="Join all the curves after they have been created"
             )
-    curve_smooth = BoolProperty(
+    curve_smooth: BoolProperty(
             name="Smooth",
             default=True,
             description="Render curve smooth"
             )
     # Option to Duplicate Mesh
-    object_duplicate = BoolProperty(
+    object_duplicate: BoolProperty(
             name="Apply to Copy",
             default=False,
             description="Apply curve to a copy of object"
             )
     # Distort Mesh options
-    distort_modscale = IntProperty(
+    distort_modscale: IntProperty(
             name="Modulation Scale",
             min=0, max=50,
             default=2,
             description="Add a scale to modulate the curve at random points, set to 0 to disable"
             )
-    distort_noise = FloatProperty(
+    distort_noise: FloatProperty(
             name="Mesh Noise",
             min=0.0, max=50.0,
             default=0.00,
             description="Adjust noise added to mesh before adding curve"
             )
     # Particle Options
-    particle_step = IntProperty(
+    particle_step: IntProperty(
             name="Step Size",
             min=1, max=50,
             default=5,
             description="Sample one every this number of frames"
             )
-    particle_auto = BoolProperty(
+    particle_auto: BoolProperty(
             name="Auto Frame Range",
             default=True,
             description="Calculate Frame Range from particles life"
             )
-    particle_f_start = IntProperty(
+    particle_f_start: IntProperty(
             name='Start Frame',
             min=1, max=5000,
             default=1,
             description='Start frame'
             )
-    particle_f_end = IntProperty(
+    particle_f_end: IntProperty(
             name="End Frame",
             min=1, max=5000,
             default=250,
             description="End frame"
             )
     # F-Curve Modifier Properties
-    fcnoise_rot = BoolProperty(
+    fcnoise_rot: BoolProperty(
             name="Rotation",
             default=False,
             description="Affect Rotation"
             )
-    fcnoise_loc = BoolProperty(
+    fcnoise_loc: BoolProperty(
             name="Location",
             default=True,
             description="Affect Location"
             )
-    fcnoise_scale = BoolProperty(
+    fcnoise_scale: BoolProperty(
             name="Scale",
             default=False,
             description="Affect Scale"
             )
-    fcnoise_amp = IntProperty(
+    fcnoise_amp: IntProperty(
             name="Amp",
             min=1, max=500,
             default=5,
             description="Adjust the amplitude"
             )
-    fcnoise_timescale = FloatProperty(
+    fcnoise_timescale: FloatProperty(
             name="Time Scale",
             min=1, max=500,
             default=50,
             description="Adjust the time scale"
             )
-    fcnoise_key = BoolProperty(
+    fcnoise_key: BoolProperty(
             name="Add Keyframe",
             default=True,
             description="Keyframe is needed for tool, this adds a LocRotScale keyframe"
             )
-    show_curve_settings = BoolProperty(
+    show_curve_settings: BoolProperty(
             name="Curve Settings",
             default=False,
             description="Change the curve settings for the created curve"
             )
-    material_settings = BoolProperty(
+    material_settings: BoolProperty(
             name="Material Settings",
             default=False,
             description="Change the material settings for the created curve"
             )
-    particle_settings = BoolProperty(
+    particle_settings: BoolProperty(
             name="Particle Settings",
             default=False,
             description="Show the settings for the created curve"
             )
-    animation_settings = BoolProperty(
+    animation_settings: BoolProperty(
             name="Animation Settings",
             default=False,
             description="Show the settings for the Animations"
             )
-    distort_curve = BoolProperty(
+    distort_curve: BoolProperty(
             name="Add Distortion",
             default=False,
             description="Set options to distort the final curve"
             )
-    connect_noise = BoolProperty(
+    connect_noise: BoolProperty(
             name="F-Curve Noise",
             default=False,
             description="Adds F-Curve Noise Modifier to selected objects"
             )
-    settings_objectTrace = BoolProperty(
+    settings_objectTrace: BoolProperty(
             name="Object Trace Settings",
             default=False,
             description="Trace selected mesh object with a curve"
             )
-    settings_objectsConnect = BoolProperty(
+    settings_objectsConnect: BoolProperty(
             name="Objects Connect Settings",
             default=False,
             description="Connect objects with a curve controlled by hooks"
             )
-    settings_objectTrace = BoolProperty(
+    settings_objectTrace: BoolProperty(
             name="Object Trace Settings",
             default=False,
             description="Trace selected mesh object with a curve"
             )
-    respect_order = BoolProperty(
+    respect_order: BoolProperty(
             name="Order",
             default=False,
             description="Remember order objects were selected"
             )
-    settings_particleTrace = BoolProperty(
+    settings_particleTrace: BoolProperty(
             name="Particle Trace Settings",
             default=False,
             description="Trace particle path with a  curve"
             )
-    settings_particleConnect = BoolProperty(
+    settings_particleConnect: BoolProperty(
             name="Particle Connect Settings",
             default=False,
             description="Connect particles with a curves and animated over particle lifetime"
             )
-    settings_growCurve = BoolProperty(
+    settings_growCurve: BoolProperty(
             name="Grow Curve Settings",
             default=False,
             description="Animate curve bevel over time by keyframing points radius"
             )
-    settings_fcurve = BoolProperty(
+    settings_fcurve: BoolProperty(
             name="F-Curve Settings",
             default=False,
             description="F-Curve Settings"
             )
-    settings_toggle = BoolProperty(
+    settings_toggle: BoolProperty(
             name="Settings",
             default=False,
             description="Toggle Settings"
             )
     # Animation Options
-    anim_auto = BoolProperty(
+    anim_auto: BoolProperty(
             name="Auto Frame Range",
             default=True,
             description="Automatically calculate Frame Range"
             )
-    anim_f_start = IntProperty(
+    anim_f_start: IntProperty(
             name="Start",
             min=1, max=2500,
             default=1,
             description="Start frame / Hidden object"
             )
-    anim_length = IntProperty(
+    anim_length: IntProperty(
             name="Duration",
             min=1,
             soft_max=1000, max=2500,
             default=100,
             description="Animation Length"
             )
-    anim_f_fade = IntProperty(
+    anim_f_fade: IntProperty(
             name="Fade After",
             min=0,
             soft_max=250, max=2500,
             default=10,
             description="Fade after this frames / Zero means no fade"
             )
-    anim_delay = IntProperty(
+    anim_delay: IntProperty(
             name="Grow",
             min=0, max=50,
             default=5,
             description="Frames it takes a point to grow"
             )
-    anim_tails = BoolProperty(
+    anim_tails: BoolProperty(
             name='Tails on endpoints',
             default=True,
             description='Set radius to zero for open splines endpoints'
             )
-    anim_keepr = BoolProperty(
+    anim_keepr: BoolProperty(
             name="Keep Radius",
             default=True,
             description="Try to keep radius data from original curve"
             )
-    animate = BoolProperty(
+    animate: BoolProperty(
             name="Animate Result",
             default=False,
             description="Animate the final curve objects"
             )
     # Convert to Curve options
-    convert_conti = BoolProperty(
+    convert_conti: BoolProperty(
             name="Continuous",
             default=True,
             description="Create a continuous curve using verts from mesh"
             )
-    convert_everyedge = BoolProperty(
+    convert_everyedge: BoolProperty(
             name="Every Edge",
             default=False,
             description="Create a curve from all verts in a mesh"
             )
-    convert_edgetype = EnumProperty(
+    convert_edgetype: EnumProperty(
             name="Edge Type for Curves",
             items=(("CONTI", "Continuous", "Create a continuous curve using verts from mesh"),
                    ("EDGEALL", "All Edges", "Create a curve from every edge in a mesh")),
             description="Choose which type of spline to use when curve is created",
             default="CONTI"
             )
-    convert_joinbefore = BoolProperty(
+    convert_joinbefore: BoolProperty(
             name="Join objects before convert",
             default=False,
             description="Join all selected mesh to one object before converting to mesh"
             )
     # Mesh Follow Options
-    fol_edge_select = BoolProperty(
+    fol_edge_select: BoolProperty(
             name="Edge",
             default=False,
             description="Grow from edges"
             )
-    fol_vert_select = BoolProperty(
+    fol_vert_select: BoolProperty(
             name="Vertex",
             default=False,
             description="Grow from verts"
             )
-    fol_face_select = BoolProperty(
+    fol_face_select: BoolProperty(
             name="Face",
             default=True,
             description="Grow from faces"
             )
-    fol_mesh_type = EnumProperty(
+    fol_mesh_type: EnumProperty(
             name="Mesh type",
             default="VERTS",
             description="Mesh feature to draw cruves from",
@@ -324,25 +324,25 @@ class TracerProperties(PropertyGroup):
                    ("FACES", "Faces", "Draw from Faces"),
                    ("OBJECT", "Object", "Draw from Object origin"))
             )
-    fol_start_frame = IntProperty(
+    fol_start_frame: IntProperty(
             name="Start Frame",
             min=1, max=2500,
             default=1,
             description="Start frame for range to trace"
             )
-    fol_end_frame = IntProperty(
+    fol_end_frame: IntProperty(
             name="End Frame",
             min=1, max=2500,
             default=250,
             description="End frame for range to trace"
             )
-    fol_perc_verts = FloatProperty(
+    fol_perc_verts: FloatProperty(
             name="Reduce selection by",
             min=0.001, max=1.000,
             default=0.5,
             description="percentage of total verts to trace"
             )
-    fol_sel_option = EnumProperty(
+    fol_sel_option: EnumProperty(
             name="Selection type",
             description="Choose which objects to follow",
             default="RANDOM",
@@ -350,32 +350,32 @@ class TracerProperties(PropertyGroup):
                    ("CUSTOM", "Custom Select", "Follow selected items"),
                    ("ALL", "All", "Follow all items"))
             )
-    trace_mat_color = FloatVectorProperty(
+    trace_mat_color: FloatVectorProperty(
             name="Material Color",
             description="Choose material color",
             min=0, max=1,
             default=(0.0, 0.3, 0.6),
             subtype="COLOR"
             )
-    trace_mat_random = BoolProperty(
+    trace_mat_random: BoolProperty(
             name="Random Color",
             default=False,
             description='Make the material colors random'
             )
     # Material custom Properties properties
-    mat_simple_adv_toggle = EnumProperty(
+    mat_simple_adv_toggle: EnumProperty(
             name="Material Options",
             items=(("SIMPLE", "Simple", "Show Simple Material Options"),
                    ("ADVANCED", "Advanced", "Show Advanced Material Options")),
             description="Choose which Material Options to show",
             default="SIMPLE"
             )
-    mat_run_color_blender = BoolProperty(
+    mat_run_color_blender: BoolProperty(
             name="Run Color Blender",
             default=False,
             description="Generate colors from a color scheme"
             )
-    mmColors = EnumProperty(
+    mmColors: EnumProperty(
             items=(("RANDOM", "Random", "Use random colors"),
                     ("CUSTOM", "Custom", "Use custom colors"),
                     ("BW", "Black/White", "Use Black and White"),
@@ -387,148 +387,148 @@ class TracerProperties(PropertyGroup):
             name="Define a color palette"
             )
     # Custom property for how many keyframes to skip
-    mmSkip = IntProperty(
+    mmSkip: IntProperty(
             name="frames",
             min=1, max=500,
             default=20,
             description="Number of frames between each keyframes"
             )
     # Custom property to enable/disable random order for the
-    mmBoolRandom = BoolProperty(
+    mmBoolRandom: BoolProperty(
             name="Random Order",
             default=False,
             description="Randomize the order of the colors"
             )
     # Custom Color properties
-    mmColor1 = FloatVectorProperty(
+    mmColor1: FloatVectorProperty(
             min=0, max=1,
             default=(0.8, 0.8, 0.8),
             description="Custom Color 1", subtype="COLOR"
             )
-    mmColor2 = FloatVectorProperty(
+    mmColor2: FloatVectorProperty(
             min=0, max=1,
             default=(0.8, 0.8, 0.3),
             description="Custom Color 2",
             subtype="COLOR"
             )
-    mmColor3 = FloatVectorProperty(
+    mmColor3: FloatVectorProperty(
             min=0, max=1,
             default=(0.8, 0.5, 0.6),
             description="Custom Color 3",
             subtype="COLOR"
             )
-    mmColor4 = FloatVectorProperty(
+    mmColor4: FloatVectorProperty(
             min=0, max=1,
             default=(0.2, 0.8, 0.289),
             description="Custom Color 4",
             subtype="COLOR"
             )
-    mmColor5 = FloatVectorProperty(
+    mmColor5: FloatVectorProperty(
             min=0, max=1,
             default=(1.0, 0.348, 0.8),
             description="Custom Color 5",
             subtype="COLOR"
             )
-    mmColor6 = FloatVectorProperty(
+    mmColor6: FloatVectorProperty(
             min=0, max=1,
             default=(0.4, 0.67, 0.8),
             description="Custom Color 6",
             subtype="COLOR"
             )
-    mmColor7 = FloatVectorProperty(
+    mmColor7: FloatVectorProperty(
             min=0, max=1,
             default=(0.66, 0.88, 0.8),
             description="Custom Color 7",
             subtype="COLOR"
             )
-    mmColor8 = FloatVectorProperty(
+    mmColor8: FloatVectorProperty(
             min=0, max=1,
             default=(0.8, 0.38, 0.22),
             description="Custom Color 8",
             subtype="COLOR"
             )
     # BW Color properties
-    bwColor1 = FloatVectorProperty(
+    bwColor1: FloatVectorProperty(
             min=0, max=1,
             default=(0.0, 0.0, 0.0),
             description="Black/White Color 1",
             subtype="COLOR"
             )
-    bwColor2 = FloatVectorProperty(
+    bwColor2: FloatVectorProperty(
             min=0, max=1,
             default=(1.0, 1.0, 1.0),
             description="Black/White Color 2",
             subtype="COLOR"
             )
     # Bright Color properties
-    brightColor1 = FloatVectorProperty(
+    brightColor1: FloatVectorProperty(
             min=0, max=1,
             default=(1.0, 0.0, 0.75),
             description="Bright Color 1",
             subtype="COLOR"
             )
-    brightColor2 = FloatVectorProperty(
+    brightColor2: FloatVectorProperty(
             min=0, max=1,
             default=(0.0, 1.0, 1.0),
             description="Bright Color 2",
             subtype="COLOR"
             )
-    brightColor3 = FloatVectorProperty(
+    brightColor3: FloatVectorProperty(
             min=0, max=1,
             default=(0.0, 1.0, 0.0),
             description="Bright Color 3",
             subtype="COLOR"
             )
-    brightColor4 = FloatVectorProperty(
+    brightColor4: FloatVectorProperty(
             min=0, max=1,
             default=(1.0, 1.0, 0.0),
             description="Bright Color 4", subtype="COLOR"
             )
     # Earth Color Properties
-    earthColor1 = FloatVectorProperty(
+    earthColor1: FloatVectorProperty(
             min=0, max=1,
             default=(0.068, 0.019, 0.014),
             description="Earth Color 1",
             subtype="COLOR"
             )
-    earthColor2 = FloatVectorProperty(
+    earthColor2: FloatVectorProperty(
             min=0, max=1,
             default=(0.089, 0.060, 0.047),
             description="Earth Color 2",
             subtype="COLOR"
             )
-    earthColor3 = FloatVectorProperty(
+    earthColor3: FloatVectorProperty(
             min=0, max=1,
             default=(0.188, 0.168, 0.066),
             description="Earth Color 3",
             subtype="COLOR"
             )
-    earthColor4 = FloatVectorProperty(
+    earthColor4: FloatVectorProperty(
             min=0, max=1,
             default=(0.445, 0.296, 0.065),
             description="Earth Color 4",
             subtype="COLOR"
             )
-    earthColor5 = FloatVectorProperty(
+    earthColor5: FloatVectorProperty(
             min=0, max=1,
             default=(0.745, 0.332, 0.065),
             description="Earth Color 5",
             subtype="COLOR"
             )
     # Green to Blue Color properties
-    greenblueColor1 = FloatVectorProperty(
+    greenblueColor1: FloatVectorProperty(
             min=0, max=1,
             default=(0.296, 0.445, 0.074),
             description="Green/Blue Color 1",
             subtype="COLOR"
             )
-    greenblueColor2 = FloatVectorProperty(
+    greenblueColor2: FloatVectorProperty(
             min=0, max=1,
             default=(0.651, 1.0, 0.223),
             description="Green/Blue Color 2",
             subtype="COLOR"
             )
-    greenblueColor3 = FloatVectorProperty(
+    greenblueColor3: FloatVectorProperty(
             min=0, max=1,
             default=(0.037, 0.047, 0.084),
             description="Green/Blue Color 3",
@@ -558,7 +558,7 @@ class TracerProperties(PropertyGroup):
             ('tool_colorblender', "Color Blender",
              "Pick the color of the created curves", "COLOR", 9),
             ]
-    btrace_toolmenu = EnumProperty(
+    btrace_toolmenu: EnumProperty(
             name="Tools",
             items=btrace_menu_items,
             description="",
diff --git a/camera_turnaround.py b/camera_turnaround.py
index 78fdab60..36393f3a 100644
--- a/camera_turnaround.py
+++ b/camera_turnaround.py
@@ -184,47 +184,47 @@ class RunAction(Operator):
 # ------------------------------------------------------
 class CameraTurnProps(PropertyGroup):
 
-    camera_revol_x = FloatProperty(
+    camera_revol_x: FloatProperty(
             name='X', min=0, max=25,
             default=0, precision=2,
             description='Number total of revolutions in X axis'
             )
-    camera_revol_y = FloatProperty(
+    camera_revol_y: FloatProperty(
             name='Y', min=0, max=25,
             default=0, precision=2,
             description='Number total of revolutions in Y axis'
             )
-    camera_revol_z = FloatProperty(
+    camera_revol_z: FloatProperty(
             name='Z', min=0, max=25,
             default=1, precision=2,
             description='Number total of revolutions in Z axis'
             )
-    inverse_x = BoolProperty(
+    inverse_x: BoolProperty(
             name="-X",
             description="Inverse rotation",
             default=False
             )
-    inverse_y = BoolProperty(
+    inverse_y: BoolProperty(
             name="-Y",
             description="Inverse rotation",
             default=False
             )
-    inverse_z = BoolProperty(
+    inverse_z: BoolProperty(
             name="-Z",
             description="Inverse rotation",
             default=False
             )
-    use_cursor = BoolProperty(
+    use_cursor: BoolProperty(
             name="Use cursor position",
             description="Use cursor position instead of object origin",
             default=False
             )
-    back_forw = BoolProperty(
+    back_forw: BoolProperty(
             name="Back and forward",
             description="Create back and forward animation",
             default=False
             )
-    dolly_zoom = EnumProperty(
+    dolly_zoom: EnumProperty(
             items=(
                 ('0', "None", ""),
                 ('1', "Dolly zoom", ""),
@@ -233,24 +233,24 @@ class CameraTurnProps(PropertyGroup):
             name="Lens Effects",
             description="Create a camera lens movement"
             )
-    camera_from_lens = FloatProperty(
+    camera_from_lens: FloatProperty(
             name="From",
             min=1, max=500, default=35,
             precision=3,
             description="Start lens value"
             )
-    camera_to_lens = FloatProperty(
+    camera_to_lens: FloatProperty(
             name="To",
             min=1, max=500,
             default=35, precision=3,
             description="End lens value"
             )
-    track = BoolProperty(
+    track: BoolProperty(
             name="Create track constraint",
             description="Add a track constraint to the camera",
             default=False
             )
-    reset_cam_anim = BoolProperty(
+    reset_cam_anim: BoolProperty(
             name="Clear Camera",
             description="Clear previous camera animations if there are any\n"
                         "(For instance, previous Dolly Zoom)",
diff --git a/development_api_navigator.py b/development_api_navigator.py
index deae8443..11193984 100644
--- a/development_api_navigator.py
+++ b/development_api_navigator.py
@@ -347,7 +347,7 @@ class Down(ApiNavigator, Operator):
     bl_idname = "api_navigator.down"
     bl_label = "API Navigator Down"
 
-    pointed_module = StringProperty(
+    pointed_module: StringProperty(
                         name="Current Module",
                         default=""
                         )
@@ -405,7 +405,7 @@ class Subscript(ApiNavigator, Operator):
     bl_idname = "api_navigator.subscript"
     bl_label = "API Navigator Subscript"
 
-    subscription = StringProperty(
+    subscription: StringProperty(
                         name="",
                         default=""
                         )
@@ -652,27 +652,27 @@ class ApiNavProps(PropertyGroup):
 
     bpy.context.window_manager.api_nav_props
     """
-    path = StringProperty(
+    path: StringProperty(
             name="Path",
             description="Enter bpy.ops.api_navigator to see the documentation",
             default="bpy"
             )
-    old_path = StringProperty(
+    old_path: StringProperty(
             name="Old Path",
             default=""
             )
-    filters = StringProperty(
+    filters: StringProperty(
             name="Filters",
             description="Filter the resulting modules",
             default=""
             )
-    reduce_to = IntProperty(
+    reduce_to: IntProperty(
             name="Reduce to",
             description="Display a maximum number of x entries by pages",
             default=10,
             min=1
             )
-    pages = IntProperty(
+    pages: IntProperty(
             name="Pages",
             description="Display a Page",
             default=0,
diff --git a/development_edit_operator.py b/development_edit_operator.py
index 458bbf56..257e61be 100644
--- a/development_edit_operator.py
+++ b/development_edit_operator.py
@@ -105,7 +105,7 @@ class EditOperator(Operator):
 
     items = get_ops()
 
-    op = EnumProperty(
+    op: EnumProperty(
             name="Op",
             description="",
             items=items
diff --git a/development_iskeyfree.py b/development_iskeyfree.py
index 5d5600f4..1cb44659 100644
--- a/development_iskeyfree.py
+++ b/development_iskeyfree.py
@@ -275,31 +275,31 @@ def update_data(self, context):
 
 
 class IskeyFreeProperties(PropertyGroup):
-    data = StringProperty(
+    data: StringProperty(
         name="Key", maxlen=32,
         description="Shortcut to verify"
     )
-    use_crtl = BoolProperty(
+    use_crtl: BoolProperty(
         name="Ctrl",
         description="Ctrl key used in shortcut",
         default=False
     )
-    use_alt = BoolProperty(
+    use_alt: BoolProperty(
         name="Alt",
         description="Alt key used in shortcut",
         default=False
     )
-    use_shift = BoolProperty(
+    use_shift: BoolProperty(
         name="Shift",
         description="Shift key used in shortcut",
         default=False
     )
-    use_oskey = BoolProperty(
+    use_oskey: BoolProperty(
         name="OsKey",
         description="Operating system key used in shortcut",
         default=False
     )
-    numpad = EnumProperty(
+    numpad: EnumProperty(
         items=(
             ('NONE', "Select key", ""),
             ("LEFTMOUSE", "LEFTMOUSE", ""),
diff --git a/development_ui_classes.py b/development_ui_classes.py
index f03b7bb5..65d3b1b5 100644
--- a/development_ui_classes.py
+++ b/development_ui_classes.py
@@ -146,7 +146,7 @@ class TEXT_OT_ui_cheat_sheet(Operator):
 
 # Properties
 class text_ui_cheat_props(PropertyGroup):
-    dev_ui_cheat_type = EnumProperty(
+    dev_ui_cheat_type: EnumProperty(
         name="Choose a Type",
         description="Choose what Classes to include in a Text-Block",
         items=(('all', "All", "Print all the types"),
@@ -156,7 +156,7 @@ class text_ui_cheat_props(PropertyGroup):
                ),
         default='all',
     )
-    searchable = BoolProperty(
+    searchable: BoolProperty(
         name="Format searchable",
         description="Generate the list as Python dictionary,\n"
                     "using the format Class: Path",
diff --git a/io_anim_acclaim/__init__.py b/io_anim_acclaim/__init__.py
index 7cada817..bafdb2bc 100644
--- a/io_anim_acclaim/__init__.py
+++ b/io_anim_acclaim/__init__.py
@@ -315,41 +315,41 @@ class AsfImporter(bpy.types.Operator):
     bl_idname = "import_anim.asf"
     bl_label = "Import ASF"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    armature_name = StringProperty(
+    armature_name: StringProperty(
             name="Armature Name", maxlen=63,
             default="Skeleton",
             description="Name of the new object",
             )
-    use_limits = BoolProperty(
+    use_limits: BoolProperty(
             name="Use Limits", default=False,
             description="Create bone constraints for limits",
             )
-    scale = FloatProperty(
+    scale: FloatProperty(
             name="Scale",
             default=1.0,
             description="Scale the armature by this value",
             min=0.0001, max=1000000.0,
             soft_min=0.001, soft_max=100.0,
             )
-    from_inches = BoolProperty(
+    from_inches: BoolProperty(
             name="Convert from inches to metric",
             default=False, description="Scale by 2.54/100",
             )
-    use_rot_x = BoolProperty(
+    use_rot_x: BoolProperty(
             name="Rotate X 90 degrees",
             default=False,
             description="Correct orientation",
             )
-    use_rot_z = BoolProperty(
+    use_rot_z: BoolProperty(
             name="Rotate Z 90 degrees",
             default=False,
             description="Correct orientation",
             )
 
-    filter_glob = StringProperty(default="*.asf", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.asf", options={'HIDDEN'})
 
     def execute(self, context):
         uscale = (0.0254 if self.from_inches else 1.0)
@@ -410,23 +410,23 @@ class AmcImporter(bpy.types.Operator):
     bl_idname = "import_anim.amc"
     bl_label = "Import AMC"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    frame_skip = IntProperty(
+    frame_skip: IntProperty(
             name="Fps divisor",
             default=4,
             # usually the sample rate is 120, so the default 4 gives you 30fps
             description="Frame supersampling factor",
             min=1,
             )
-    use_frame_no = BoolProperty(
+    use_frame_no: BoolProperty(
             name="Use frame numbers",
             default=False,
             description="Offset start of animation according to the source",
             )
 
-    filter_glob = StringProperty(default="*.amc", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.amc", options={'HIDDEN'})
 
     @classmethod
     def poll(cls, context):
@@ -466,16 +466,16 @@ class AmcExporter(bpy.types.Operator):
     bl_idname = "export_anim.amc"
     bl_label = "Export AMC"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH'
             )
-    use_scale = BoolProperty(
+    use_scale: BoolProperty(
             name="Use original armature scale",
             default=True,
             description="Scale movement to original scale if available",
             )
 
-    filter_glob = StringProperty(default="*.amc", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.amc", options={'HIDDEN'})
 
     @classmethod
     def poll(cls, context):
diff --git a/io_anim_c3d/__init__.py b/io_anim_c3d/__init__.py
index e14fcaec..0d4a1b95 100644
--- a/io_anim_c3d/__init__.py
+++ b/io_anim_c3d/__init__.py
@@ -127,78 +127,78 @@ class C3DImporter(bpy.types.Operator):
     bl_idname = "import_anim.c3d"
     bl_label = "Import C3D"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
         subtype='FILE_PATH',
     )
-    Y_up = BoolProperty(
+    Y_up: BoolProperty(
         name="Up vector is Y axis",
         default=False,
         description="Check when the data uses Y-up, uncheck when it uses Z-up",
     )
-    from_inches = BoolProperty(
+    from_inches: BoolProperty(
         name="Convert from inches to meters",
         default=False,
         description="Scale by 2.54/100",
     )
-    scale = FloatProperty(
+    scale: FloatProperty(
         name="Scale",
         default=1.0,
         description="Scale the positions by this value",
         min=0.0000001, max=1000000.0,
         soft_min=0.001, soft_max=100.0,
     )
-    auto_scale = BoolProperty(
+    auto_scale: BoolProperty(
         name="Adjust scale automatically",
         default=False,
         description="Guess correct scale factor",
     )
-    auto_magnitude = BoolProperty(
+    auto_magnitude: BoolProperty(
         name="Adjust scale magnitude",
         default=True,
         description="Automatically adjust scale magnitude",
     )
-    create_armature = BoolProperty(
+    create_armature: BoolProperty(
         name="Create an armature",
         default=True,
         description="Import the markers as bones instead of empties",
     )
-    size = FloatProperty(
+    size: FloatProperty(
         name="Empty or bone size",
         default=.03,
         description="The size of each empty or bone",
         min=0.0001, max=1000000.0,
         soft_min=0.001, soft_max=100.0,
     )
-    x_ray = BoolProperty(
+    x_ray: BoolProperty(
         name="Use X-Ray",
         default=True,
         description="Show the empties or armature over other objects",
     )
-    frame_skip = IntProperty(
+    frame_skip: IntProperty(
         name="Fps divisor",
         default=1,
         description="Frame supersampling factor",
         min=1,
     )
-    use_frame_no = BoolProperty(
+    use_frame_no: BoolProperty(
         name="Use frame numbers",
         default=False,
         description="Offset start of animation according to the source",
     )
-    show_names = BoolProperty(
+    show_names: BoolProperty(
         name="Show Names", default=False,
         description="Show the markers' name",
     )
-    prefix = StringProperty(
+    prefix: StringProperty(
         name="Name Prefix", maxlen=32,
         description="Prefix object names with this",
     )
-    use_existing = BoolProperty(
+    use_existing: BoolProperty(
         name="Use existing empties or armature",
         default=False,
         description="Use previously created homonymous empties or bones",
     )
-    confidence = FloatProperty(
+    confidence: FloatProperty(
         name="Minimum Confidence Level", default=0,
         description="Only consider markers with at least "
                     "this confidence level",
@@ -206,7 +206,7 @@ class C3DImporter(bpy.types.Operator):
         soft_min=-1., soft_max=100.0,
     )
 
-    filter_glob = StringProperty(default="*.c3d;*.csv", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.c3d;*.csv", options={'HIDDEN'})
 
     def find_height(self, ms):
         """
diff --git a/io_anim_nuke_chan/__init__.py b/io_anim_nuke_chan/__init__.py
index 9266c439..f562244e 100644
--- a/io_anim_nuke_chan/__init__.py
+++ b/io_anim_nuke_chan/__init__.py
@@ -74,20 +74,20 @@ class ImportChan(Operator, ImportHelper):
 
     filename_ext = ".chan"
 
-    filter_glob = StringProperty(default="*.chan", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.chan", options={'HIDDEN'})
 
     rotation_order = rotation_order
-    z_up = BoolProperty(
+    z_up: BoolProperty(
             name="Make Z up",
             description="Switch the Y and Z axis",
             default=True)
 
-    sensor_width = FloatProperty(
+    sensor_width: FloatProperty(
             name="Camera sensor width",
             description="Imported camera sensor width",
             default=32.0)
 
-    sensor_height = FloatProperty(
+    sensor_height: FloatProperty(
             name="Camera sensor height",
             description="Imported camera sensor height",
             default=18.0)
@@ -113,8 +113,8 @@ class ExportChan(Operator, ExportHelper):
     bl_label = "Export chan file"
 
     filename_ext = ".chan"
-    filter_glob = StringProperty(default="*.chan", options={'HIDDEN'})
-    y_up = BoolProperty(
+    filter_glob: StringProperty(default="*.chan", options={'HIDDEN'})
+    y_up: BoolProperty(
             name="Make Y up",
             description="Switch the Y and Z axis",
             default=True)
diff --git a/io_convert_image_to_mesh_img/ui/importer.py b/io_convert_image_to_mesh_img/ui/importer.py
index 9ac7371b..45ff3fff 100644
--- a/io_convert_image_to_mesh_img/ui/importer.py
+++ b/io_convert_image_to_mesh_img/ui/importer.py
@@ -38,7 +38,7 @@ class ImportHiRISETerrain(bpy.types.Operator, ImportHelper):
     bl_options = {'UNDO'}
 
     filename_ext = ".img"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
         options={'HIDDEN'},
         default="*.img"
     )
@@ -60,7 +60,7 @@ class ImportHiRISETerrain(bpy.types.Operator, ImportHelper):
     # functions to the property itself because they result in a recursion
     # error. Instead, we use another, hidden, property to store the scaled
     # resolution.
-    dtm_resolution = FloatProperty(
+    dtm_resolution: FloatProperty(
         subtype="PERCENTAGE",
         description=(
             "Percentage scale for terrain model resolution. 100\% loads the "
@@ -78,7 +78,7 @@ class ImportHiRISETerrain(bpy.types.Operator, ImportHelper):
         name="Terrain Model Resolution",
         min=1.0, max=100.0, default=10.0
     )
-    scaled_dtm_resolution = FloatProperty(
+    scaled_dtm_resolution: FloatProperty(
         options={'HIDDEN'},
         name="Scaled Terrain Model Resolution",
         get=(lambda self: self.dtm_resolution / 100)
@@ -96,7 +96,7 @@ class ImportHiRISETerrain(bpy.types.Operator, ImportHelper):
     #    Blender to change the clipping distance to something appropriate for
     #    the DTM, and scales the grid floor to have gridlines 1km apart,
     #    instead of 1m apart.
-    should_setup_viewport = BoolProperty(
+    should_setup_viewport: BoolProperty(
         description=(
             "Set up the Blender screen to try and avoid clipping the DTM "
             "and to make the grid floor larger. *WARNING* This will change "
@@ -107,7 +107,7 @@ class ImportHiRISETerrain(bpy.types.Operator, ImportHelper):
     )
     # 2. Blender's default units are dimensionless. This option instructs
     #    Blender to change its unit's dimension to meters.
-    should_setup_units = BoolProperty(
+    should_setup_units: BoolProperty(
         description=(
             "Set the Blender scene to use meters as its unit"
         ),
diff --git a/io_convert_image_to_mesh_img/ui/terrainpanel.py b/io_convert_image_to_mesh_img/ui/terrainpanel.py
index 93908709..2fc0d0b2 100644
--- a/io_convert_image_to_mesh_img/ui/terrainpanel.py
+++ b/io_convert_image_to_mesh_img/ui/terrainpanel.py
@@ -55,7 +55,7 @@ class TerrainPanel(Panel):
     # functions to the property itself because they result in a recursion
     # error. Instead, we use another, hidden, property to store the scaled
     # resolution.
-    bpy.types.Object.dtm_resolution = FloatProperty(
+    bpy.types.Object.dtm_resolution: FloatProperty(
         subtype="PERCENTAGE",
         name="New Resolution",
         description=(
@@ -70,7 +70,7 @@ class TerrainPanel(Panel):
         ),
         min=1.0, max=100.0, default=10.0
     )
-    bpy.types.Object.scaled_dtm_resolution = FloatProperty(
+    bpy.types.Object.scaled_dtm_resolution: FloatProperty(
         options={'HIDDEN'},
         name="Scaled Terrain Model Resolution",
         get=(lambda self: self.dtm_resolution / 100.0)
diff --git a/io_export_after_effects.py b/io_export_after_effects.py
index d682497d..462efbab 100644
--- a/io_export_after_effects.py
+++ b/io_export_after_effects.py
@@ -696,29 +696,29 @@ class ExportJsx(bpy.types.Operator, ExportHelper):
     bl_idname = "export.jsx"
     bl_label = "Export to Adobe After Effects"
     filename_ext = ".jsx"
-    filter_glob = StringProperty(default="*.jsx", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.jsx", options={'HIDDEN'})
 
-    include_animation = BoolProperty(
+    include_animation: BoolProperty(
             name="Animation",
             description="Animate Exported Cameras and Objects",
             default=True,
             )
-    include_active_cam = BoolProperty(
+    include_active_cam: BoolProperty(
             name="Active Camera",
             description="Include Active Camera",
             default=True,
             )
-    include_selected_cams = BoolProperty(
+    include_selected_cams: BoolProperty(
             name="Selected Cameras",
             description="Add Selected Cameras",
             default=True,
             )
-    include_selected_objects = BoolProperty(
+    include_selected_objects: BoolProperty(
             name="Selected Objects",
             description="Export Selected Objects",
             default=True,
             )
-    include_cam_bundles = BoolProperty(
+    include_cam_bundles: BoolProperty(
             name="Camera 3D Markers",
             description="Include 3D Markers of Camera Motion Solution for selected cameras",
             default=True,
@@ -728,7 +728,7 @@ class ExportJsx(bpy.types.Operator, ExportHelper):
 #            description="Include 3D Markers of Object Motion Solution for selected cameras",
 #            default=True,
 #            )
-    ae_size = FloatProperty(
+    ae_size: FloatProperty(
             name="AE Size",
             description="Size of AE Composition (pixels per 1BU)",
             default=100.0,
diff --git a/io_export_paper_model.py b/io_export_paper_model.py
index 0906eb33..1c471a8f 100644
--- a/io_export_paper_model.py
+++ b/io_export_paper_model.py
@@ -1905,17 +1905,17 @@ class Unfold(bpy.types.Operator):
     bl_label = "Unfold"
     bl_description = "Mark seams so that the mesh can be exported as a paper model"
     bl_options = {'REGISTER', 'UNDO'}
-    edit = bpy.props.BoolProperty(default=False, options={'HIDDEN'})
-    priority_effect_convex = bpy.props.FloatProperty(
+    edit: bpy.props.BoolProperty(default=False, options={'HIDDEN'})
+    priority_effect_convex: bpy.props.FloatProperty(
         name="Priority Convex", description="Priority effect for edges in convex angles",
         default=default_priority_effect['CONVEX'], soft_min=-1, soft_max=10, subtype='FACTOR')
-    priority_effect_concave = bpy.props.FloatProperty(
+    priority_effect_concave: bpy.props.FloatProperty(
         name="Priority Concave", description="Priority effect for edges in concave angles",
         default=default_priority_effect['CONCAVE'], soft_min=-1, soft_max=10, subtype='FACTOR')
-    priority_effect_length = bpy.props.FloatProperty(
+    priority_effect_length: bpy.props.FloatProperty(
         name="Priority Length", description="Priority effect of edge length",
         default=default_priority_effect['LENGTH'], soft_min=-10, soft_max=1, subtype='FACTOR')
-    do_create_uvmap = bpy.props.BoolProperty(
+    do_create_uvmap: bpy.props.BoolProperty(
         name="Create UVMap", description="Create a new UV Map showing the islands and page layout", default=False)
     object = None
 
@@ -2036,69 +2036,69 @@ class PaperModelStyle(bpy.types.PropertyGroup):
         ('LONGDASH', "Long Dashes (-- --)", "Solid line"),
         ('DASHDOT', "Dash-dotted (-- .)", "Solid line")
     ]
-    outer_color = bpy.props.FloatVectorProperty(
+    outer_color: bpy.props.FloatVectorProperty(
         name="Outer Lines", description="Color of net outline",
         default=(0.0, 0.0, 0.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    outer_style = bpy.props.EnumProperty(
+    outer_style: bpy.props.EnumProperty(
         name="Outer Lines Drawing Style", description="Drawing style of net outline",
         default='SOLID', items=line_styles)
-    line_width = bpy.props.FloatProperty(
+    line_width: bpy.props.FloatProperty(
         name="Base Lines Thickness", description="Base thickness of net lines, each actual value is a multiple of this length",
         default=1e-4, min=0, soft_max=5e-3, precision=5, step=1e-2, subtype="UNSIGNED", unit="LENGTH")
-    outer_width = bpy.props.FloatProperty(
+    outer_width: bpy.props.FloatProperty(
         name="Outer Lines Thickness", description="Relative thickness of net outline",
         default=3, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
-    use_outbg = bpy.props.BoolProperty(
+    use_outbg: bpy.props.BoolProperty(
         name="Highlight Outer Lines", description="Add another line below every line to improve contrast",
         default=True)
-    outbg_color = bpy.props.FloatVectorProperty(
+    outbg_color: bpy.props.FloatVectorProperty(
         name="Outer Highlight", description="Color of the highlight for outer lines",
         default=(1.0, 1.0, 1.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    outbg_width = bpy.props.FloatProperty(
+    outbg_width: bpy.props.FloatProperty(
         name="Outer Highlight Thickness", description="Relative thickness of the highlighting lines",
         default=5, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
 
-    convex_color = bpy.props.FloatVectorProperty(
+    convex_color: bpy.props.FloatVectorProperty(
         name="Inner Convex Lines", description="Color of lines to be folded to a convex angle",
         default=(0.0, 0.0, 0.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    convex_style = bpy.props.EnumProperty(
+    convex_style: bpy.props.EnumProperty(
         name="Convex Lines Drawing Style", description="Drawing style of lines to be folded to a convex angle",
         default='DASH', items=line_styles)
-    convex_width = bpy.props.FloatProperty(
+    convex_width: bpy.props.FloatProperty(
         name="Convex Lines Thickness", description="Relative thickness of concave lines",
         default=2, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
-    concave_color = bpy.props.FloatVectorProperty(
+    concave_color: bpy.props.FloatVectorProperty(
         name="Inner Concave Lines", description="Color of lines to be folded to a concave angle",
         default=(0.0, 0.0, 0.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    concave_style = bpy.props.EnumProperty(
+    concave_style: bpy.props.EnumProperty(
         name="Concave Lines Drawing Style", description="Drawing style of lines to be folded to a concave angle",
         default='DASHDOT', items=line_styles)
-    concave_width = bpy.props.FloatProperty(
+    concave_width: bpy.props.FloatProperty(
         name="Concave Lines Thickness", description="Relative thickness of concave lines",
         default=2, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
-    freestyle_color = bpy.props.FloatVectorProperty(
+    freestyle_color: bpy.props.FloatVectorProperty(
         name="Freestyle Edges", description="Color of lines marked as Freestyle Edge",
         default=(0.0, 0.0, 0.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    freestyle_style = bpy.props.EnumProperty(
+    freestyle_style: bpy.props.EnumProperty(
         name="Freestyle Edges Drawing Style", description="Drawing style of Freestyle Edges",
         default='SOLID', items=line_styles)
-    freestyle_width = bpy.props.FloatProperty(
+    freestyle_width: bpy.props.FloatProperty(
         name="Freestyle Edges Thickness", description="Relative thickness of Freestyle edges",
         default=2, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
-    use_inbg = bpy.props.BoolProperty(
+    use_inbg: bpy.props.BoolProperty(
         name="Highlight Inner Lines", description="Add another line below every line to improve contrast",
         default=True)
-    inbg_color = bpy.props.FloatVectorProperty(
+    inbg_color: bpy.props.FloatVectorProperty(
         name="Inner Highlight", description="Color of the highlight for inner lines",
         default=(1.0, 1.0, 1.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    inbg_width = bpy.props.FloatProperty(
+    inbg_width: bpy.props.FloatProperty(
         name="Inner Highlight Thickness", description="Relative thickness of the highlighting lines",
         default=2, min=0, soft_max=10, precision=1, step=10, subtype='FACTOR')
 
-    sticker_fill = bpy.props.FloatVectorProperty(
+    sticker_fill: bpy.props.FloatVectorProperty(
         name="Tabs Fill", description="Fill color of sticking tabs",
         default=(0.9, 0.9, 0.9, 1.0), min=0, max=1, subtype='COLOR', size=4)
-    text_color = bpy.props.FloatVectorProperty(
+    text_color: bpy.props.FloatVectorProperty(
         name="Text Color", description="Color of all text used in the document",
         default=(0.0, 0.0, 0.0, 1.0), min=0, max=1, subtype='COLOR', size=4)
 bpy.utils.register_class(PaperModelStyle)
@@ -2110,25 +2110,25 @@ class ExportPaperModel(bpy.types.Operator):
     bl_idname = "export_mesh.paper_model"
     bl_label = "Export Paper Model"
     bl_description = "Export the selected object's net and optionally bake its texture"
-    filepath = bpy.props.StringProperty(
+    filepath: bpy.props.StringProperty(
         name="File Path", description="Target file to save the SVG", options={'SKIP_SAVE'})
-    filename = bpy.props.StringProperty(
+    filename: bpy.props.StringProperty(
         name="File Name", description="Name of the file", options={'SKIP_SAVE'})
-    directory = bpy.props.StringProperty(
+    directory: bpy.props.StringProperty(
         name="Directory", description="Directory of the file", options={'SKIP_SAVE'})
-    page_size_preset = bpy.props.EnumProperty(
+    page_size_preset: bpy.props.EnumProperty(
         name="Page Size", description="Size of the exported document",
         default='A4', update=page_size_preset_changed, items=global_paper_sizes)
-    output_size_x = bpy.props.FloatProperty(
+    output_size_x: bpy.props.FloatProperty(
         name="Page Width", description="Width of the exported document",
         default=0.210, soft_min=0.105, soft_max=0.841, subtype="UNSIGNED", unit="LENGTH")
-    output_size_y = bpy.props.FloatProperty(
+    output_size_y: bpy.props.FloatProperty(
         name="Page Height", description="Height of the exported document",
         default=0.297, soft_min=0.148, soft_max=1.189, subtype="UNSIGNED", unit="LENGTH")
-    output_margin = bpy.props.FloatProperty(
+    output_margin: bpy.props.FloatProperty(
         name="Page Margin", description="Distance from page borders to the printable area",
         default=0.005, min=0, soft_max=0.1, step=0.1, subtype="UNSIGNED", unit="LENGTH")
-    output_type = bpy.props.EnumProperty(
+    output_type: bpy.props.EnumProperty(
         name="Textures", description="Source of a texture for the model",
         default='NONE', items=[
             ('NONE', "No Texture", "Export the net only"),
@@ -2137,47 +2137,47 @@ class ExportPaperModel(bpy.types.Operator):
             ('RENDER', "Full Render", "Render the material in actual scene illumination"),
             ('SELECTED_TO_ACTIVE', "Selected to Active", "Render all selected surrounding objects as a texture")
         ])
-    do_create_stickers = bpy.props.BoolProperty(
+    do_create_stickers: bpy.props.BoolProperty(
         name="Create Tabs", description="Create gluing tabs around the net (useful for paper)",
         default=True)
-    do_create_numbers = bpy.props.BoolProperty(
+    do_create_numbers: bpy.props.BoolProperty(
         name="Create Numbers", description="Enumerate edges to make it clear which edges should be sticked together",
         default=True)
-    sticker_width = bpy.props.FloatProperty(
+    sticker_width: bpy.props.FloatProperty(
         name="Tabs and Text Size", description="Width of gluing tabs and their numbers",
         default=0.005, soft_min=0, soft_max=0.05, step=0.1, subtype="UNSIGNED", unit="LENGTH")
-    angle_epsilon = bpy.props.FloatProperty(
+    angle_epsilon: bpy.props.FloatProperty(
         name="Hidden Edge Angle", description="Folds with angle below this limit will not be drawn",
         default=pi/360, min=0, soft_max=pi/4, step=0.01, subtype="ANGLE", unit="ROTATION")
-    output_dpi = bpy.props.FloatProperty(
+    output_dpi: bpy.props.FloatProperty(
         name="Resolution (DPI)", description="Resolution of images in pixels per inch",
         default=90, min=1, soft_min=30, soft_max=600, subtype="UNSIGNED")
-    file_format = bpy.props.EnumProperty(
+    file_format: bpy.props.EnumProperty(
         name="Document Format", description="File format of the exported net",
         default='PDF', items=[
             ('PDF', "PDF", "Adobe Portable Document Format 1.4"),
             ('SVG', "SVG", "W3C Scalable Vector Graphics"),
         ])
-    image_packing = bpy.props.EnumProperty(
+    image_packing: bpy.props.EnumProperty(
         name="Image Packing Method", description="Method of attaching baked image(s) to the SVG",
         default='ISLAND_EMBED', items=[
             ('PAGE_LINK', "Single Linked", "Bake one image per page of output and save it separately"),
             ('ISLAND_LINK', "Linked", "Bake images separately for each island and save them in a directory"),
             ('ISLAND_EMBED', "Embedded", "Bake images separately for each island and embed them into the SVG")
         ])
-    scale = bpy.props.FloatProperty(
+    scale: bpy.props.FloatProperty(
         name="Scale", description="Divisor of all dimensions when exporting",
         default=1, soft_min=1.0, soft_max=10000.0, step=100, subtype='UNSIGNED', precision=1)
-    do_create_uvmap = bpy.props.BoolProperty(
+    do_create_uvmap: bpy.props.BoolProperty(
         name="Create UVMap", description="Create a new UV Map showing the islands and page layout",
         default=False, options={'SKIP_SAVE'})
-    ui_expanded_document = bpy.props.BoolProperty(
+    ui_expanded_document: bpy.props.BoolProperty(
         name="Show Document Settings Expanded", description="Shows the box 'Document Settings' expanded in user interface",
         default=True, options={'SKIP_SAVE'})
-    ui_expanded_style = bpy.props.BoolProperty(
+    ui_expanded_style: bpy.props.BoolProperty(
         name="Show Style Settings Expanded", description="Shows the box 'Colors and Style' expanded in user interface",
         default=False, options={'SKIP_SAVE'})
-    style = bpy.props.PointerProperty(type=PaperModelStyle)
+    style: bpy.props.PointerProperty(type=PaperModelStyle)
 
     unfolder = None
     largest_island_ratio = 0
@@ -2524,48 +2524,48 @@ def island_item_changed(self, context):
 
 
 class FaceList(bpy.types.PropertyGroup):
-    id = bpy.props.IntProperty(name="Face ID")
+    id: bpy.props.IntProperty(name="Face ID")
 bpy.utils.register_class(FaceList)
 
 
 class IslandList(bpy.types.PropertyGroup):
-    faces = bpy.props.CollectionProperty(
+    faces: bpy.props.CollectionProperty(
         name="Faces", description="Faces belonging to this island", type=FaceList)
-    label = bpy.props.StringProperty(
+    label: bpy.props.StringProperty(
         name="Label", description="Label on this island",
         default="", update=label_changed)
-    abbreviation = bpy.props.StringProperty(
+    abbreviation: bpy.props.StringProperty(
         name="Abbreviation", description="Three-letter label to use when there is not enough space",
         default="", update=island_item_changed)
-    auto_label = bpy.props.BoolProperty(
+    auto_label: bpy.props.BoolProperty(
         name="Auto Label", description="Generate the label automatically",
         default=True, update=island_item_changed)
-    auto_abbrev = bpy.props.BoolProperty(
+    auto_abbrev: bpy.props.BoolProperty(
         name="Auto Abbreviation", description="Generate the abbreviation automatically",
         default=True, update=island_item_changed)
 bpy.utils.register_class(IslandList)
 
 
 class PaperModelSettings(bpy.types.PropertyGroup):
-    display_islands = bpy.props.BoolProperty(
+    display_islands: bpy.props.BoolProperty(
         name="Highlight selected island", description="Highlight faces corresponding to the selected island in the 3D View",
         options={'SKIP_SAVE'}, update=display_islands_changed)
-    islands_alpha = bpy.props.FloatProperty(
+    islands_alpha: bpy.props.FloatProperty(
         name="Opacity", description="Opacity of island highlighting",
         min=0.0, max=1.0, default=0.3)
-    limit_by_page = bpy.props.BoolProperty(
+    limit_by_page: bpy.props.BoolProperty(
         name="Limit Island Size", description="Do not create islands larger than given dimensions",
         default=False, update=page_size_preset_changed)
-    page_size_preset = bpy.props.EnumProperty(
+    page_size_preset: bpy.props.EnumProperty(
         name="Page Size", description="Maximal size of an island",
         default='A4', update=page_size_preset_changed, items=global_paper_sizes)
-    output_size_x = bpy.props.FloatProperty(
+    output_size_x: bpy.props.FloatProperty(
         name="Width", description="Maximal width of an island",
         default=0.2, soft_min=0.105, soft_max=0.841, subtype="UNSIGNED", unit="LENGTH")
-    output_size_y = bpy.props.FloatProperty(
+    output_size_y: bpy.props.FloatProperty(
         name="Height", description="Maximal height of an island",
         default=0.29, soft_min=0.148, soft_max=1.189, subtype="UNSIGNED", unit="LENGTH")
-    scale = bpy.props.FloatProperty(
+    scale: bpy.props.FloatProperty(
         name="Scale", description="Divisor of all dimensions when exporting",
         default=1, soft_min=1.0, soft_max=10000.0, step=100, subtype='UNSIGNED', precision=1)
 bpy.utils.register_class(PaperModelSettings)
diff --git a/io_export_unreal_psk_psa.py b/io_export_unreal_psk_psa.py
index 987bf2a6..8428ea87 100644
--- a/io_export_unreal_psk_psa.py
+++ b/io_export_unreal_psk_psa.py
@@ -2282,17 +2282,17 @@ class OBJECT_OT_UTRebuildArmature(Operator):
 
 
 class UDKActionSetListPG(PropertyGroup):
-    bool = BoolProperty(default=False)
-    string = StringProperty()
-    actionname = StringProperty()
-    bmatch = BoolProperty(
+    bool: BoolProperty(default=False)
+    string: StringProperty()
+    actionname: StringProperty()
+    bmatch: BoolProperty(
             default=False,
             name="Match",
             options={"HIDDEN"},
             description="This check against bone names and action group "
                         "names matches and override boolean if true"
             )
-    bexport = BoolProperty(
+    bexport: BoolProperty(
             default=False,
             name="Export",
             description="Check this to export the animation"
@@ -2307,21 +2307,21 @@ class UL_UDKActionSetList(UIList):
 
 
 class UDKObjListPG(PropertyGroup):
-    bool = BoolProperty(default=False)
-    string = StringProperty()
-    bexport = BoolProperty(
+    bool: BoolProperty(default=False)
+    string: StringProperty()
+    bexport: BoolProperty(
             default=False,
             name="Export",
             options={"HIDDEN"},
             description="This will be ignore when exported"
             )
-    bselect = BoolProperty(
+    bselect: BoolProperty(
             default=False,
             name="Select",
             options={"HIDDEN"},
             description="This will be ignore when exported"
             )
-    otype = StringProperty(
+    otype: StringProperty(
             name="Type",
             description="This will be ignore when exported"
             )
@@ -2335,23 +2335,23 @@ class UL_UDKObjList(UIList):
 
 
 class UDKMeshListPG(PropertyGroup):
-    bool = BoolProperty(
+    bool: BoolProperty(
             default=False
             )
-    string = StringProperty()
-    bexport = BoolProperty(
+    string: StringProperty()
+    bexport: BoolProperty(
             default=False,
             name="Export",
             options={"HIDDEN"},
             description="This object will be export when true"
             )
-    bselect = BoolProperty(
+    bselect: BoolProperty(
             default=False,
             name="Select",
             options={"HIDDEN"},
             description="Make sure you have Mesh is parent to Armature"
             )
-    otype = StringProperty(
+    otype: StringProperty(
             name="Type",
             description="This will be ignore when exported"
             )
@@ -2365,21 +2365,21 @@ class UL_UDKMeshList(UIList):
 
 
 class UDKArmListPG(PropertyGroup):
-    bool = BoolProperty(default=False)
-    string = StringProperty()
-    bexport = BoolProperty(
+    bool: BoolProperty(default=False)
+    string: StringProperty()
+    bexport: BoolProperty(
             default=False,
             name="Export",
             options={"HIDDEN"},
             description="This will be ignore when exported"
             )
-    bselect = BoolProperty(
+    bselect: BoolProperty(
             default=False,
             name="Select",
             options={"HIDDEN"},
             description="This will be ignore when exported"
             )
-    otype = StringProperty(
+    otype: StringProperty(
             name="Type",
             description="This will be ignore when exported"
             )
@@ -2547,7 +2547,7 @@ class OBJECT_OT_UDKObjUpdate(Operator):
     bl_idname = "object.selobjectpdate"
     bl_label = "Update Object(s)"
 
-    actionname = bpy.props.StringProperty()
+    actionname: bpy.props.StringProperty()
 
     def execute(self, context):
         udkupdateobjects()
@@ -2646,7 +2646,7 @@ class OBJECT_OT_ActionSetAnimUpdate(Operator):
     bl_idname = "action.setanimupdate"
     bl_label = "Update Action Set(s)"
 
-    actionname = bpy.props.StringProperty()
+    actionname: bpy.props.StringProperty()
 
     def execute(self, context):
         my_sett = bpy.context.scene.udkas_list
@@ -2737,20 +2737,20 @@ class ExportUDKAnimData(Operator):
     # List of operator properties, the attributes will be assigned
     # to the class instance from the operator settings before calling.
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.psk;*.psa",
             options={'HIDDEN'},
             )
-    udk_option_scale = FloatProperty(
+    udk_option_scale: FloatProperty(
             name="UDK Scale",
             description="In case you don't want to scale objects manually - "
                         "This will just scale position when on export for the skeleton mesh and animation data",
             default=1
             )
-    udk_option_rebuildobjects = BoolProperty(
+    udk_option_rebuildobjects: BoolProperty(
             name="Rebuild Objects",
             description="In case of deform skeleton mesh and animations data - "
                         "This will rebuild objects from raw format on export when checked",
@@ -2843,7 +2843,7 @@ class PskAddonPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="File I/O",
diff --git a/io_import_gimp_image_to_scene.py b/io_import_gimp_image_to_scene.py
index 94d496e3..a79a5844 100644
--- a/io_import_gimp_image_to_scene.py
+++ b/io_import_gimp_image_to_scene.py
@@ -554,31 +554,31 @@ class GIMPImageToScene(bpy.types.Operator):
     bl_description = "Imports GIMP multilayer image files into 3D Scenes"
     bl_options = {'REGISTER', 'UNDO'}
 
-    filename = StringProperty(name="File Name",
+    filename: StringProperty(name="File Name",
         description="Name of the file")
-    directory = StringProperty(name="Directory",
+    directory: StringProperty(name="Directory",
         description="Directory of the file")
 
-    LayerViewers = BoolProperty(name="Layer Viewers",
+    LayerViewers: BoolProperty(name="Layer Viewers",
         description="Add Viewer nodes to each Render Layer node",
         default=True)
 
-    MixerViewers = BoolProperty(name="Mixer Viewers",
+    MixerViewers: BoolProperty(name="Mixer Viewers",
         description="Add Viewer nodes to each Mix node",
         default=True)
 
-    AlphaMode = EnumProperty(name="Alpha Mode",
+    AlphaMode: EnumProperty(name="Alpha Mode",
         description="Representation of alpha information in the RGBA pixels",
         items=(
             ('STRAIGHT', 'Texture Alpha Factor', 'Transparent RGB and alpha pixels are unmodified'),
             ('PREMUL', 'Material Alpha Value', 'Transparent RGB pixels are multiplied by the alpha channel')),
         default='STRAIGHT')
 
-    ShadelessMats = BoolProperty(name="Shadeless Material",
+    ShadelessMats: BoolProperty(name="Shadeless Material",
         description="Set Materials as Shadeless",
         default=True)
 
-    OpacityMode = EnumProperty(name="Opacity Mode",
+    OpacityMode: EnumProperty(name="Opacity Mode",
         description="Layer Opacity management",
         items=(
             ('TEX', 'Texture Alpha Factor', ''),
@@ -587,24 +587,24 @@ class GIMPImageToScene(bpy.types.Operator):
             ('BAKE', 'Baked in Image Alpha', '')),
         default='TEX')
 
-    SetCamera = BoolProperty(name="Set Camera",
+    SetCamera: BoolProperty(name="Set Camera",
         description="Create an Ortho Camera matching image resolution",
         default=True)
 
-    SetupCompo = BoolProperty(name="Setup Node Compositing",
+    SetupCompo: BoolProperty(name="Setup Node Compositing",
         description="Create a compositing node setup (will delete existing nodes)",
         default=False)
 
-    GroupUntagged = BoolProperty(name="Group Untagged",
+    GroupUntagged: BoolProperty(name="Group Untagged",
         description="Layers with no tag go to a single Render Layer",
         default=False)
 
-    LayerOffset = FloatProperty(name="Layer Separation",
+    LayerOffset: FloatProperty(name="Layer Separation",
         description="Distance between each 3D Layer in the Z axis",
         min=0,
         default=0.50)
 
-    LayerScale = FloatProperty(name="Layer Scale",
+    LayerScale: FloatProperty(name="Layer Scale",
         description="Scale pixel resolution by Blender units",
         min=0,
         default=0.01)
diff --git a/io_import_scene_lwo.py b/io_import_scene_lwo.py
index be5f55aa..14109366 100644
--- a/io_import_scene_lwo.py
+++ b/io_import_scene_lwo.py
@@ -1222,12 +1222,12 @@ class IMPORT_OT_lwo(bpy.types.Operator):
     bl_description= "Import a LightWave Object file"
     bl_options= {'REGISTER', 'UNDO'}
 
-    filepath= StringProperty(name="File Path", description="Filepath used for importing the LWO file", maxlen=1024, default="")
+    filepath: StringProperty(name="File Path", description="Filepath used for importing the LWO file", maxlen=1024, default="")
 
-    ADD_SUBD_MOD= BoolProperty(name="Apply SubD Modifier", description="Apply the Subdivision Surface modifier to layers with Subpatches", default=True)
-    LOAD_HIDDEN= BoolProperty(name="Load Hidden Layers", description="Load object layers that have been marked as hidden", default=False)
-    SKEL_TO_ARM= BoolProperty(name="Create Armature", description="Create an armature from an embedded Skelegon rig", default=True)
-    USE_EXISTING_MATERIALS= BoolProperty(name="Use Existing Materials", description="Use existing materials if a material by that name already exists", default=False)
+    ADD_SUBD_MOD: BoolProperty(name="Apply SubD Modifier", description="Apply the Subdivision Surface modifier to layers with Subpatches", default=True)
+    LOAD_HIDDEN: BoolProperty(name="Load Hidden Layers", description="Load object layers that have been marked as hidden", default=False)
+    SKEL_TO_ARM: BoolProperty(name="Create Armature", description="Create an armature from an embedded Skelegon rig", default=True)
+    USE_EXISTING_MATERIALS: BoolProperty(name="Use Existing Materials", description="Use existing materials if a material by that name already exists", default=False)
 
     def execute(self, context):
         load_lwo(self.filepath,
diff --git a/io_import_scene_unreal_psa_psk.py b/io_import_scene_unreal_psa_psk.py
index d6896f6d..daea302e 100644
--- a/io_import_scene_unreal_psa_psk.py
+++ b/io_import_scene_unreal_psa_psk.py
@@ -1044,10 +1044,10 @@ class IMPORT_OT_psa(bpy.types.Operator):
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.psa",
             options={'HIDDEN'},
             )
diff --git a/io_mesh_pdb/__init__.py b/io_mesh_pdb/__init__.py
index 4e731cf5..05193604 100644
--- a/io_mesh_pdb/__init__.py
+++ b/io_mesh_pdb/__init__.py
@@ -74,87 +74,87 @@ class ImportPDB(Operator, ImportHelper):
     bl_options = {'PRESET', 'UNDO'}
 
     filename_ext = ".pdb"
-    filter_glob  = StringProperty(default="*.pdb", options={'HIDDEN'},)
+    filter_glob: StringProperty(default="*.pdb", options={'HIDDEN'},)
 
-    use_center = BoolProperty(
+    use_center: BoolProperty(
         name = "Object to origin", default=True,
         description = "Put the object into the global origin")
-    use_camera = BoolProperty(
+    use_camera: BoolProperty(
         name="Camera", default=False,
         description="Do you need a camera?")
-    use_light = BoolProperty(
+    use_light: BoolProperty(
         name="Lamp", default=False,
         description = "Do you need a lamp?")
-    ball = EnumProperty(
+    ball: EnumProperty(
         name="Type of ball",
         description="Choose ball",
         items=(('0', "NURBS", "NURBS balls"),
                ('1', "Mesh" , "Mesh balls"),
                ('2', "Meta" , "Metaballs")),
                default='0',)
-    mesh_azimuth = IntProperty(
+    mesh_azimuth: IntProperty(
         name = "Azimuth", default=32, min=1,
         description = "Number of sectors (azimuth)")
-    mesh_zenith = IntProperty(
+    mesh_zenith: IntProperty(
         name = "Zenith", default=32, min=1,
         description = "Number of sectors (zenith)")
-    scale_ballradius = FloatProperty(
+    scale_ballradius: FloatProperty(
         name = "Balls", default=1.0, min=0.0001,
         description = "Scale factor for all atom radii")
-    scale_distances = FloatProperty (
+    scale_distances: FloatProperty (
         name = "Distances", default=1.0, min=0.0001,
         description = "Scale factor for all distances")
-    atomradius = EnumProperty(
+    atomradius: EnumProperty(
         name="Type",
         description="Choose type of atom radius",
         items=(('0', "Pre-defined", "Use pre-defined radius"),
                ('1', "Atomic", "Use atomic radius"),
                ('2', "van der Waals", "Use van der Waals radius")),
                default='0',)
-    use_sticks = BoolProperty(
+    use_sticks: BoolProperty(
         name="Use sticks", default=True,
         description="Do you want to display the sticks?")
-    use_sticks_type = EnumProperty(
+    use_sticks_type: EnumProperty(
         name="Type",
         description="Choose type of stick",
         items=(('0', "Dupliverts", "Use dupliverts structures"),
                ('1', "Skin", "Use skin and subdivision modifier"),
                ('2', "Normal", "Use simple cylinders")),
                default='0',)
-    sticks_subdiv_view  = IntProperty(
+    sticks_subdiv_view: IntProperty(
         name = "SubDivV", default=2, min=1,
         description="Number of subdivisions (view)")
-    sticks_subdiv_render  = IntProperty(
+    sticks_subdiv_render: IntProperty(
         name = "SubDivR", default=2, min=1,
         description="Number of subdivisions (render)")
-    sticks_sectors = IntProperty(
+    sticks_sectors: IntProperty(
         name = "Sector", default=20, min=1,
         description="Number of sectors of a stick")
-    sticks_radius = FloatProperty(
+    sticks_radius: FloatProperty(
         name = "Radius", default=0.2, min=0.0001,
         description ="Radius of a stick")
-    sticks_unit_length = FloatProperty(
+    sticks_unit_length: FloatProperty(
         name = "Unit", default=0.05, min=0.0001,
         description = "Length of the unit of a stick in Angstrom")
-    use_sticks_color = BoolProperty(
+    use_sticks_color: BoolProperty(
         name="Color", default=True,
         description="The sticks appear in the color of the atoms")
-    use_sticks_smooth = BoolProperty(
+    use_sticks_smooth: BoolProperty(
         name="Smooth", default=True,
         description="The sticks are round (sectors are not visible)")
-    use_sticks_bonds = BoolProperty(
+    use_sticks_bonds: BoolProperty(
         name="Bonds", default=False,
         description="Show double and triple bonds")
-    sticks_dist = FloatProperty(
+    sticks_dist: FloatProperty(
         name="", default = 1.1, min=1.0, max=3.0,
         description="Distance between sticks measured in stick diameter")
-    use_sticks_one_object = BoolProperty(
+    use_sticks_one_object: BoolProperty(
         name="One object", default=True,
         description="All sticks are one object")
-    use_sticks_one_object_nr = IntProperty(
+    use_sticks_one_object_nr: IntProperty(
         name = "No.", default=200, min=10,
         description="Number of sticks to be grouped at once")
-    datafile = StringProperty(
+    datafile: StringProperty(
         name = "", description="Path to your custom data file",
         maxlen = 256, default = "", subtype='FILE_PATH')
 
@@ -268,10 +268,10 @@ class ExportPDB(Operator, ExportHelper):
     bl_label  = "Export Protein Data Bank(*.pdb)"
     filename_ext = ".pdb"
 
-    filter_glob  = StringProperty(
+    filter_glob: StringProperty(
         default="*.pdb", options={'HIDDEN'},)
 
-    atom_pdb_export_type = EnumProperty(
+    atom_pdb_export_type: EnumProperty(
         name="Type of Objects",
         description="Choose type of objects",
         items=(('0', "All", "Export all active objects"),
diff --git a/io_mesh_raw/__init__.py b/io_mesh_raw/__init__.py
index 5ad4c6f5..9219efa2 100644
--- a/io_mesh_raw/__init__.py
+++ b/io_mesh_raw/__init__.py
@@ -51,10 +51,10 @@ class RawImporter(bpy.types.Operator):
     bl_label = "Import RAW"
     bl_options = {'UNDO'}
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    filter_glob = StringProperty(default="*.raw", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.raw", options={'HIDDEN'})
 
     def execute(self, context):
         from . import import_raw
@@ -73,14 +73,14 @@ class RawExporter(bpy.types.Operator, ExportHelper):
     bl_label = "Export RAW"
 
     filename_ext = ".raw"
-    filter_glob = StringProperty(default="*.raw", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.raw", options={'HIDDEN'})
 
-    apply_modifiers = BoolProperty(
+    apply_modifiers: BoolProperty(
             name="Apply Modifiers",
             description="Use transformed mesh data from each object",
             default=True,
             )
-    triangulate = BoolProperty(
+    triangulate: BoolProperty(
             name="Triangulate",
             description="Triangulate quads",
             default=True,
diff --git a/io_online_sketchfab/__init__.py b/io_online_sketchfab/__init__.py
index fa1cefdd..222be113 100644
--- a/io_online_sketchfab/__init__.py
+++ b/io_online_sketchfab/__init__.py
@@ -340,16 +340,16 @@ class VIEW3D_PT_sketchfab(Panel):
 
 # property group containing all properties for the user interface
 class SketchfabProps(PropertyGroup):
-    description = StringProperty(
+    description: StringProperty(
             name="Description",
             description="Description of the model (optional)",
             default="")
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="Filepath",
             description="internal use",
             default="",
             )
-    lamps = EnumProperty(
+    lamps: EnumProperty(
             name="Lamps",
             items=(('ALL', "All", "Export all lamps in the file"),
                    ('NONE', "None", "Don't export any lamps"),
@@ -357,35 +357,35 @@ class SketchfabProps(PropertyGroup):
             description="Determines which lamps are exported",
             default='ALL',
             )
-    models = EnumProperty(
+    models: EnumProperty(
             name="Models",
             items=(('ALL', "All", "Export all meshes in the file"),
                    ('SELECTION', "Selection", "Only export selected meshes")),
             description="Determines which meshes are exported",
             default='SELECTION',
             )
-    private = BoolProperty(
+    private: BoolProperty(
             name="Private",
             description="Upload as private (requires a pro account)",
             default=False,
             )
-    password = StringProperty(
+    password: StringProperty(
             name="Password",
             description="Password-protect your model (requires a pro account)",
             default="",
             subtype="PASSWORD"
             )
-    tags = StringProperty(
+    tags: StringProperty(
             name="Tags",
             description="List of tags, separated by spaces (optional)",
             default="",
             )
-    title = StringProperty(
+    title: StringProperty(
             name="Title",
             description="Title of the model (determined automatically if left empty)",
             default="",
             )
-    token = StringProperty(
+    token: StringProperty(
             name="Api Key",
             description="You can find this on your dashboard at the Sketchfab website",
             default="",
@@ -398,7 +398,7 @@ class SketchfabEmailToken(Operator):
     bl_idname = "wm.sketchfab_email_token"
     bl_label = "Enter your email to get a sketchfab token"
 
-    email = StringProperty(
+    email: StringProperty(
             name="Email",
             default="you@example.com",
             )
@@ -463,7 +463,7 @@ class SfabAddonPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="File I/O",
diff --git a/io_scene_3ds/__init__.py b/io_scene_3ds/__init__.py
index 4daa4c29..b2ea526e 100644
--- a/io_scene_3ds/__init__.py
+++ b/io_scene_3ds/__init__.py
@@ -63,9 +63,9 @@ class Import3DS(bpy.types.Operator, ImportHelper):
     bl_options = {'UNDO'}
 
     filename_ext = ".3ds"
-    filter_glob = StringProperty(default="*.3ds", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.3ds", options={'HIDDEN'})
 
-    constrain_size = FloatProperty(
+    constrain_size: FloatProperty(
             name="Size Constraint",
             description="Scale the model by 10 until it reaches the "
                         "size constraint (0 to disable)",
@@ -73,13 +73,13 @@ class Import3DS(bpy.types.Operator, ImportHelper):
             soft_min=0.0, soft_max=1000.0,
             default=10.0,
             )
-    use_image_search = BoolProperty(
+    use_image_search: BoolProperty(
             name="Image Search",
             description="Search subdirectories for any associated images "
                         "(Warning, may be slow)",
             default=True,
             )
-    use_apply_transform = BoolProperty(
+    use_apply_transform: BoolProperty(
             name="Apply Transform",
             description="Workaround for object transformations "
                         "importing incorrectly",
@@ -109,12 +109,12 @@ class Export3DS(bpy.types.Operator, ExportHelper):
     bl_label = 'Export 3DS'
 
     filename_ext = ".3ds"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.3ds",
             options={'HIDDEN'},
             )
 
-    use_selection = BoolProperty(
+    use_selection: BoolProperty(
             name="Selection Only",
             description="Export selected objects only",
             default=False,
diff --git a/io_scene_ms3d/ms3d_ui.py b/io_scene_ms3d/ms3d_ui.py
index c483df8a..c6db5d50 100644
--- a/io_scene_ms3d/ms3d_ui.py
+++ b/io_scene_ms3d/ms3d_ui.py
@@ -267,12 +267,12 @@ class Ms3dImportOperator(Operator, ImportHelper):
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             options={'HIDDEN', }
             )
 
-    verbose = EnumProperty(
+    verbose: EnumProperty(
             name=ms3d_str['PROP_NAME_VERBOSE'],
             description=ms3d_str['PROP_DESC_VERBOSE'],
             items=( (Ms3dUi.VERBOSE_MODE_NONE,
@@ -291,13 +291,13 @@ class Ms3dImportOperator(Operator, ImportHelper):
             default=Ms3dUi.PROP_DEFAULT_VERBOSE,
             )
 
-    use_animation = BoolProperty(
+    use_animation: BoolProperty(
             name=ms3d_str['PROP_NAME_USE_ANIMATION'],
             description=ms3d_str['PROP_DESC_USE_ANIMATION'],
             default=Ms3dUi.PROP_DEFAULT_USE_ANIMATION,
             )
 
-    rotation_mode = EnumProperty(
+    rotation_mode: EnumProperty(
             name=ms3d_str['PROP_NAME_ROTATION_MODE'],
             description=ms3d_str['PROP_DESC_ROTATION_MODE'],
             items=( (Ms3dUi.PROP_ITEM_ROTATION_MODE_EULER,
@@ -310,13 +310,13 @@ class Ms3dImportOperator(Operator, ImportHelper):
             default=Ms3dUi.PROP_DEFAULT_ANIMATION_ROTATION,
             )
 
-    use_joint_size = BoolProperty(
+    use_joint_size: BoolProperty(
             name=ms3d_str['PROP_NAME_USE_JOINT_SIZE'],
             description=ms3d_str['PROP_DESC_USE_JOINT_SIZE'],
             default=Ms3dUi.PROP_DEFAULT_USE_JOINT_SIZE,
             )
 
-    joint_size = FloatProperty(
+    joint_size: FloatProperty(
             name=ms3d_str['PROP_NAME_IMPORT_JOINT_SIZE'],
             description=ms3d_str['PROP_DESC_IMPORT_JOINT_SIZE'],
             min=Ms3dUi.PROP_JOINT_SIZE_MIN, max=Ms3dUi.PROP_JOINT_SIZE_MAX,
@@ -327,24 +327,24 @@ class Ms3dImportOperator(Operator, ImportHelper):
             #options={'HIDDEN', },
             )
 
-    use_joint_to_bones = BoolProperty(
+    use_joint_to_bones: BoolProperty(
             name=ms3d_str['PROP_NAME_JOINT_TO_BONES'],
             description=ms3d_str['PROP_DESC_JOINT_TO_BONES'],
             default=Ms3dUi.PROP_DEFAULT_JOINT_TO_BONES,
             )
 
-    use_extended_normal_handling = BoolProperty(
+    use_extended_normal_handling: BoolProperty(
             name=ms3d_str['PROP_NAME_EXTENDED_NORMAL_HANDLING'],
             description=ms3d_str['PROP_DESC_EXTENDED_NORMAL_HANDLING'],
             default=Ms3dUi.PROP_DEFAULT_EXTENDED_NORMAL_HANDLING,
             )
 
-    filename_ext = StringProperty(
+    filename_ext: StringProperty(
             default=ms3d_str['FILE_EXT'],
             options={'HIDDEN', }
             )
 
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default=ms3d_str['FILE_FILTER'],
             options={'HIDDEN', }
             )
@@ -434,12 +434,12 @@ class Ms3dExportOperator(Operator, ExportHelper):
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             options={'HIDDEN', }
             )
 
-    verbose = EnumProperty(
+    verbose: EnumProperty(
             name=ms3d_str['PROP_NAME_VERBOSE'],
             description=ms3d_str['PROP_DESC_VERBOSE'],
             items=( (Ms3dUi.VERBOSE_MODE_NONE,
@@ -458,31 +458,31 @@ class Ms3dExportOperator(Operator, ExportHelper):
             default=Ms3dUi.PROP_DEFAULT_VERBOSE,
             )
 
-    use_blender_names = BoolProperty(
+    use_blender_names: BoolProperty(
             name=ms3d_str['PROP_NAME_USE_BLENDER_NAMES'],
             description=ms3d_str['PROP_DESC_USE_BLENDER_NAMES'],
             default=Ms3dUi.PROP_DEFAULT_USE_BLENDER_NAMES,
             )
 
-    use_blender_materials = BoolProperty(
+    use_blender_materials: BoolProperty(
             name=ms3d_str['PROP_NAME_USE_BLENDER_MATERIALS'],
             description=ms3d_str['PROP_DESC_USE_BLENDER_MATERIALS'],
             default=Ms3dUi.PROP_DEFAULT_USE_BLENDER_MATERIALS,
             )
 
-    apply_transform = BoolProperty(
+    apply_transform: BoolProperty(
             name=ms3d_str['PROP_NAME_APPLY_TRANSFORM'],
             description=ms3d_str['PROP_DESC_APPLY_TRANSFORM'],
             default=Ms3dUi.PROP_DEFAULT_APPLY_TRANSFORM,
             )
 
-    apply_modifiers = BoolProperty(
+    apply_modifiers: BoolProperty(
             name=ms3d_str['PROP_NAME_APPLY_MODIFIERS'],
             description=ms3d_str['PROP_DESC_APPLY_MODIFIERS'],
             default=Ms3dUi.PROP_DEFAULT_APPLY_MODIFIERS,
             )
 
-    apply_modifiers_mode =  EnumProperty(
+    apply_modifiers_mode:  EnumProperty(
             name=ms3d_str['PROP_NAME_APPLY_MODIFIERS_MODE'],
             description=ms3d_str['PROP_DESC_APPLY_MODIFIERS_MODE'],
             items=( (Ms3dUi.PROP_ITEM_APPLY_MODIFIERS_MODE_VIEW,
@@ -495,41 +495,41 @@ class Ms3dExportOperator(Operator, ExportHelper):
             default=Ms3dUi.PROP_DEFAULT_APPLY_MODIFIERS_MODE,
             )
 
-    use_animation = BoolProperty(
+    use_animation: BoolProperty(
             name=ms3d_str['PROP_NAME_USE_ANIMATION'],
             description=ms3d_str['PROP_DESC_USE_ANIMATION'],
             default=Ms3dUi.PROP_DEFAULT_USE_ANIMATION,
             )
 
-    normalize_weights = BoolProperty(
+    normalize_weights: BoolProperty(
             name=ms3d_str['PROP_NAME_NORMALIZE_WEIGHTS'],
             description=ms3d_str['PROP_DESC_NORMALIZE_WEIGHTS'],
             default=Ms3dUi.PROP_DEFAULT_NORMALIZE_WEIGHTS,
             )
 
-    shrink_to_keys = BoolProperty(
+    shrink_to_keys: BoolProperty(
             name=ms3d_str['PROP_NAME_SHRINK_TO_KEYS'],
             description=ms3d_str['PROP_DESC_SHRINK_TO_KEYS'],
             default=Ms3dUi.PROP_DEFAULT_SHRINK_TO_KEYS,
             )
 
-    bake_each_frame = BoolProperty(
+    bake_each_frame: BoolProperty(
             name=ms3d_str['PROP_NAME_BAKE_EACH_FRAME'],
             description=ms3d_str['PROP_DESC_BAKE_EACH_FRAME'],
             default=Ms3dUi.PROP_DEFAULT_BAKE_EACH_FRAME,
             )
 
-    check_existing = BoolProperty(
+    check_existing: BoolProperty(
             default=False,
             options={'HIDDEN', }
             )
 
-    filename_ext = StringProperty(
+    filename_ext: StringProperty(
             default=ms3d_str['FILE_EXT'],
             options={'HIDDEN', }
             )
 
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default=ms3d_str['FILE_FILTER'],
             options={'HIDDEN', }
             )
@@ -646,7 +646,7 @@ class Ms3dSetSmoothingGroupOperator(Operator):
     bl_label = ms3d_str['BL_LABEL_SMOOTHING_GROUP_OPERATOR']
     bl_options = {'UNDO', 'INTERNAL', }
 
-    smoothing_group_index = IntProperty(
+    smoothing_group_index: IntProperty(
             name=ms3d_str['PROP_SMOOTHING_GROUP_INDEX'],
             options={'HIDDEN', 'SKIP_SAVE', },
             )
@@ -722,7 +722,7 @@ class Ms3dGroupOperator(Operator):
     bl_label = ms3d_str['BL_LABEL_GROUP_OPERATOR']
     bl_options = {'UNDO', 'INTERNAL', }
 
-    mode = EnumProperty(
+    mode: EnumProperty(
             items=( ('', "", ""),
                     ('ADD_GROUP',
                             ms3d_str['ENUM_ADD_GROUP_1'],
@@ -813,7 +813,7 @@ class Ms3dMaterialOperator(Operator):
     bl_label = ms3d_str['BL_LABEL_MATERIAL_OPERATOR']
     bl_options = {'UNDO', 'INTERNAL', }
 
-    mode = EnumProperty(
+    mode: EnumProperty(
             items=( ('', "", ""),
                     ('FROM_BLENDER',
                             ms3d_str['ENUM_FROM_BLENDER_1'],
@@ -858,14 +858,14 @@ class Ms3dMaterialOperator(Operator):
 
 ###############################################################################
 class Ms3dGroupProperties(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name=ms3d_str['PROP_NAME_NAME'],
             description=ms3d_str['PROP_DESC_GROUP_NAME'],
             default="",
             #options={'HIDDEN', },
             )
 
-    flags = EnumProperty(
+    flags: EnumProperty(
             name=ms3d_str['PROP_NAME_FLAGS'],
             description=ms3d_str['PROP_DESC_FLAGS_GROUP'],
             items=(#(Ms3dUi.FLAG_NONE, ms3d_str['ENUM_FLAG_NONE_1'],
@@ -904,25 +904,25 @@ class Ms3dGroupProperties(PropertyGroup):
             options={'ENUM_FLAG', 'ANIMATABLE', },
             )
 
-    comment = StringProperty(
+    comment: StringProperty(
             name=ms3d_str['PROP_NAME_COMMENT'],
             description=ms3d_str['PROP_DESC_COMMENT_GROUP'],
             default="",
             #options={'HIDDEN', },
             )
 
-    id = IntProperty(options={'HIDDEN', },)
+    id: IntProperty(options={'HIDDEN', },)
 
 
 class Ms3dModelProperties(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name=ms3d_str['PROP_NAME_NAME'],
             description=ms3d_str['PROP_DESC_NAME_MODEL'],
             default="",
             #options={'HIDDEN', },
             )
 
-    joint_size = FloatProperty(
+    joint_size: FloatProperty(
             name=ms3d_str['PROP_NAME_JOINT_SIZE'],
             description=ms3d_str['PROP_DESC_JOINT_SIZE'],
             min=Ms3dUi.PROP_JOINT_SIZE_MIN, max=Ms3dUi.PROP_JOINT_SIZE_MAX,
@@ -933,7 +933,7 @@ class Ms3dModelProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    transparency_mode = EnumProperty(
+    transparency_mode: EnumProperty(
             name=ms3d_str['PROP_NAME_TRANSPARENCY_MODE'],
             description=ms3d_str['PROP_DESC_TRANSPARENCY_MODE'],
             items=( (Ms3dUi.MODE_TRANSPARENCY_SIMPLE,
@@ -954,7 +954,7 @@ class Ms3dModelProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    alpha_ref = FloatProperty(
+    alpha_ref: FloatProperty(
             name=ms3d_str['PROP_NAME_ALPHA_REF'],
             description=ms3d_str['PROP_DESC_ALPHA_REF'],
             min=0, max=1, precision=3, step=0.1,
@@ -963,7 +963,7 @@ class Ms3dModelProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    comment = StringProperty(
+    comment: StringProperty(
             name=ms3d_str['PROP_NAME_COMMENT'],
             description=ms3d_str['PROP_DESC_COMMENT_MODEL'],
             default="",
@@ -973,7 +973,7 @@ class Ms3dModelProperties(PropertyGroup):
     ##########################
     # ms3d group handling
     #
-    apply_mode = EnumProperty(
+    apply_mode: EnumProperty(
             items=( ('ASSIGN',
                             ms3d_str['ENUM_ASSIGN_1'],
                             ms3d_str['ENUM_ASSIGN_2_SMOOTHING_GROUP']),
@@ -988,7 +988,7 @@ class Ms3dModelProperties(PropertyGroup):
             options={'HIDDEN', 'SKIP_SAVE', },
             )
 
-    selected_group_index = IntProperty(
+    selected_group_index: IntProperty(
             default=-1,
             min=-1,
             options={'HIDDEN', 'SKIP_SAVE', },
@@ -997,7 +997,7 @@ class Ms3dModelProperties(PropertyGroup):
     # ms3d group handling
     ##########################
 
-    groups = CollectionProperty(
+    groups: CollectionProperty(
             type=Ms3dGroupProperties,
             #options={'HIDDEN', },
             )
@@ -1025,7 +1025,7 @@ class Ms3dModelProperties(PropertyGroup):
 
 
 class Ms3dArmatureProperties(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name=ms3d_str['PROP_NAME_NAME'],
             description=ms3d_str['PROP_DESC_NAME_ARMATURE'],
             default="",
@@ -1034,14 +1034,14 @@ class Ms3dArmatureProperties(PropertyGroup):
 
 
 class Ms3dJointProperties(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name=ms3d_str['PROP_NAME_NAME'],
             description=ms3d_str['PROP_DESC_NAME_JOINT'],
             default="",
             #options={'HIDDEN', },
             )
 
-    flags = EnumProperty(
+    flags: EnumProperty(
             name=ms3d_str['PROP_NAME_FLAGS'],
             description=ms3d_str['PROP_DESC_FLAGS_JOINT'],
             items=(#(Ms3dUi.FLAG_NONE,
@@ -1081,7 +1081,7 @@ class Ms3dJointProperties(PropertyGroup):
             options={'ENUM_FLAG', 'ANIMATABLE', },
             )
 
-    color = FloatVectorProperty(
+    color: FloatVectorProperty(
             name=ms3d_str['PROP_NAME_COLOR'],
             description=ms3d_str['PROP_DESC_COLOR_JOINT'],
             subtype='COLOR', size=3, min=0, max=1, precision=3, step=0.1,
@@ -1089,7 +1089,7 @@ class Ms3dJointProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    comment = StringProperty(
+    comment: StringProperty(
             name=ms3d_str['PROP_NAME_COMMENT'],
             description=ms3d_str['PROP_DESC_COMMENT_JOINT'],
             default="",
@@ -1185,14 +1185,14 @@ class Ms3dMaterialHelper:
 
 
 class Ms3dMaterialProperties(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name=ms3d_str['PROP_NAME_NAME'],
             description=ms3d_str['PROP_DESC_NAME_MATERIAL'],
             default="",
             #options={'HIDDEN', },
             )
 
-    ambient = FloatVectorProperty(
+    ambient: FloatVectorProperty(
             name=ms3d_str['PROP_NAME_AMBIENT'],
             description=ms3d_str['PROP_DESC_AMBIENT'],
             subtype='COLOR', size=4, min=0, max=1, precision=3, step=0.1,
@@ -1201,7 +1201,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    diffuse = FloatVectorProperty(
+    diffuse: FloatVectorProperty(
             name=ms3d_str['PROP_NAME_DIFFUSE'],
             description=ms3d_str['PROP_DESC_DIFFUSE'],
             subtype='COLOR', size=4, min=0, max=1, precision=3, step=0.1,
@@ -1210,7 +1210,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    specular = FloatVectorProperty(
+    specular: FloatVectorProperty(
             name=ms3d_str['PROP_NAME_SPECULAR'],
             description=ms3d_str['PROP_DESC_SPECULAR'],
             subtype='COLOR', size=4, min=0, max=1, precision=3, step=0.1,
@@ -1219,7 +1219,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    emissive = FloatVectorProperty(
+    emissive: FloatVectorProperty(
             name=ms3d_str['PROP_NAME_EMISSIVE'],
             description=ms3d_str['PROP_DESC_EMISSIVE'],
             subtype='COLOR', size=4, min=0, max=1, precision=3, step=0.1,
@@ -1228,7 +1228,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    shininess = FloatProperty(
+    shininess: FloatProperty(
             name=ms3d_str['PROP_NAME_SHININESS'],
             description=ms3d_str['PROP_DESC_SHININESS'],
             min=0, max=Ms3dSpec.MAX_MATERIAL_SHININESS, precision=3, step=0.1,
@@ -1238,7 +1238,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    transparency = FloatProperty(
+    transparency: FloatProperty(
             name=ms3d_str['PROP_NAME_TRANSPARENCY'],
             description=ms3d_str['PROP_DESC_TRANSPARENCY'],
             min=0, max=1, precision=3, step=0.1,
@@ -1248,7 +1248,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    mode = EnumProperty(
+    mode: EnumProperty(
             name=ms3d_str['PROP_NAME_MODE'],
             description=ms3d_str['PROP_DESC_MODE_TEXTURE'],
             items=( (Ms3dUi.FLAG_TEXTURE_COMBINE_ALPHA,
@@ -1269,7 +1269,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             options={'ANIMATABLE', 'ENUM_FLAG', },
             )
 
-    texture = StringProperty(
+    texture: StringProperty(
             name=ms3d_str['PROP_NAME_TEXTURE'],
             description=ms3d_str['PROP_DESC_TEXTURE'],
             default="",
@@ -1277,7 +1277,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    alphamap = StringProperty(
+    alphamap: StringProperty(
             name=ms3d_str['PROP_NAME_ALPHAMAP'],
             description=ms3d_str['PROP_DESC_ALPHAMAP'],
             default="",
@@ -1285,7 +1285,7 @@ class Ms3dMaterialProperties(PropertyGroup):
             #options={'HIDDEN', },
             )
 
-    comment = StringProperty(
+    comment: StringProperty(
             name=ms3d_str['PROP_NAME_COMMENT'],
             description=ms3d_str['PROP_DESC_COMMENT_MATERIAL'],
             default="",
diff --git a/io_scene_vrml2/__init__.py b/io_scene_vrml2/__init__.py
index 4a420f70..e6d80db9 100644
--- a/io_scene_vrml2/__init__.py
+++ b/io_scene_vrml2/__init__.py
@@ -60,37 +60,37 @@ class ExportVRML(bpy.types.Operator, ExportHelper):
     bl_label = "Export VRML2"
 
     filename_ext = ".wrl"
-    filter_glob = StringProperty(default="*.wrl", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.wrl", options={'HIDDEN'})
 
-    use_selection = BoolProperty(
+    use_selection: BoolProperty(
             name="Selection Only",
             description="Export selected objects only",
             default=False,
             )
 
-    use_mesh_modifiers = BoolProperty(
+    use_mesh_modifiers: BoolProperty(
             name="Apply Modifiers",
             description="Apply Modifiers to the exported mesh",
             default=True,
             )
-    use_color = BoolProperty(
+    use_color: BoolProperty(
             name="Vertex Colors",
             description="Export the active vertex color layer",
             default=True,
             )
-    color_type = EnumProperty(
+    color_type: EnumProperty(
             name='Color',
             items=(
             ('VERTEX', "Vertex Color", ""),
             ('MATERIAL', "Material Color", "")),
             )
-    use_uv = BoolProperty(
+    use_uv: BoolProperty(
             name="Texture/UVs",
             description="Export the active texture and UV coords",
             default=True,
             )
 
-    global_scale = FloatProperty(
+    global_scale: FloatProperty(
             name="Scale",
             min=0.01, max=1000.0,
             default=1.0,
diff --git a/io_scene_x/__init__.py b/io_scene_x/__init__.py
index 404d9dc2..c8e2bc73 100644
--- a/io_scene_x/__init__.py
+++ b/io_scene_x/__init__.py
@@ -43,112 +43,112 @@ class ExportDirectX(bpy.types.Operator):
     bl_idname = "export_scene.x"
     bl_label = "Export DirectX"
 
-    filepath = StringProperty(subtype='FILE_PATH')
+    filepath: StringProperty(subtype='FILE_PATH')
 
     # Export options
 
-    SelectedOnly = BoolProperty(
+    SelectedOnly: BoolProperty(
         name="Export Selected Objects Only",
         description="Export only selected objects",
         default=True)
 
-    CoordinateSystem = EnumProperty(
+    CoordinateSystem: EnumProperty(
         name="Coordinate System",
         description="Use the selected coordinate system for export",
         items=(('LEFT_HANDED', "Left-Handed", "Use a Y up, Z forward system or a Z up, -Y forward system"),
                ('RIGHT_HANDED', "Right-Handed", "Use a Y up, -Z forward system or a Z up, Y forward system")),
         default='LEFT_HANDED')
 
-    UpAxis = EnumProperty(
+    UpAxis: EnumProperty(
         name="Up Axis",
         description="The selected axis points upward",
         items=(('Y', "Y", "The Y axis points up"),
                ('Z', "Z", "The Z axis points up")),
         default='Y')
 
-    ExportMeshes = BoolProperty(
+    ExportMeshes: BoolProperty(
         name="Export Meshes",
         description="Export mesh objects",
         default=True)
 
-    ExportNormals = BoolProperty(
+    ExportNormals: BoolProperty(
         name="    Export Normals",
         description="Export mesh normals",
         default=True)
 
-    FlipNormals = BoolProperty(
+    FlipNormals: BoolProperty(
         name="        Flip Normals",
         description="Flip mesh normals before export",
         default=False)
 
-    ExportUVCoordinates = BoolProperty(
+    ExportUVCoordinates: BoolProperty(
         name="    Export UV Coordinates",
         description="Export mesh UV coordinates, if any",
         default=True)
 
-    ExportMaterials = BoolProperty(
+    ExportMaterials: BoolProperty(
         name="    Export Materials",
         description="Export material properties and reference image textures",
         default=True)
 
-    ExportActiveImageMaterials = BoolProperty(
+    ExportActiveImageMaterials: BoolProperty(
         name="        Reference Active Images as Textures",
         description="Reference the active image of each face as a texture, "\
             "as opposed to the image assigned to the material",
         default=False)
 
-    ExportVertexColors = BoolProperty(
+    ExportVertexColors: BoolProperty(
         name="    Export Vertex Colors",
         description="Export mesh vertex colors, if any",
         default=False)
 
-    ExportSkinWeights = BoolProperty(
+    ExportSkinWeights: BoolProperty(
         name="    Export Skin Weights",
         description="Bind mesh vertices to armature bones",
         default=False)
 
-    ApplyModifiers = BoolProperty(
+    ApplyModifiers: BoolProperty(
         name="    Apply Modifiers",
         description="Apply the effects of object modifiers before export",
         default=False)
 
-    ExportArmatureBones = BoolProperty(
+    ExportArmatureBones: BoolProperty(
         name="Export Armature Bones",
         description="Export armatures bones",
         default=False)
 
-    ExportRestBone = BoolProperty(
+    ExportRestBone: BoolProperty(
         name="    Export Rest Position",
         description="Export bones in their rest position (recommended for "\
             "animation)",
         default=False)
 
-    ExportAnimation = BoolProperty(
+    ExportAnimation: BoolProperty(
         name="Export Animations",
         description="Export object and bone animations.  Data is exported for "\
             "every frame",
         default=False)
 
-    IncludeFrameRate = BoolProperty(
+    IncludeFrameRate: BoolProperty(
         name="    Include Frame Rate",
         description="Include the AnimTicksPerSecond template which is "\
             "used by some engines to control animation speed",
         default=False)
 
-    ExportActionsAsSets = BoolProperty(
+    ExportActionsAsSets: BoolProperty(
         name="    Export Actions as AnimationSets",
         description="Export each action of each object as a separate "\
             "AnimationSet. Otherwise all current actions are lumped "\
             "together into a single set",
         default=False)
 
-    AttachToFirstArmature = BoolProperty(
+    AttachToFirstArmature: BoolProperty(
         name="        Attach Unused Actions to First Armature",
         description="Export each unused action as if used by the first "\
             "armature object",
         default=False)
 
-    Verbose = BoolProperty(
+    Verbose: BoolProperty(
         name="Verbose",
         description="Run the exporter in debug mode. Check the console for "\
             "output",
diff --git a/io_scene_x3d/__init__.py b/io_scene_x3d/__init__.py
index 06a9a122..8115f72e 100644
--- a/io_scene_x3d/__init__.py
+++ b/io_scene_x3d/__init__.py
@@ -62,7 +62,7 @@ class ImportX3D(bpy.types.Operator, ImportHelper):
     bl_options = {'PRESET', 'UNDO'}
 
     filename_ext = ".x3d"
-    filter_glob = StringProperty(default="*.x3d;*.wrl", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.x3d;*.wrl", options={'HIDDEN'})
 
     def execute(self, context):
         from . import import_x3d
@@ -87,51 +87,51 @@ class ExportX3D(bpy.types.Operator, ExportHelper):
     bl_options = {'PRESET'}
 
     filename_ext = ".x3d"
-    filter_glob = StringProperty(default="*.x3d", options={'HIDDEN'})
+    filter_glob: StringProperty(default="*.x3d", options={'HIDDEN'})
 
-    use_selection = BoolProperty(
+    use_selection: BoolProperty(
             name="Selection Only",
             description="Export selected objects only",
             default=False,
             )
-    use_mesh_modifiers = BoolProperty(
+    use_mesh_modifiers: BoolProperty(
             name="Apply Modifiers",
             description="Use transformed mesh data from each object",
             default=True,
             )
-    use_triangulate = BoolProperty(
+    use_triangulate: BoolProperty(
             name="Triangulate",
             description="Write quads into 'IndexedTriangleSet'",
             default=False,
             )
-    use_normals = BoolProperty(
+    use_normals: BoolProperty(
             name="Normals",
             description="Write normals with geometry",
             default=False,
             )
-    use_compress = BoolProperty(
+    use_compress: BoolProperty(
             name="Compress",
             description="Compress the exported file",
             default=False,
             )
-    use_hierarchy = BoolProperty(
+    use_hierarchy: BoolProperty(
             name="Hierarchy",
             description="Export parent child relationships",
             default=True,
             )
-    name_decorations = BoolProperty(
+    name_decorations: BoolProperty(
             name="Name decorations",
             description=("Add prefixes to the names of exported nodes to "
                          "indicate their type"),
             default=True,
             )
-    use_h3d = BoolProperty(
+    use_h3d: BoolProperty(
             name="H3D Extensions",
             description="Export shaders for H3D",
             default=False,
             )
 
-    global_scale = FloatProperty(
+    global_scale: FloatProperty(
             name="Scale",
             min=0.01, max=1000.0,
             default=1.0,
diff --git a/io_sequencer_edl/__init__.py b/io_sequencer_edl/__init__.py
index 44f04d32..5afc1a8d 100644
--- a/io_sequencer_edl/__init__.py
+++ b/io_sequencer_edl/__init__.py
@@ -96,7 +96,7 @@ class FindReelsEDL(Operator):
     """ Matching by reel name and existing filename when set"""
     bl_idname = "sequencer.import_edl_findreel"
     bl_label = "Find Missing Reel Files"
-    directory = StringProperty(
+    directory: StringProperty(
             subtype='DIR_PATH',
             )
 
@@ -246,26 +246,26 @@ class ImportEDL(Operator):
 # Persistent Scene Data Types (store EDL import info)
 
 class EDLReelInfo(bpy.types.PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name="Name",
             )
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="Video File",
             subtype='FILE_PATH',
             )
-    frame_offset = IntProperty(
+    frame_offset: IntProperty(
             name="Frame Offset",
             )
 
 
 class EDLImportInfo(bpy.types.PropertyGroup):
-    filepath = StringProperty(
+    filepath: StringProperty(
             subtype='FILE_PATH',
             )
-    reels = bpy.props.CollectionProperty(
+    reels: bpy.props.CollectionProperty(
             type=EDLReelInfo,
             )
-    frame_offset = IntProperty(
+    frame_offset: IntProperty(
             name="Global Frame Offset",
             )
 
diff --git a/light_field_tools/__init__.py b/light_field_tools/__init__.py
index b749f44c..17e32c8b 100644
--- a/light_field_tools/__init__.py
+++ b/light_field_tools/__init__.py
@@ -54,7 +54,7 @@ from bpy.props import (
 
 # global properties for the script, mainly for UI
 class LightFieldPropertyGroup(PropertyGroup):
-    angle = FloatProperty(
+    angle: FloatProperty(
             name="Angle",
             # 40 degrees
             default=0.69813170079,
@@ -65,38 +65,38 @@ class LightFieldPropertyGroup(PropertyGroup):
             subtype='ANGLE',
             description="Field of view of camera and angle of beam for spotlights"
             )
-    row_length = IntProperty(
+    row_length: IntProperty(
             name="Row Length",
             default=1,
             min=1,
             description="The number of cameras/lights in one row"
             )
-    create_handler = BoolProperty(
+    create_handler: BoolProperty(
             name="Handler",
             default=True,
             description="Creates an empty object, to which the cameras and spotlights are parented to"
             )
-    do_camera = BoolProperty(
+    do_camera: BoolProperty(
             name="Create Camera",
             default=True,
             description="A light field camera is created"
             )
-    animate_camera = BoolProperty(
+    animate_camera: BoolProperty(
             name="Animate Camera",
             default=True,
             description="Animates a single camera, so not multiple cameras get created"
             )
-    do_projection = BoolProperty(
+    do_projection: BoolProperty(
             name="Create Projector",
             default=False,
             description="A light field projector is created"
             )
-    texture_path = StringProperty(
+    texture_path: StringProperty(
             name="Texture Path",
             description="From this path textures for the spotlights will be loaded",
             subtype='DIR_PATH'
             )
-    light_intensity = FloatProperty(
+    light_intensity: FloatProperty(
             name="Light Intensity",
             default=2,
             min=0,
@@ -104,7 +104,7 @@ class LightFieldPropertyGroup(PropertyGroup):
             description="Total intensity of all lamps"
             )
     # blending of the spotlights
-    spot_blend = FloatProperty(
+    spot_blend: FloatProperty(
             name="Blend",
             default=0,
             min=0,
@@ -113,7 +113,7 @@ class LightFieldPropertyGroup(PropertyGroup):
             description="Blending of the spotlights"
             )
     # spacing in pixels on the focal plane
-    spacing = IntProperty(
+    spacing: IntProperty(
             name="Spacing",
             default=10,
             min=0,
@@ -150,7 +150,7 @@ class LFTPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Tools",
diff --git a/materials_library_vx/__init__.py b/materials_library_vx/__init__.py
index 8aa8993f..3569370e 100644
--- a/materials_library_vx/__init__.py
+++ b/materials_library_vx/__init__.py
@@ -145,7 +145,7 @@ class EmptyGroup(PropertyGroup):
 # bpy.utils.register_class(EmptyGroup)
 
 class matlibMaterials(PropertyGroup):
-  category = StringProperty()
+  category: StringProperty()
 # bpy.utils.register_class(matlibMaterials)
 
 #bpy.types.Scene.matlib_categories = CollectionProperty(type=EmptyGroup)
@@ -283,13 +283,13 @@ class matlibProperties(PropertyGroup):
   #MATLIB PROPERTIES
 
   #libraries are read from the xml
-  lib_index = IntProperty(min = -1, default = 2, update=update_lib_index)
-  all_materials = CollectionProperty(type = matlibMaterials)
-  materials = CollectionProperty(type = matlibMaterials)
-  mat_index = IntProperty(min = -1, default = -1)
-  categories = CollectionProperty(type = EmptyGroup)
-  cat_index = IntProperty(min = -1, default = -1, update=update_cat_index)
-  search = StringProperty(name="Search", description="Find By Name", update=update_search_index)
+  lib_index: IntProperty(min = -1, default = 2, update=update_lib_index)
+  all_materials: CollectionProperty(type = matlibMaterials)
+  materials: CollectionProperty(type = matlibMaterials)
+  mat_index: IntProperty(min = -1, default = -1)
+  categories: CollectionProperty(type = EmptyGroup)
+  cat_index: IntProperty(min = -1, default = -1, update=update_cat_index)
+  search: StringProperty(name="Search", description="Find By Name", update=update_search_index)
 
   #MATLIB OPTIONS
   #link: import material linked
@@ -299,12 +299,12 @@ class matlibProperties(PropertyGroup):
   #filter: enable or disable category filter
   #last selected: store the last selected object to regain focus when apply a material.
   #hide_search: Hides Search Field
-  link = BoolProperty(name = "Linked", description="Link the material", default = False)
-  force_import = BoolProperty(name = "Force Import", description="Use Scene Materials by default", default = False)
-  filter = BoolProperty(name = "Filter",description="Filter Categories", default = False, update=update_filter)
-  show_prefs = BoolProperty(name = "show_prefs", description="Preferences", default = False)
-  last_selected = StringProperty(name="Last Selected")
-  hide_search = BoolProperty(name="Hide Search", description="Use Blender Search Only")
+  link: BoolProperty(name = "Linked", description="Link the material", default = False)
+  force_import: BoolProperty(name = "Force Import", description="Use Scene Materials by default", default = False)
+  filter: BoolProperty(name = "Filter",description="Filter Categories", default = False, update=update_filter)
+  show_prefs: BoolProperty(name = "show_prefs", description="Preferences", default = False)
+  last_selected: StringProperty(name="Last Selected")
+  hide_search: BoolProperty(name="Hide Search", description="Use Blender Search Only")
   #import_file = StringProperty("Import File", subtype="FILE_PATH")
   #path = os.path.dirname(path)
   #Development only
@@ -918,10 +918,10 @@ class MATLIB_OT_operator(Operator):
   bl_idname = "matlib.operator"
   __doc__ = "Add, Remove, Reload, Apply, Preview, Clean Material"
 
-  category = StringProperty(name="Category")
-  filepath = StringProperty(options={'HIDDEN'})
-  cmd = bpy.props.StringProperty(name="Command", options={'HIDDEN'})
-  filter_glob = StringProperty(default="*.blend", options={'HIDDEN'})
+  category: StringProperty(name="Category")
+  filepath: StringProperty(options={'HIDDEN'})
+  cmd: bpy.props.StringProperty(name="Command", options={'HIDDEN'})
+  filter_glob: StringProperty(default="*.blend", options={'HIDDEN'})
   @classmethod
   def poll(cls, context):
     return context.active_object is not None
@@ -1210,7 +1210,7 @@ def reload_library(self, context):
 class matlibvxPref(AddonPreferences):
     bl_idname = __name__
 
-    matlib_path = StringProperty(
+    matlib_path: StringProperty(
         name="Additional Path",
         description="User defined path to .blend libraries files",
         default="",
diff --git a/materials_utils/__init__.py b/materials_utils/__init__.py
index 32324ad8..5e3fba05 100644
--- a/materials_utils/__init__.py
+++ b/materials_utils/__init__.py
@@ -969,12 +969,12 @@ class VIEW3D_OT_assign_material(Operator):
     bl_property = "matname"
     bl_options = {'REGISTER', 'UNDO'}
 
-    is_existing = BoolProperty(
+    is_existing: BoolProperty(
         name="Is it a new Material",
         options={'HIDDEN'},
         default=True,
     )
-    matname = StringProperty(
+    matname: StringProperty(
         name="Material Name",
         description="Name of the Material to Assign",
         options={'HIDDEN'},
@@ -1171,7 +1171,7 @@ class VIEW3D_OT_select_material_by_name(Operator):
     bl_description = "Select geometry with this material assigned to it"
     bl_options = {'REGISTER', 'UNDO'}
 
-    matname = StringProperty(
+    matname: StringProperty(
         name="Material Name",
         description="Name of Material to Select",
         maxlen=63,
@@ -1234,23 +1234,23 @@ class VIEW3D_OT_replace_material(Operator):
     bl_description = "Replace a material by name"
     bl_options = {'REGISTER', 'UNDO'}
 
-    matorg = StringProperty(
+    matorg: StringProperty(
         name="Original",
         description="Material to replace",
         maxlen=63,
     )
-    matrep = StringProperty(
+    matrep: StringProperty(
         name="Replacement",
         description="Replacement material",
         maxlen=63,
     )
-    all_objects = BoolProperty(
+    all_objects: BoolProperty(
         name="All objects",
         description="If enabled, replace for all objects in this blend file\n"
                     "If disabled, only selected objects will be affected",
         default=False,
     )
-    update_selection = BoolProperty(
+    update_selection: BoolProperty(
         name="Update Selection",
         description="Select affected objects and deselect unaffected",
         default=True,
@@ -1286,13 +1286,13 @@ class VIEW3D_OT_fake_user_set(Operator):
     bl_description = "Enable/disable fake user for materials"
     bl_options = {'REGISTER', 'UNDO'}
 
-    fake_user = EnumProperty(
+    fake_user: EnumProperty(
         name="Fake User",
         description="Turn fake user on or off",
         items=(('ON', "On", "Enable fake user"), ('OFF', "Off", "Disable fake user")),
         default='ON',
     )
-    materials = EnumProperty(
+    materials: EnumProperty(
         name="Materials",
         description="Chose what objects and materials to affect",
         items=(('ACTIVE', "Active object", "Materials of active object only"),
@@ -1441,11 +1441,11 @@ class MATERIAL_OT_link_to_base_names(Operator):
                       "Material/Name on All Materials/Objects")
     bl_options = {'REGISTER', 'UNDO'}
 
-    mat_keep = StringProperty(
+    mat_keep: StringProperty(
         name="Material to keep",
         default="",
     )
-    is_auto = BoolProperty(
+    is_auto: BoolProperty(
         name="Auto Rename/Replace",
         description="Automatically Replace names by stripping numerical suffix",
         default=False,
@@ -2160,7 +2160,7 @@ class MATERIAL_OT_converter_report(Operator):
     bl_description = "Report about done Material Conversions"
     bl_options = {'REGISTER', 'INTERNAL'}
 
-    message = StringProperty(maxlen=8192)
+    message: StringProperty(maxlen=8192)
 
     def draw(self, context):
         layout = self.layout
@@ -2181,62 +2181,62 @@ class MATERIAL_OT_converter_report(Operator):
 
 # Scene Properties
 class material_specials_scene_mats(PropertyGroup):
-    name = StringProperty()
-    mat_lib = BoolProperty(
+    name: StringProperty()
+    mat_lib: BoolProperty(
         default=False
     )
-    mat_fake_user = BoolProperty(
+    mat_fake_user: BoolProperty(
         default=False
     )
 
 
 class material_specials_scene_props(PropertyGroup):
-    conv_path = StringProperty(
+    conv_path: StringProperty(
         name="Save Directory",
         description="Path to save images during conversion\n"
                     "Default is the location of the blend file",
         default="//",
         subtype='DIR_PATH'
     )
-    EXTRACT_ALPHA = BoolProperty(
+    EXTRACT_ALPHA: BoolProperty(
         attr="EXTRACT_ALPHA",
         default=False,
         description="Extract Alpha channel from non-procedural images\n"
                     "Don't use this option if the image doesn't have Alpha"
     )
-    SET_FAKE_USER = BoolProperty(
+    SET_FAKE_USER: BoolProperty(
         attr="SET_FAKE_USER",
         default=False,
         description="Set fake user on unused images, so they can be kept in the .blend"
     )
-    EXTRACT_PTEX = BoolProperty(
+    EXTRACT_PTEX: BoolProperty(
         attr="EXTRACT_PTEX",
         default=False,
         description="Extract procedural images and bake them to jpeg"
     )
-    EXTRACT_OW = BoolProperty(
+    EXTRACT_OW: BoolProperty(
         attr="Overwrite",
         default=False,
         description="Extract textures again instead of re-using previously extracted textures"
     )
-    SCULPT_PAINT = BoolProperty(
+    SCULPT_PAINT: BoolProperty(
         attr="SCULPT_PAINT",
         default=False,
         description="Conversion geared towards sculpting and painting.\n"
                     "Creates a diffuse, glossy mixed with layer weight.\n"
                     "Image nodes are not connected"
     )
-    UV_UNWRAP = BoolProperty(
+    UV_UNWRAP: BoolProperty(
         attr="UV_UNWRAP",
         default=False,
         description="Use automatic Angle based UV Unwrap for the Active Object"
     )
-    enable_report = BoolProperty(
+    enable_report: BoolProperty(
         attr="enable_report",
         default=False,
         description="Enable Converter Report in the UI"
     )
-    img_bake_size = EnumProperty(
+    img_bake_size: EnumProperty(
         name="Bake Image Size",
         description="Set the resolution size of baked images \n",
         items=(
@@ -2246,7 +2246,7 @@ class material_specials_scene_props(PropertyGroup):
         ),
         default='1024'
     )
-    set_material_name = StringProperty(
+    set_material_name: StringProperty(
         name="New Material name",
         description="What Base name pattern to use for a new created Material\n"
                     "It is appended by an automatic numeric pattern depending\n"
@@ -2254,12 +2254,12 @@ class material_specials_scene_props(PropertyGroup):
         default="Material_New",
         maxlen=128
     )
-    use_tweak = BoolProperty(
+    use_tweak: BoolProperty(
         name="Tweak Settings",
         description="Open Preview Active Material after new Material creation",
         default=False
     )
-    index_mat = IntProperty(
+    index_mat: IntProperty(
         name="index",
         options={"HIDDEN"}
     )
@@ -2269,19 +2269,19 @@ class material_specials_scene_props(PropertyGroup):
 class VIEW3D_MT_material_utils_pref(AddonPreferences):
     bl_idname = __name__
 
-    show_warnings = BoolProperty(
+    show_warnings: BoolProperty(
         name="Enable Warning messages",
         default=False,
         description="Show warning messages when an action is executed or failed"
     )
-    show_remove_mat = BoolProperty(
+    show_remove_mat: BoolProperty(
         name="Enable Remove all Materials",
         default=False,
         description="Enable Remove all Materials for all Selected Objects\n\n"
                     "Use with care - if you want to keep materials after\n"
                     "closing or reloading Blender, Set Fake User for them"
     )
-    show_mat_preview = BoolProperty(
+    show_mat_preview: BoolProperty(
         name="Enable Material Preview",
         default=True,
         description="Material Preview of the Active Object\n"
@@ -2289,7 +2289,7 @@ class VIEW3D_MT_material_utils_pref(AddonPreferences):
                     "Use nodes, Color, Specular and Transparency\n"
                     "settings depending on the Context and Preferences"
     )
-    set_cleanmatslots = BoolProperty(
+    set_cleanmatslots: BoolProperty(
         name="Enable Auto Clean",
         default=True,
         description="Enable Automatic Removal of unused Material Slots\n"
@@ -2298,18 +2298,18 @@ class VIEW3D_MT_material_utils_pref(AddonPreferences):
                     "adding materials, enabling it can have some\n"
                     "performance impact on very dense meshes"
     )
-    show_separators = BoolProperty(
+    show_separators: BoolProperty(
         name="Use Separators in the menus",
         default=True,
         description="Use separators in the menus, a trade-off between\n"
                     "readability vs. using more space for displaying items"
     )
-    show_converters = BoolProperty(
+    show_converters: BoolProperty(
         name="Enable Converters",
         default=False,
         description="Enable Material Converters"
     )
-    set_preview_size = EnumProperty(
+    set_preview_size: EnumProperty(
         name="Preview Menu Size",
         description="Set the preview menu size\n"
                     "depending on the number of materials\n"
@@ -2326,7 +2326,7 @@ class VIEW3D_MT_material_utils_pref(AddonPreferences):
         ),
         default='3x3'
     )
-    set_preview_type = EnumProperty(
+    set_preview_type: EnumProperty(
         name="Preview Menu Type",
         description="Set the the Preview menu type",
         items=(
@@ -2342,7 +2342,7 @@ class VIEW3D_MT_material_utils_pref(AddonPreferences):
         ),
         default='PREVIEW'
     )
-    set_experimental_type = EnumProperty(
+    set_experimental_type: EnumProperty(
         name="Experimental Features",
         description="Set the type of converters enabled",
         items=(
@@ -2355,7 +2355,7 @@ class VIEW3D_MT_material_utils_pref(AddonPreferences):
         ),
         default='ALL',
     )
-    set_add_material_menu = EnumProperty(
+    set_add_material_menu: EnumProperty(
         name="Add Material Menu",
         description="Set the type of Add Material menu",
         items=(
diff --git a/materials_utils/materials_cycles_converter.py b/materials_utils/materials_cycles_converter.py
index 0ffac4b0..11d2affa 100644
--- a/materials_utils/materials_cycles_converter.py
+++ b/materials_utils/materials_cycles_converter.py
@@ -937,12 +937,12 @@ class mlrestore(Operator):
                       "(Doesn't create new nor converts existing materials)")
     bl_options = {'REGISTER', 'UNDO'}
 
-    switcher = BoolProperty(
+    switcher: BoolProperty(
         name="Use Nodes",
         description="When restoring, switch Use Nodes On/Off",
         default=True
     )
-    renderer = EnumProperty(
+    renderer: EnumProperty(
         name="Renderer",
         description="Choose Cycles or Blender Internal",
         items=(
diff --git a/materials_utils/texture_rename.py b/materials_utils/texture_rename.py
index 585a3a7d..7ca26c4a 100644
--- a/materials_utils/texture_rename.py
+++ b/materials_utils/texture_rename.py
@@ -28,12 +28,12 @@ class TEXTURE_OT_patern_rename(Operator):
     def_name = "Texture"    # default name
     is_not_undo = False     # prevent drawing props on undo
 
-    named = StringProperty(
+    named: StringProperty(
         name="Search for name",
         description="Enter the name pattern or choose the one from the dropdown list below",
         default=def_name
     )
-    replace_all = BoolProperty(
+    replace_all: BoolProperty(
         name="Replace all",
         description="Replace all the Textures in the data with the names of the images attached",
         default=False
diff --git a/measureit/__init__.py b/measureit/__init__.py
index 4944cd14..fdc64f23 100644
--- a/measureit/__init__.py
+++ b/measureit/__init__.py
@@ -102,7 +102,7 @@ class Measure_Pref(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Display",
diff --git a/mesh_auto_mirror.py b/mesh_auto_mirror.py
index 63952b7f..fa0663af 100644
--- a/mesh_auto_mirror.py
+++ b/mesh_auto_mirror.py
@@ -208,7 +208,7 @@ class BisectMirror(Panel):
 
 
 class AutoMirrorProperties(PropertyGroup):
-    axis = EnumProperty(
+    axis: EnumProperty(
             name="Axis",
             items=[
                 ("x", "X", "", 1),
@@ -217,7 +217,7 @@ class AutoMirrorProperties(PropertyGroup):
                 ],
             description="Axis used by the mirror modifier"
             )
-    orientation = EnumProperty(
+    orientation: EnumProperty(
             name="Orientation",
             items=[
                 ("positive", "Positive", "", 1),
@@ -225,34 +225,34 @@ class AutoMirrorProperties(PropertyGroup):
                 ],
             description="Choose the side along the axis of the editable part (+/- coordinates)"
             )
-    threshold = FloatProperty(
+    threshold: FloatProperty(
             default=0.001,
             min=0.001,
             description="Vertices closer than this distance are merged on the loopcut"
             )
-    toggle_edit = BoolProperty(
+    toggle_edit: BoolProperty(
             name="Toggle Edit Mode",
             default=True,
             description="If not in Edit mode, change mode to it"
             )
-    cut = BoolProperty(
+    cut: BoolProperty(
             name="Cut",
             default=True,
             description="If enabled, cut the mesh in two parts and mirror it\n"
                         "If not, just make a loopcut"
             )
-    clipping = BoolProperty(
+    clipping: BoolProperty(
             default=True
             )
-    use_clip = BoolProperty(
+    use_clip: BoolProperty(
             default=True,
             description="Use clipping for the mirror modifier"
             )
-    show_on_cage = BoolProperty(
+    show_on_cage: BoolProperty(
             default=True,
             description="Enable editing the cage (it's the classical modifier's option)"
             )
-    apply_mirror = BoolProperty(
+    apply_mirror: BoolProperty(
             description="Apply the mirror modifier (useful to symmetrise the mesh)"
             )
 
diff --git a/mesh_bsurfaces.py b/mesh_bsurfaces.py
index c0c1e994..35c3459d 100644
--- a/mesh_bsurfaces.py
+++ b/mesh_bsurfaces.py
@@ -164,42 +164,42 @@ class GPENCIL_OT_SURFSK_add_surface(Operator):
     bl_description = "Generates surfaces from grease pencil strokes, bezier curves or loose edges"
     bl_options = {'REGISTER', 'UNDO'}
 
-    edges_U = IntProperty(
+    edges_U: IntProperty(
                     name="Cross",
                     description="Number of face-loops crossing the strokes",
                     default=1,
                     min=1,
                     max=200
                     )
-    edges_V = IntProperty(
+    edges_V: IntProperty(
                     name="Follow",
                     description="Number of face-loops following the strokes",
                     default=1,
                     min=1,
                     max=200
                     )
-    cyclic_cross = BoolProperty(
+    cyclic_cross: BoolProperty(
                     name="Cyclic Cross",
                     description="Make cyclic the face-loops crossing the strokes",
                     default=False
                     )
-    cyclic_follow = BoolProperty(
+    cyclic_follow: BoolProperty(
                     name="Cyclic Follow",
                     description="Make cyclic the face-loops following the strokes",
                     default=False
                     )
-    loops_on_strokes = BoolProperty(
+    loops_on_strokes: BoolProperty(
                     name="Loops on strokes",
                     description="Make the loops match the paths of the strokes",
                     default=False
                     )
-    automatic_join = BoolProperty(
+    automatic_join: BoolProperty(
                     name="Automatic join",
                     description="Join automatically vertices of either surfaces generated "
                                 "by crosshatching, or from the borders of closed shapes",
                     default=False
                     )
-    join_stretch_factor = FloatProperty(
+    join_stretch_factor: FloatProperty(
                     name="Stretch",
                     description="Amount of stretching or shrinking allowed for "
                                 "edges when joining vertices automatically",
@@ -3871,7 +3871,7 @@ class BsurfPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Tools",
@@ -3889,33 +3889,33 @@ class BsurfPreferences(AddonPreferences):
 
 # Properties
 class BsurfacesProps(PropertyGroup):
-    SURFSK_cyclic_cross = BoolProperty(
+    SURFSK_cyclic_cross: BoolProperty(
                 name="Cyclic Cross",
                 description="Make cyclic the face-loops crossing the strokes",
                 default=False
                 )
-    SURFSK_cyclic_follow = BoolProperty(
+    SURFSK_cyclic_follow: BoolProperty(
                 name="Cyclic Follow",
                 description="Make cyclic the face-loops following the strokes",
                 default=False
                 )
-    SURFSK_keep_strokes = BoolProperty(
+    SURFSK_keep_strokes: BoolProperty(
                 name="Keep strokes",
                 description="Keeps the sketched strokes or curves after adding the surface",
                 default=False
                 )
-    SURFSK_automatic_join = BoolProperty(
+    SURFSK_automatic_join: BoolProperty(
                 name="Automatic join",
                 description="Join automatically vertices of either surfaces "
                             "generated by crosshatching, or from the borders of closed shapes",
                 default=True
                 )
-    SURFSK_loops_on_strokes = BoolProperty(
+    SURFSK_loops_on_strokes: BoolProperty(
                 name="Loops on strokes",
                 description="Make the loops match the paths of the strokes",
                 default=True
                 )
-    SURFSK_precision = IntProperty(
+    SURFSK_precision: IntProperty(
                 name="Precision",
                 description="Precision level of the surface calculation",
                 default=2,
diff --git a/mesh_carver.py b/mesh_carver.py
index cf3b55fd..266b426b 100644
--- a/mesh_carver.py
+++ b/mesh_carver.py
@@ -470,113 +470,113 @@ UNION = 1
 class CarverPrefs(bpy.types.AddonPreferences):
     bl_idname = __name__
 
-    Enable_Tab_01 = BoolProperty(
+    Enable_Tab_01: BoolProperty(
         name="Info",
         description="Some general information and settings about the add-on",
         default=False
     )
-    Enable_Tab_02 = BoolProperty(
+    Enable_Tab_02: BoolProperty(
         name="Hotkeys",
         description="List of the shortcuts used during carving",
         default=False
     )
-    bpy.types.Scene.Key_Create = StringProperty(
+    bpy.types.Scene.Key_Create: StringProperty(
         name="Object creation",
         description="Object creation",
         maxlen=1,
         default="C"
     )
-    bpy.types.Scene.Key_Update = StringProperty(
+    bpy.types.Scene.Key_Update: StringProperty(
         name="Auto Bevel Update",
         description="Auto Bevel Update",
         maxlen=1,
         default="A",
     )
-    bpy.types.Scene.Key_Bool = StringProperty(
+    bpy.types.Scene.Key_Bool: StringProperty(
         name="Boolean type",
         description="Boolean operation type",
         maxlen=1,
         default="T",
     )
-    bpy.types.Scene.Key_Brush = StringProperty(
+    bpy.types.Scene.Key_Brush: StringProperty(
             name="Brush Mode",
             description="Brush Mode",
             maxlen=1,
             default="B",
             )
-    bpy.types.Scene.Key_Help = StringProperty(
+    bpy.types.Scene.Key_Help: StringProperty(
         name="Help display",
         description="Help display",
         maxlen=1,
         default="H",
     )
-    bpy.types.Scene.Key_Instant = StringProperty(
+    bpy.types.Scene.Key_Instant: StringProperty(
         name="Instantiate",
         description="Instantiate object",
         maxlen=1,
         default="I",
     )
-    bpy.types.Scene.Key_Close = StringProperty(
+    bpy.types.Scene.Key_Close: StringProperty(
         name="Close polygonal shape",
         description="Close polygonal shape",
         maxlen=1,
         default="X",
     )
-    bpy.types.Scene.Key_Apply = StringProperty(
+    bpy.types.Scene.Key_Apply: StringProperty(
         name="Apply operation",
         description="Apply operation",
         maxlen=1,
         default="Q",
     )
-    bpy.types.Scene.Key_Scale = StringProperty(
+    bpy.types.Scene.Key_Scale: StringProperty(
         name="Scale object",
         description="Scale object",
         maxlen=1,
         default="S",
     )
-    bpy.types.Scene.Key_Gapy = StringProperty(
+    bpy.types.Scene.Key_Gapy: StringProperty(
         name="Gap rows",
         description="Scale gap between columns",
         maxlen=1,
         default="J",
     )
-    bpy.types.Scene.Key_Gapx = StringProperty(
+    bpy.types.Scene.Key_Gapx: StringProperty(
         name="Gap columns",
         description="Scale gap between columns",
         maxlen=1,
         default="U",
     )
-    bpy.types.Scene.Key_Depth = StringProperty(
+    bpy.types.Scene.Key_Depth: StringProperty(
         name="Depth",
         description="Cursor depth or solidify pattern",
         maxlen=1,
         default="D",
     )
-    bpy.types.Scene.Key_BrushDepth = StringProperty(
+    bpy.types.Scene.Key_BrushDepth: StringProperty(
         name="Brush Depth",
         description="Brush depth",
         maxlen=1,
         default="C",
     )
-    bpy.types.Scene.Key_Subadd = StringProperty(
+    bpy.types.Scene.Key_Subadd: StringProperty(
         name="Add subdivision",
         description="Add subdivision",
         maxlen=1,
         default="X",
     )
-    bpy.types.Scene.Key_Subrem = StringProperty(
+    bpy.types.Scene.Key_Subrem: StringProperty(
         name="Remove subdivision",
         description="Remove subdivision",
         maxlen=1,
         default="W",
     )
-    bpy.types.Scene.Key_Randrot = StringProperty(
+    bpy.types.Scene.Key_Randrot: StringProperty(
         name="Random rotation",
         description="Random rotation",
         maxlen=1,
         default="R",
     )
-    bpy.types.Scene.ProfilePrefix = StringProperty(
+    bpy.types.Scene.ProfilePrefix: StringProperty(
         name="Profile prefix",
         description="Prefix to look for profiles with",
         default="Carver_Profile-"
@@ -3408,23 +3408,23 @@ class Carver(bpy.types.Operator):
 
 
 class CarverProperties(bpy.types.PropertyGroup):
-    DepthCursor = BoolProperty(
+    DepthCursor: BoolProperty(
         name="DepthCursor",
         default=False
     )
-    OInstanciate = BoolProperty(
+    OInstanciate: BoolProperty(
         name="Obj_Instantiate",
         default=False
     )
-    ORandom = BoolProperty(
+    ORandom: BoolProperty(
         name="Random_Rotation",
         default=False
     )
-    DontApply = BoolProperty(
+    DontApply: BoolProperty(
         name="Dont_Apply",
         default=False
     )
-    nProfile = IntProperty(
+    nProfile: IntProperty(
         name="Num_Profile",
         default=0
     )
diff --git a/mesh_extra_tools/__init__.py b/mesh_extra_tools/__init__.py
index 8c7ec764..3685079e 100644
--- a/mesh_extra_tools/__init__.py
+++ b/mesh_extra_tools/__init__.py
@@ -745,7 +745,7 @@ class MeshExtraToolsSceneProps(PropertyGroup):
             size=4,
             )
     # Vertex align
-    vert_align_store_axis = FloatVectorProperty(
+    vert_align_store_axis: FloatVectorProperty(
             name="Define Custom Coordinates",
             description="Store the values of coordinates, for repeated use\n"
                         "as a starting point",
@@ -755,12 +755,12 @@ class MeshExtraToolsSceneProps(PropertyGroup):
             subtype='XYZ',
             precision=3
             )
-    vert_align_use_stored = BoolProperty(
+    vert_align_use_stored: BoolProperty(
             name="Use Stored Coordinates",
             description="Use starting point coordinates for alignment",
             default=False
             )
-    vert_align_to = EnumProperty(
+    vert_align_to: EnumProperty(
             items=(('vertex', "Original vertex",
                     "Use the stored vertex coordinates for aligning"),
                    ('coordinates', "Custom coordinates",
@@ -775,14 +775,14 @@ class MeshExtraToolsSceneProps(PropertyGroup):
             size=3,
             )
     # Mesh Info select
-    mesh_info_show = BoolProperty(
+    mesh_info_show: BoolProperty(
             name="Show Face Info",
             description="Display the Object's Face Count information\n"
                         "Note: it can have some performance impact on dense meshes\n"
                         "Leave it closed if not needed or set the Delay to a higher value",
             default=False
             )
-    mesh_info_delay = FloatProperty(
+    mesh_info_delay: FloatProperty(
             name="Delay",
             description="Set the Update time Delay in seconds\n"
                         "Set to zero to update with the UI refresh\n"
@@ -799,12 +799,12 @@ class MeshExtraToolsSceneProps(PropertyGroup):
 class mesh_extra_tools_pref(AddonPreferences):
     bl_idname = __name__
 
-    show_info = BoolProperty(
+    show_info: BoolProperty(
             name="Info",
             default=False,
             description="Some general information about the add-on",
             )
-    show_shortcuts = BoolProperty(
+    show_shortcuts: BoolProperty(
             name="Hot Keys",
             default=False,
             description="List of the shortcuts used for the included various tools",
diff --git a/mesh_extra_tools/face_inset_fillet.py b/mesh_extra_tools/face_inset_fillet.py
index eb3e34c2..b6d38d59 100644
--- a/mesh_extra_tools/face_inset_fillet.py
+++ b/mesh_extra_tools/face_inset_fillet.py
@@ -224,7 +224,7 @@ class MESH_OT_face_inset_fillet(Operator):
     bl_options = {"REGISTER", "UNDO"}
 
     # inset amount
-    inset_amount = FloatProperty(
+    inset_amount: FloatProperty(
             name="Inset amount",
             description="Define the size of the Inset relative to the selection",
             default=0.04,
@@ -233,7 +233,7 @@ class MESH_OT_face_inset_fillet(Operator):
             precision=3
             )
     # number of sides
-    number_of_sides = IntProperty(
+    number_of_sides: IntProperty(
             name="Number of sides",
             description="Define the roundness of the corners by specifying\n"
                         "the subdivision count",
@@ -241,7 +241,7 @@ class MESH_OT_face_inset_fillet(Operator):
             min=1, max=100,
             step=1
             )
-    distance = FloatProperty(
+    distance: FloatProperty(
             name="",
             description="Use distance or radius for corners' size calculation",
             default=0.04,
@@ -249,24 +249,24 @@ class MESH_OT_face_inset_fillet(Operator):
             step=1,
             precision=3
             )
-    out = BoolProperty(
+    out: BoolProperty(
             name="Outside",
             description="Inset the Faces outwards in relation to the selection\n"
                         "Note: depending on the geometry, can give unsatisfactory results",
             default=False
             )
-    radius = BoolProperty(
+    radius: BoolProperty(
             name="Radius",
             description="Use radius for corners' size calculation",
             default=False
             )
-    type_enum = EnumProperty(
+    type_enum: EnumProperty(
             items=(('opt0', "N-gon", "N-gon corners - Keep the corner Faces uncut"),
                    ('opt1', "Triangle", "Triangulate corners")),
             name="Corner Type",
             default="opt0"
             )
-    kp = BoolProperty(
+    kp: BoolProperty(
             name="Keep faces",
             description="Do not delete the inside Faces\n"
                         "Only available if the Out option is checked",
diff --git a/mesh_extra_tools/mesh_check.py b/mesh_extra_tools/mesh_check.py
index c3d42837..2acfe184 100644
--- a/mesh_extra_tools/mesh_check.py
+++ b/mesh_extra_tools/mesh_check.py
@@ -253,7 +253,7 @@ class FaceTypeSelect(Operator):
     bl_description = "Select Triangles and / or Ngons on the Active Object"
     bl_options = {'REGISTER', 'UNDO'}
 
-    face_type = EnumProperty(
+    face_type: EnumProperty(
             name="Face Type",
             items=(('tris', "Tris", "Colorize Triangles in the Mesh"),
                    ('ngons', "Ngons", "Colorize Ngons in the Mesh")),
@@ -278,19 +278,19 @@ class FaceTypeSelect(Operator):
 
 
 class MeshCheckCollectionGroup(PropertyGroup):
-    mesh_check_use = BoolProperty(
+    mesh_check_use: BoolProperty(
             name="Mesh Check",
             description="Display Mesh Check options",
             default=False,
             update=updateBGLData
             )
-    display_faces = BoolProperty(
+    display_faces: BoolProperty(
             name="Display Faces",
             description="Use BGL to display Ngons and Tris of the mesh",
             default=False,
             update=updateBGLData
             )
-    edge_width = FloatProperty(
+    edge_width: FloatProperty(
             name="Width",
             description="Drawn Edges width in pixels",
             min=1.0,
@@ -299,13 +299,13 @@ class MeshCheckCollectionGroup(PropertyGroup):
             subtype='PIXEL',
             update=updateBGLData
             )
-    finer_lines_behind_use = BoolProperty(
+    finer_lines_behind_use: BoolProperty(
             name="Finer Lines behind",
             description="Display partially hidden edges finer in non-occlude mode",
             default=True,
             update=updateBGLData
             )
-    custom_tri_color = FloatVectorProperty(
+    custom_tri_color: FloatVectorProperty(
             name="Tri Color",
             description="Custom color for the Triangles",
             min=0.0,
@@ -315,7 +315,7 @@ class MeshCheckCollectionGroup(PropertyGroup):
             subtype='COLOR',
             update=updateBGLData
             )
-    custom_ngons_color = FloatVectorProperty(
+    custom_ngons_color: FloatVectorProperty(
             name="Ngons Color",
             description="Custom color for the Ngons",
             min=0.0,
@@ -325,7 +325,7 @@ class MeshCheckCollectionGroup(PropertyGroup):
             subtype='COLOR',
             update=updateBGLData
             )
-    face_opacity = FloatProperty(
+    face_opacity: FloatProperty(
             name="Face Opacity",
             description="Opacity of the color for the face",
             min=0.0,
diff --git a/mesh_extra_tools/mesh_cut_faces.py b/mesh_extra_tools/mesh_cut_faces.py
index cd710a07..195d491f 100644
--- a/mesh_extra_tools/mesh_cut_faces.py
+++ b/mesh_extra_tools/mesh_cut_faces.py
@@ -118,7 +118,7 @@ class MESH_xOT_deselect_boundary(Operator):
                       "so the tool will not have results")
     bl_options = {'REGISTER', 'UNDO'}
 
-    keep_cap_edges = BoolProperty(
+    keep_cap_edges: BoolProperty(
                         name="Keep Cap Edges",
                         description="Keep quad strip cap edges selected",
                         default=False
@@ -164,19 +164,19 @@ class MESH_xOT_cut_faces(Operator):
     SUBD_FAN = 2
     SUBD_STRAIGHT_CUT = 3
 
-    num_cuts = IntProperty(
+    num_cuts: IntProperty(
             name="Number of Cuts",
             default=1,
             min=1,
             max=100,
             subtype='UNSIGNED'
             )
-    use_single_edge = BoolProperty(
+    use_single_edge: BoolProperty(
             name="Quad/Tri Mode",
             description="Cut boundary faces",
             default=False
             )
-    corner_type = EnumProperty(
+    corner_type: EnumProperty(
             items=[('SUBD_INNERVERT', "Inner Vert", ""),
                    ('SUBD_PATH', "Path", ""),
                    ('SUBD_FAN', "Fan", ""),
@@ -186,7 +186,7 @@ class MESH_xOT_cut_faces(Operator):
             description="How to subdivide quad corners",
             default='SUBD_STRAIGHT_CUT'
             )
-    use_grid_fill = BoolProperty(
+    use_grid_fill: BoolProperty(
             name="Use Grid Fill",
             description="Fill fully enclosed faces with a grid",
             default=True
diff --git a/mesh_extra_tools/mesh_edge_roundifier.py b/mesh_extra_tools/mesh_edge_roundifier.py
index 609d0df7..0ab20a69 100644
--- a/mesh_extra_tools/mesh_edge_roundifier.py
+++ b/mesh_extra_tools/mesh_edge_roundifier.py
@@ -264,7 +264,7 @@ class EdgeRoundifier(Operator):
     threshold = 0.0005
     obj = None
 
-    edgeScaleFactor = FloatProperty(
+    edgeScaleFactor: FloatProperty(
             name="",
             description="Set the Factor of scaling",
             default=1.0,
@@ -272,7 +272,7 @@ class EdgeRoundifier(Operator):
             step=0.5,
             precision=5
             )
-    r = FloatProperty(
+    r: FloatProperty(
             name="",
             description="User Defined arc steepness by a Radius\n"
                         "Enabled only if Entry mode is set to Radius\n",
@@ -281,7 +281,7 @@ class EdgeRoundifier(Operator):
             step=0.1,
             precision=3
             )
-    a = FloatProperty(
+    a: FloatProperty(
             name="",
             description="User defined arc steepness calculated from an Angle\n"
                         "Enabled only if Entry mode is set to Angle and\n"
@@ -291,74 +291,74 @@ class EdgeRoundifier(Operator):
             step=0.5,
             precision=1
             )
-    n = IntProperty(
+    n: IntProperty(
             name="",
             description="Arc subdivision level",
             default=4,
             min=1, max=100,
             step=1
             )
-    flip = BoolProperty(
+    flip: BoolProperty(
             name="Flip",
             description="If True, flip the side of the selected edges where the arcs are drawn",
             default=False
             )
-    invertAngle = BoolProperty(
+    invertAngle: BoolProperty(
             name="Invert",
             description="If True, uses an inverted angle to draw the arc (360 degrees - angle)",
             default=False
             )
-    fullCircles = BoolProperty(
+    fullCircles: BoolProperty(
             name="Circles",
             description="If True, uses an angle of 360 degrees to draw the arcs",
             default=False
             )
-    bothSides = BoolProperty(
+    bothSides: BoolProperty(
             name="Both sides",
             description="If True, draw arcs on both sides of the selected edges",
             default=False
             )
-    drawArcCenters = BoolProperty(
+    drawArcCenters: BoolProperty(
             name="Centers",
             description="If True, draws a vertex for each spin center",
             default=False
             )
-    removeEdges = BoolProperty(
+    removeEdges: BoolProperty(
             name="Edges",
             description="If True removes the Original selected edges",
             default=False
             )
-    removeScaledEdges = BoolProperty(
+    removeScaledEdges: BoolProperty(
             name="Scaled edges",
             description="If True removes the Scaled edges (not part of the arcs)",
             default=False
             )
-    connectArcWithEdge = BoolProperty(
+    connectArcWithEdge: BoolProperty(
             name="Arc - Edge",
             description="Connect Arcs to Edges",
             default=False
             )
-    connectArcs = BoolProperty(
+    connectArcs: BoolProperty(
             name="Arcs",
             description="Connect subsequent Arcs",
             default=False
             )
-    connectScaledAndBase = BoolProperty(
+    connectScaledAndBase: BoolProperty(
             name="Scaled - Base Edge",
             description="Connect Scaled to Base Edge",
             default=False
             )
-    connectArcsFlip = BoolProperty(
+    connectArcsFlip: BoolProperty(
             name="Flip Arcs",
             description="Flip the connection of subsequent Arcs",
             default=False
             )
-    connectArcWithEdgeFlip = BoolProperty(
+    connectArcWithEdgeFlip: BoolProperty(
             name="Flip Arc - Edge",
             description="Flip the connection of the Arcs to Edges",
             default=False
             )
-    axisAngle = FloatProperty(
+    axisAngle: FloatProperty(
             name="",
             description="Rotate Arc around the perpendicular axis",
             default=0.0,
@@ -366,7 +366,7 @@ class EdgeRoundifier(Operator):
             step=0.5,
             precision=1
             )
-    edgeAngle = FloatProperty(
+    edgeAngle: FloatProperty(
             name="",
             description="Rotate Arc around the Edge (Edge acts like as the axis)",
             default=0.0,
@@ -374,7 +374,7 @@ class EdgeRoundifier(Operator):
             step=0.5,
             precision=1
             )
-    offset = FloatProperty(
+    offset: FloatProperty(
             name="",
             description="Offset Arc perpendicular the Edge",
             default=0.0,
@@ -382,7 +382,7 @@ class EdgeRoundifier(Operator):
             step=0.1,
             precision=5
             )
-    offset2 = FloatProperty(
+    offset2: FloatProperty(
             name="",
             description="Offset Arc in parallel to the Edge",
             default=0.0,
@@ -390,7 +390,7 @@ class EdgeRoundifier(Operator):
             step=0.1,
             precision=5
             )
-    ellipticFactor = FloatProperty(
+    ellipticFactor: FloatProperty(
             name="",
             description="Make Arc elliptic",
             default=0.0,
@@ -399,7 +399,7 @@ class EdgeRoundifier(Operator):
             precision=5
             )
     workModeItems = [("Normal", "Normal", ""), ("Reset", "Reset", "")]
-    workMode = EnumProperty(
+    workMode: EnumProperty(
             items=workModeItems,
             name="",
             default='Normal',
@@ -407,7 +407,7 @@ class EdgeRoundifier(Operator):
                         "Reset - changes back the parameters to their default values"
             )
     entryModeItems = [("Radius", "Radius", ""), ("Angle", "Angle", "")]
-    entryMode = EnumProperty(
+    entryMode: EnumProperty(
             items=entryModeItems,
             name="",
             default='Angle',
@@ -418,14 +418,14 @@ class EdgeRoundifier(Operator):
             ("Spin", "Spin", ""), ("V1", "V1", ""),
             ("Edge", "Edge", ""), ("V2", "V2", "")
             ]
-    rotateCenter = EnumProperty(
+    rotateCenter: EnumProperty(
             items=rotateCenterItems,
             name="",
             default='Edge',
             description="Rotate center for spin axis rotate"
             )
     arcModeItems = [("FullEdgeArc", "Full", "Full"), ('HalfEdgeArc', "Half", "Half")]
-    arcMode = EnumProperty(
+    arcMode: EnumProperty(
             items=arcModeItems,
             name="",
             default='FullEdgeArc',
@@ -437,7 +437,7 @@ class EdgeRoundifier(Operator):
             ('72', "72", "PentagonCircle (5 sides)"), ('60', "60", "HexagonCircle (6 sides)"),
             ('45', "45", "OctagonCircle (8 sides)"), ('30', "30", "DodecagonCircle (12 sides)")
             ]
-    angleEnum = EnumProperty(
+    angleEnum: EnumProperty(
             items=angleItems,
             name="",
             default='180',
@@ -445,7 +445,7 @@ class EdgeRoundifier(Operator):
             )
     refItems = [('ORG', "Origin", "Use Origin Location"), ('CUR', "3D Cursor", "Use 3DCursor Location"),
                 ('EDG', "Edge", "Use Individual Edge Reference")]
-    referenceLocation = EnumProperty(
+    referenceLocation: EnumProperty(
             items=refItems,
             name="",
             default='ORG',
@@ -456,7 +456,7 @@ class EdgeRoundifier(Operator):
             (YZ, "YZ", "YZ Plane (X=0)"),
             (XZ, "XZ", "XZ Plane (Y=0)")
             ]
-    planeEnum = EnumProperty(
+    planeEnum: EnumProperty(
             items=planeItems,
             name="",
             default='XY',
@@ -467,7 +467,7 @@ class EdgeRoundifier(Operator):
             ('CENTER', "Center", "Center of the Edge"),
             ('V2', "V2", "v2 - Second Edge's Vertex")
             ]
-    edgeScaleCenterEnum = EnumProperty(
+    edgeScaleCenterEnum: EnumProperty(
             items=edgeScaleCenterItems,
             name="Edge scale center",
             default='CENTER',
diff --git a/mesh_extra_tools/mesh_edges_floor_plan.py b/mesh_extra_tools/mesh_edges_floor_plan.py
index bc4b1610..1804c79a 100644
--- a/mesh_extra_tools/mesh_edges_floor_plan.py
+++ b/mesh_extra_tools/mesh_edges_floor_plan.py
@@ -55,24 +55,24 @@ class MESH_OT_edges_floor_plan(Operator):
     bl_description = "Top View, Extrude Flat Along Edges"
     bl_options = {'REGISTER', 'UNDO'}
 
-    wid = FloatProperty(
+    wid: FloatProperty(
             name="Wall width:",
             description="Set the width of the generated walls\n",
             default=0.1,
             min=0.001, max=30000
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name="Inner height:",
             description="Set the height of the inner wall edges",
             default=0.0,
             min=0, max=10
             )
-    connect_ends = BoolProperty(
+    connect_ends: BoolProperty(
             name="Connect Ends",
             description="Connect the ends of the boundary Edge loops",
             default=False
             )
-    repeat_cleanup = IntProperty(
+    repeat_cleanup: IntProperty(
             name="Recursive Prepare",
             description="Number of times that the preparation phase runs\n"
                         "at the start of the script\n"
@@ -94,25 +94,25 @@ class MESH_OT_edges_floor_plan(Operator):
              "Useful for complex meshes, however works best on flat surfaces\n"
              "as the extrude direction has to be defined")
             ]
-    fill_type = EnumProperty(
+    fill_type: EnumProperty(
             name="Fill Type",
             items=fill_items,
             description="Choose the method for creating geometry",
             default='SOLIDIFY'
             )
-    keep_faces = BoolProperty(
+    keep_faces: BoolProperty(
             name="Keep Faces",
             description="Keep or not the fill faces\n"
                         "Can depend on Remove Ngons state",
             default=False
             )
-    tri_faces = BoolProperty(
+    tri_faces: BoolProperty(
             name="Triangulate Faces",
             description="Triangulate the created fill faces\n"
                         "Sometimes can lead to unsatisfactory results",
             default=False
             )
-    initial_extrude = FloatVectorProperty(
+    initial_extrude: FloatVectorProperty(
             name="Initial Extrude",
             description="",
             default=(0.0, 0.0, 0.1),
@@ -121,7 +121,7 @@ class MESH_OT_edges_floor_plan(Operator):
             precision=3,
             size=3
             )
-    remove_ngons = BoolProperty(
+    remove_ngons: BoolProperty(
             name="Remove Ngons",
             description="Keep or not the Ngon Faces\n"
                         "Note about limitations:\n"
@@ -129,13 +129,13 @@ class MESH_OT_edges_floor_plan(Operator):
                         "Removing the Ngons can lead to no geometry created",
             default=True
             )
-    offset = FloatProperty(
+    offset: FloatProperty(
             name="Wall Offset:",
             description="Set the offset for the Solidify modifier",
             default=0.0,
             min=-1.0, max=1.0
             )
-    only_rim = BoolProperty(
+    only_rim: BoolProperty(
             name="Rim Only",
             description="Solidify Fill Rim only option",
             default=False
diff --git a/mesh_extra_tools/mesh_edges_length.py b/mesh_extra_tools/mesh_edges_length.py
index 0c1f3cb4..eac31a2f 100644
--- a/mesh_extra_tools/mesh_edges_length.py
+++ b/mesh_extra_tools/mesh_edges_length.py
@@ -64,11 +64,11 @@ class LengthSet(Operator):
                       "Note: works only with Edges that not share a vertex")
     bl_options = {'REGISTER', 'UNDO'}
 
-    old_length = FloatProperty(
+    old_length: FloatProperty(
             name="Original length",
             options={'HIDDEN'},
             )
-    set_length_type = EnumProperty(
+    set_length_type: EnumProperty(
             items=[
                 ('manual', "Manual",
                  "Input manually the desired Target Length"),
@@ -77,14 +77,14 @@ class LengthSet(Operator):
             ],
             name="Set Type of Input",
             )
-    target_length = FloatProperty(
+    target_length: FloatProperty(
             name="Target Length",
             description="Input a value for an Edges Length target",
             default=1.00,
             unit='LENGTH',
             precision=5
             )
-    existing_length = EnumProperty(
+    existing_length: EnumProperty(
             items=[
                 ('min', "Shortest",
                  "Set all to shortest Edge of selection"),
@@ -98,7 +98,7 @@ class LengthSet(Operator):
             ],
             name="Existing length"
             )
-    mode = EnumProperty(
+    mode: EnumProperty(
             items=[
                 ('fixed', "Fixed", "Fixed"),
                 ('increment', "Increment", "Increment"),
@@ -106,7 +106,7 @@ class LengthSet(Operator):
             ],
             name="Mode"
             )
-    behaviour = EnumProperty(
+    behaviour: EnumProperty(
             items=[
                 ('proportional', "Proportional",
                  "Move vertex locations proportionally to the center of the Edge"),
diff --git a/mesh_extra_tools/mesh_edgetools.py b/mesh_extra_tools/mesh_edgetools.py
index cfd6c75e..08959e7b 100644
--- a/mesh_extra_tools/mesh_edgetools.py
+++ b/mesh_extra_tools/mesh_edgetools.py
@@ -654,17 +654,17 @@ class Extend(Operator):
     bl_description = "Extend the selected edges of vertex pairs"
     bl_options = {'REGISTER', 'UNDO'}
 
-    di1 = BoolProperty(
+    di1: BoolProperty(
             name="Forwards",
             description="Extend the edge forwards",
             default=True
             )
-    di2 = BoolProperty(
+    di2: BoolProperty(
             name="Backwards",
             description="Extend the edge backwards",
             default=False
             )
-    length = FloatProperty(
+    length: FloatProperty(
             name="Length",
             description="Length to extend the edge",
             min=0.0, max=1024.0,
@@ -776,7 +776,7 @@ class Spline(Operator):
     bl_description = "Create a spline interplopation between two edges"
     bl_options = {'REGISTER', 'UNDO'}
 
-    alg = EnumProperty(
+    alg: EnumProperty(
             name="Spline Algorithm",
             items=[('Blender', "Blender", "Interpolation provided through mathutils.geometry"),
                     ('Hermite', "C-Spline", "C-spline interpolation"),
@@ -784,31 +784,31 @@ class Spline(Operator):
                     ('B-Spline', "B-Spline", "B-Spline interpolation")],
             default='Bezier'
             )
-    segments = IntProperty(
+    segments: IntProperty(
             name="Segments",
             description="Number of segments to use in the interpolation",
             min=2, max=4096,
             soft_max=1024,
             default=32
             )
-    flip1 = BoolProperty(
+    flip1: BoolProperty(
             name="Flip Edge",
             description="Flip the direction of the spline on Edge 1",
             default=False
             )
-    flip2 = BoolProperty(
+    flip2: BoolProperty(
             name="Flip Edge",
             description="Flip the direction of the spline on Edge 2",
             default=False
             )
-    ten1 = FloatProperty(
+    ten1: FloatProperty(
             name="Tension",
             description="Tension on Edge 1",
             min=-4096.0, max=4096.0,
             soft_min=-8.0, soft_max=8.0,
             default=1.0
             )
-    ten2 = FloatProperty(
+    ten2: FloatProperty(
             name="Tension",
             description="Tension on Edge 2",
             min=-4096.0, max=4096.0,
@@ -947,50 +947,50 @@ class Ortho(Operator):
     bl_description = "Creates new edges within an angle from vertices of selected edges"
     bl_options = {'REGISTER', 'UNDO'}
 
-    vert1 = BoolProperty(
+    vert1: BoolProperty(
             name="Vertice 1",
             description="Enable edge creation for Vertice 1",
             default=True
             )
-    vert2 = BoolProperty(
+    vert2: BoolProperty(
             name="Vertice 2",
             description="Enable edge creation for Vertice 2",
             default=True
             )
-    vert3 = BoolProperty(
+    vert3: BoolProperty(
             name="Vertice 3",
             description="Enable edge creation for Vertice 3",
             default=True
             )
-    vert4 = BoolProperty(
+    vert4: BoolProperty(
             name="Vertice 4",
             description="Enable edge creation for Vertice 4",
             default=True
             )
-    pos = BoolProperty(
+    pos: BoolProperty(
             name="Positive",
             description="Enable creation of positive direction edges",
             default=True
             )
-    neg = BoolProperty(
+    neg: BoolProperty(
             name="Negative",
             description="Enable creation of negative direction edges",
             default=True
             )
-    angle = FloatProperty(
+    angle: FloatProperty(
             name="Angle",
             description="Define the angle off of the originating edge",
             min=0.0, max=180.0,
             default=90.0
             )
-    length = FloatProperty(
+    length: FloatProperty(
             name="Length",
             description="Length of created edges",
             min=0.0, max=1024.0,
             default=1.0
             )
     # For when only one edge is selected (Possible feature to be testd):
-    plane = EnumProperty(
+    plane: EnumProperty(
             name="Plane",
             items=[("XY", "X-Y Plane", "Use the X-Y plane as the plane of creation"),
                    ("XZ", "X-Z Plane", "Use the X-Z plane as the plane of creation"),
@@ -1146,7 +1146,7 @@ class Shaft(Operator):
     shaftType = 0
 
     # For tracking if the user has changed selection:
-    last_edge = IntProperty(
+    last_edge: IntProperty(
             name="Last Edge",
             description="Tracks if user has changed selected edges",
             min=0, max=1,
@@ -1154,36 +1154,36 @@ class Shaft(Operator):
             )
     last_flip = False
 
-    edge = IntProperty(
+    edge: IntProperty(
             name="Edge",
             description="Edge to shaft around",
             min=0, max=1,
             default=0
             )
-    flip = BoolProperty(
+    flip: BoolProperty(
             name="Flip Second Edge",
             description="Flip the perceived direction of the second edge",
             default=False
             )
-    radius = FloatProperty(
+    radius: FloatProperty(
             name="Radius",
             description="Shaft Radius",
             min=0.0, max=1024.0,
             default=1.0
             )
-    start = FloatProperty(
+    start: FloatProperty(
             name="Starting Angle",
             description="Angle to start the shaft at",
             min=-360.0, max=360.0,
             default=0.0
             )
-    finish = FloatProperty(
+    finish: FloatProperty(
             name="Ending Angle",
             description="Angle to end the shaft at",
             min=-360.0, max=360.0,
             default=360.0
             )
-    segments = IntProperty(
+    segments: IntProperty(
             name="Shaft Segments",
             description="Number of segments to use in the shaft",
             min=1, max=4096,
@@ -1451,22 +1451,22 @@ class Slice(Operator):
     bl_description = "Cut edges at the plane defined by a selected face"
     bl_options = {'REGISTER', 'UNDO'}
 
-    make_copy = BoolProperty(
+    make_copy: BoolProperty(
             name="Make Copy",
             description="Make new vertices at intersection points instead of splitting the edge",
             default=False
             )
-    rip = BoolProperty(
+    rip: BoolProperty(
             name="Rip",
             description="Split into two edges that DO NOT share an intersection vertex",
             default=True
             )
-    pos = BoolProperty(
+    pos: BoolProperty(
             name="Positive",
             description="Remove the portion on the side of the face normal",
             default=False
             )
-    neg = BoolProperty(
+    neg: BoolProperty(
             name="Negative",
             description="Remove the portion on the side opposite of the face normal",
             default=False
@@ -1641,7 +1641,7 @@ class Project(Operator):
                       "(Active is projected onto the rest)")
     bl_options = {'REGISTER', 'UNDO'}
 
-    make_copy = BoolProperty(
+    make_copy: BoolProperty(
             name="Make Copy",
             description="Make duplicates of the vertices instead of altering them",
             default=False
@@ -1719,22 +1719,22 @@ class Project_End(Operator):
                       "edges closest to a plane onto that plane")
     bl_options = {'REGISTER', 'UNDO'}
 
-    make_copy = BoolProperty(
+    make_copy: BoolProperty(
             name="Make Copy",
             description="Make a duplicate of the vertice instead of moving it",
             default=False
             )
-    keep_length = BoolProperty(
+    keep_length: BoolProperty(
             name="Keep Edge Length",
             description="Maintain edge lengths",
             default=False
             )
-    use_force = BoolProperty(
+    use_force: BoolProperty(
             name="Use opposite vertices",
             description="Force the usage of the vertices at the other end of the edge",
             default=False
             )
-    use_normal = BoolProperty(
+    use_normal: BoolProperty(
             name="Project along normal",
             description="Use the plane's normal as the projection direction",
             default=False
diff --git a/mesh_extra_tools/mesh_fastloop.py b/mesh_extra_tools/mesh_fastloop.py
index 0bfcc405..6fd08de2 100644
--- a/mesh_extra_tools/mesh_fastloop.py
+++ b/mesh_extra_tools/mesh_fastloop.py
@@ -68,7 +68,7 @@ class OBJECT_OT_FastLoop(Operator):
     bl_description = ("Create multiple edge loops in succession\n"
                       "Runs modal until ESC is pressed twice")
 
-    active = BoolProperty(
+    active: BoolProperty(
                 name="active",
                 default=False
                 )
diff --git a/mesh_extra_tools/mesh_filletplus.py b/mesh_extra_tools/mesh_filletplus.py
index f3c9cbdf..bc38d2ea 100644
--- a/mesh_extra_tools/mesh_filletplus.py
+++ b/mesh_extra_tools/mesh_filletplus.py
@@ -297,7 +297,7 @@ class MESH_OT_fillet_plus(Operator):
                       "Note: Works on a mesh whose all faces share the same normal")
     bl_options = {"REGISTER", "UNDO"}
 
-    adj = FloatProperty(
+    adj: FloatProperty(
             name="",
             description="Size of the filleted corners",
             default=0.1,
@@ -305,25 +305,25 @@ class MESH_OT_fillet_plus(Operator):
             step=1,
             precision=3
             )
-    n = IntProperty(
+    n: IntProperty(
             name="",
             description="Subdivision of the filleted corners",
             default=3,
             min=1, max=50,
             step=1
             )
-    out = BoolProperty(
+    out: BoolProperty(
             name="Outside",
             description="Fillet towards outside",
             default=False
             )
-    flip = BoolProperty(
+    flip: BoolProperty(
             name="Flip",
             description="Flip the direction of the Fillet\n"
                         "Only available if Outside option is not active",
             default=False
             )
-    radius = BoolProperty(
+    radius: BoolProperty(
             name="Radius",
             description="Use radius for the size of the filleted corners",
             default=False
diff --git a/mesh_extra_tools/mesh_help.py b/mesh_extra_tools/mesh_help.py
index 5df85600..30047a8b 100644
--- a/mesh_extra_tools/mesh_help.py
+++ b/mesh_extra_tools/mesh_help.py
@@ -24,12 +24,12 @@ class MESH_OT_extra_tools_help(Operator):
     bl_description = "Tool Help - click to read some basic information"
     bl_options = {'REGISTER'}
 
-    help_ids = StringProperty(
+    help_ids: StringProperty(
             name="ID of the Operator to display",
             options={'HIDDEN'},
             default="default"
             )
-    popup_size = IntProperty(
+    popup_size: IntProperty(
             name="Size of the Help Pop-up Menu",
             default=350,
             min=100,
diff --git a/mesh_extra_tools/mesh_mextrude_plus.py b/mesh_extra_tools/mesh_mextrude_plus.py
index de5f561b..5fa2aa2b 100644
--- a/mesh_extra_tools/mesh_mextrude_plus.py
+++ b/mesh_extra_tools/mesh_mextrude_plus.py
@@ -84,42 +84,42 @@ class MExtrude(Operator):
                       "Scaling, Variation, Randomization")
     bl_options = {"REGISTER", "UNDO", "PRESET"}
 
-    off = FloatProperty(
+    off: FloatProperty(
             name="Offset",
             soft_min=0.001, soft_max=10,
             min=-100, max=100,
             default=1.0,
             description="Translation"
             )
-    offx = FloatProperty(
+    offx: FloatProperty(
             name="Loc X",
             soft_min=-10.0, soft_max=10.0,
             min=-100.0, max=100.0,
             default=0.0,
             description="Global Translation X"
             )
-    offy = FloatProperty(
+    offy: FloatProperty(
             name="Loc Y",
             soft_min=-10.0, soft_max=10.0,
             min=-100.0, max=100.0,
             default=0.0,
             description="Global Translation Y"
             )
-    offz = FloatProperty(
+    offz: FloatProperty(
             name="Loc Z",
             soft_min=-10.0, soft_max=10.0,
             min=-100.0, max=100.0,
             default=0.0,
             description="Global Translation Z"
             )
-    rotx = FloatProperty(
+    rotx: FloatProperty(
             name="Rot X",
             min=-85, max=85,
             soft_min=-30, soft_max=30,
             default=0,
             description="X Rotation"
             )
-    roty = FloatProperty(
+    roty: FloatProperty(
             name="Rot Y",
             min=-85, max=85,
             soft_min=-30,
@@ -127,96 +127,96 @@ class MExtrude(Operator):
             default=0,
             description="Y Rotation"
             )
-    rotz = FloatProperty(
+    rotz: FloatProperty(
             name="Rot Z",
             min=-85, max=85,
             soft_min=-30, soft_max=30,
             default=-0,
             description="Z Rotation"
             )
-    nrotx = FloatProperty(
+    nrotx: FloatProperty(
             name="N Rot X",
             min=-85, max=85,
             soft_min=-30, soft_max=30,
             default=0,
             description="Normal X Rotation"
             )
-    nroty = FloatProperty(
+    nroty: FloatProperty(
             name="N Rot Y",
             min=-85, max=85,
             soft_min=-30, soft_max=30,
             default=0,
             description="Normal Y Rotation"
             )
-    nrotz = FloatProperty(
+    nrotz: FloatProperty(
             name="N Rot Z",
             min=-85, max=85,
             soft_min=-30, soft_max=30,
             default=-0,
             description="Normal Z Rotation"
             )
-    sca = FloatProperty(
+    sca: FloatProperty(
             name="Scale",
             min=0.01, max=10,
             soft_min=0.5, soft_max=1.5,
             default=1.0,
             description="Scaling of the selected faces after extrusion"
             )
-    var1 = FloatProperty(
+    var1: FloatProperty(
             name="Offset Var", min=-10, max=10,
             soft_min=-1, soft_max=1,
             default=0,
             description="Offset variation"
             )
-    var2 = FloatProperty(
+    var2: FloatProperty(
             name="Rotation Var",
             min=-10, max=10,
             soft_min=-1, soft_max=1,
             default=0,
             description="Rotation variation"
             )
-    var3 = FloatProperty(
+    var3: FloatProperty(
             name="Scale Noise",
             min=-10, max=10,
             soft_min=-1, soft_max=1,
             default=0,
             description="Scaling noise"
             )
-    var4 = IntProperty(
+    var4: IntProperty(
             name="Probability",
             min=0, max=100,
             default=100,
             description="Probability, chance of extruding a face"
             )
-    num = IntProperty(
+    num: IntProperty(
             name="Repeat",
             min=1, max=500,
             soft_max=100,
             default=5,
             description="Repetitions"
             )
-    ran = IntProperty(
+    ran: IntProperty(
             name="Seed",
             min=-9999, max=9999,
             default=0,
             description="Seed to feed random values"
             )
-    opt1 = BoolProperty(
+    opt1: BoolProperty(
             name="Polygon coordinates",
             default=True,
             description="Polygon coordinates, Object coordinates"
             )
-    opt2 = BoolProperty(
+    opt2: BoolProperty(
             name="Proportional offset",
             default=False,
             description="Scale * Offset"
             )
-    opt3 = BoolProperty(
+    opt3: BoolProperty(
             name="Per step rotation noise",
             default=False,
             description="Per step rotation noise, Initial rotation noise"
             )
-    opt4 = BoolProperty(
+    opt4: BoolProperty(
             name="Per step scale noise",
             default=False,
             description="Per step scale noise, Initial scale noise"
diff --git a/mesh_extra_tools/mesh_offset_edges.py b/mesh_extra_tools/mesh_offset_edges.py
index e92c5430..b6d760b1 100644
--- a/mesh_extra_tools/mesh_offset_edges.py
+++ b/mesh_extra_tools/mesh_offset_edges.py
@@ -509,7 +509,7 @@ class OffsetEdges(Operator):
                       "Operates only on separate Edge loops selections")
     bl_options = {'REGISTER', 'UNDO'}
 
-    geometry_mode = EnumProperty(
+    geometry_mode: EnumProperty(
             items=[('offset', "Offset", "Offset edges"),
                    ('extrude', "Extrude", "Extrude edges"),
                    ('move', "Move", "Move selected edges")],
@@ -517,38 +517,38 @@ class OffsetEdges(Operator):
             default='offset',
             update=use_cashes
             )
-    width = FloatProperty(
+    width: FloatProperty(
             name="Width",
             default=.2,
             precision=4, step=1,
             update=use_cashes
             )
-    flip_width = BoolProperty(
+    flip_width: BoolProperty(
             name="Flip Width",
             default=False,
             description="Flip width direction",
             update=use_cashes
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name="Depth",
             default=.0,
             precision=4, step=1,
             update=use_cashes
             )
-    flip_depth = BoolProperty(
+    flip_depth: BoolProperty(
             name="Flip Depth",
             default=False,
             description="Flip depth direction",
             update=use_cashes
             )
-    depth_mode = EnumProperty(
+    depth_mode: EnumProperty(
             items=[('angle', "Angle", "Angle"),
                    ('depth', "Depth", "Depth")],
             name="Depth mode",
             default='angle',
             update=use_cashes
             )
-    angle = FloatProperty(
+    angle: FloatProperty(
             name="Angle", default=0,
             precision=3, step=.1,
             min=-2 * pi, max=2 * pi,
@@ -556,33 +556,33 @@ class OffsetEdges(Operator):
             description="Angle",
             update=use_cashes
             )
-    flip_angle = BoolProperty(
+    flip_angle: BoolProperty(
             name="Flip Angle",
             default=False,
             description="Flip Angle",
             update=use_cashes
             )
-    follow_face = BoolProperty(
+    follow_face: BoolProperty(
             name="Follow Face",
             default=False,
             description="Offset along faces around"
             )
-    mirror_modifier = BoolProperty(
+    mirror_modifier: BoolProperty(
             name="Mirror Modifier",
             default=False,
             description="Take into account of Mirror modifier"
             )
-    edge_rail = BoolProperty(
+    edge_rail: BoolProperty(
             name="Edge Rail",
             default=False,
             description="Align vertices along inner edges"
             )
-    edge_rail_only_end = BoolProperty(
+    edge_rail_only_end: BoolProperty(
             name="Edge Rail Only End",
             default=False,
             description="Apply edge rail to end verts only"
             )
-    threshold = FloatProperty(
+    threshold: FloatProperty(
             name="Flat Face Threshold",
             default=radians(0.05), precision=5,
             step=1.0e-4, subtype='ANGLE',
@@ -590,12 +590,12 @@ class OffsetEdges(Operator):
                         "below this value, those faces are regarded as flat",
             options={'HIDDEN'}
             )
-    caches_valid = BoolProperty(
+    caches_valid: BoolProperty(
             name="Caches Valid",
             default=False,
             options={'HIDDEN'}
             )
-    angle_presets = EnumProperty(
+    angle_presets: EnumProperty(
             items=[('0°', "0°", "0°"),
                    ('15°', "15°", "15°"),
                    ('30°', "30°", "30°"),
diff --git a/mesh_extra_tools/mesh_pen_tool.py b/mesh_extra_tools/mesh_pen_tool.py
index cd11f582..13e57081 100644
--- a/mesh_extra_tools/mesh_pen_tool.py
+++ b/mesh_extra_tools/mesh_pen_tool.py
@@ -258,7 +258,7 @@ def draw_callback_px(self, context):
 
 
 class pen_tool_properties(PropertyGroup):
-    a = FloatProperty(
+    a: FloatProperty(
             name="Alpha",
             description="Set Font Alpha",
             default=1.0,
@@ -266,29 +266,29 @@ class pen_tool_properties(PropertyGroup):
             step=10,
             precision=1
             )
-    fs = IntProperty(
+    fs: IntProperty(
             name="Size",
             description="Set Font Size",
             default=14,
             min=12, max=40,
             step=1
             )
-    b0 = BoolProperty(
+    b0: BoolProperty(
             name="Angles",
             description="Display All Angles on Drawn Edges",
             default=False
             )
-    b1 = BoolProperty(
+    b1: BoolProperty(
             name="Edge Length",
             description="Display All Lengths of Drawn Edges",
             default=False
             )
-    b2 = BoolProperty(
+    b2: BoolProperty(
             name="Mouse Location 3D",
             description="Display the location coordinates of the mouse cursor",
             default=False
             )
-    restore_view = BoolProperty(
+    restore_view: BoolProperty(
             name="Restore View",
             description="After the tool has finished, is the Viewport restored\n"
                         "to it's previous state",
@@ -351,7 +351,7 @@ class pen_tool_operator(Operator):
     bl_label = "Pen Tool"
     bl_options = {"REGISTER", "UNDO", "INTERNAL"}
 
-    text_location = IntProperty(
+    text_location: IntProperty(
             name="",
             default=0,
             options={'HIDDEN'}
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_index_select.py b/mesh_extra_tools/mesh_select_tools/mesh_index_select.py
index 492ff825..bc894924 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_index_select.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_index_select.py
@@ -25,7 +25,7 @@ class SelVertEdgeFace(Operator):
     bl_description = "Select Vertices, Edges, Faces by their indices"
     bl_options = {"REGISTER", "UNDO"}
 
-    select_type = EnumProperty(
+    select_type: EnumProperty(
             items=[
                    ('VERT', "Vertices", "Select Vertices by index"),
                    ('EDGE', "Edges", "Select Edges by index"),
@@ -35,7 +35,7 @@ class SelVertEdgeFace(Operator):
             description="",
             default='VERT',
             )
-    indice = FloatProperty(
+    indice: FloatProperty(
             name="Selected",
             default=0,
             min=0, max=100,
@@ -43,17 +43,17 @@ class SelVertEdgeFace(Operator):
             precision=2,
             subtype="PERCENTAGE"
             )
-    delta = BoolProperty(
+    delta: BoolProperty(
             name="Use Parameter",
             default=False,
             description="Select by Index / Parameter"
             )
-    flip = BoolProperty(
+    flip: BoolProperty(
             name="Reverse Order",
             default=False,
             description="Reverse selecting order"
             )
-    start_new = BoolProperty(
+    start_new: BoolProperty(
             name="Fresh Start",
             default=False,
             description="Start from no previous selection\n"
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_select_by_direction.py b/mesh_extra_tools/mesh_select_tools/mesh_select_by_direction.py
index 799f6002..cf25cf6f 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_select_by_direction.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_select_by_direction.py
@@ -162,7 +162,7 @@ class Select_init(Operator):
                       "defined by a vector with coordinates X, Y, Z")
     bl_options = {'REGISTER', 'UNDO'}
 
-    direction = FloatVectorProperty(
+    direction: FloatVectorProperty(
             name="Direction",
             description="Define a vector from the inputs axis X, Y, Z\n"
                         "Used to define the normals direction",
@@ -172,7 +172,7 @@ class Select_init(Operator):
             step=100,
             precision=2
             )
-    divergence = FloatProperty(
+    divergence: FloatProperty(
             name="Divergence",
             description="The number of degrees the selection may differ from the Vector\n"
                         "(Input is converted to radians)",
@@ -183,14 +183,14 @@ class Select_init(Operator):
             precision=2,
             subtype='ANGLE'
             )
-    extend = BoolProperty(
+    extend: BoolProperty(
             name="Extend",
             description="Extend the current selection",
             default=False
             )
     # The spaces we use
     spaces = (('LOC', 'Local', ''), ('GLO', 'Global', ''))
-    space = EnumProperty(
+    space: EnumProperty(
             items=spaces,
             name="Space",
             description="The space to interpret the directions in",
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_select_by_edge_length.py b/mesh_extra_tools/mesh_select_tools/mesh_select_by_edge_length.py
index 3ae489d5..cea9976f 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_select_by_edge_length.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_select_by_edge_length.py
@@ -183,7 +183,7 @@ class Select_init(bpy.types.Operator):
                       "Does not work in Vertex Select mode")
     bl_options = {'REGISTER', 'UNDO'}
 
-    edgeLength = FloatProperty(
+    edgeLength: FloatProperty(
             name="Edge length",
             description="The comparison scale in Blender units",
             default=1.0,
@@ -196,18 +196,18 @@ class Select_init(bpy.types.Operator):
     sizes = (('SMALL', 'Smaller', "Select items smaller or equal the size setting"),
              ('BIG', 'Bigger', "Select items bigger or equal to the size setting"),
              ('EQUAL', 'Equal', "Select edges equal to the size setting"))
-    edgeSize = EnumProperty(
+    edgeSize: EnumProperty(
             items=sizes,
             name="Edge comparison",
             description="Choose the relation to set edge length",
             default='EQUAL'
             )
-    extend = BoolProperty(
+    extend: BoolProperty(
             name="Extend",
             description="Extend the current selection",
             default=False
             )
-    start_new = BoolProperty(
+    start_new: BoolProperty(
             name="Fresh Start",
             default=False,
             description="Start from no previous selection"
@@ -215,7 +215,7 @@ class Select_init(bpy.types.Operator):
     # The spaces we use
     spaces = (('LOC', 'Local', "Use Local space"),
               ('GLO', 'Global', "Use Global Space"))
-    space = EnumProperty(
+    space: EnumProperty(
             items=spaces,
             name="Space",
             description="The space to interpret the directions in",
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_select_by_pi.py b/mesh_extra_tools/mesh_select_tools/mesh_select_by_pi.py
index f002d0d1..cecf564c 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_select_by_pi.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_select_by_pi.py
@@ -164,22 +164,22 @@ class Select_init(Operator):
                       "Number Pi (3.14 etc.) or e (2.71828 - Euler's number)")
     bl_options = {'REGISTER', 'UNDO'}
 
-    e = BoolProperty(
+    e: BoolProperty(
             name="Use e",
             description="Use e as the base of selection instead of pi",
             default=False
             )
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             description="Invert the selection result",
             default=False
             )
-    extend = BoolProperty(
+    extend: BoolProperty(
             name="Extend",
             description="Extend the current selection",
             default=False
             )
-    start_new = BoolProperty(
+    start_new: BoolProperty(
             name="Fresh Start",
             default=False,
             description="Start from no previous selection"
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_select_by_type.py b/mesh_extra_tools/mesh_select_tools/mesh_select_by_type.py
index 534740a1..7afe80fe 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_select_by_type.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_select_by_type.py
@@ -32,14 +32,14 @@ class DATA_OP_facetype_select(Operator):
     bl_description = "Select all faces of a certain type"
     bl_options = {'REGISTER', 'UNDO'}
 
-    face_type = EnumProperty(
+    face_type: EnumProperty(
             name="Select faces:",
             items=(("3", "Triangles", "Faces made up of 3 vertices"),
                    ("4", "Quads", "Faces made up of 4 vertices"),
                    ("5", "Ngons", "Faces made up of 5 and more vertices")),
             default="5"
             )
-    extend = BoolProperty(
+    extend: BoolProperty(
             name="Extend",
             description="Extend Selection",
             default=False
diff --git a/mesh_extra_tools/mesh_select_tools/mesh_select_connected_faces.py b/mesh_extra_tools/mesh_select_tools/mesh_select_connected_faces.py
index 1198f9ff..2c574f2d 100644
--- a/mesh_extra_tools/mesh_select_tools/mesh_select_connected_faces.py
+++ b/mesh_extra_tools/mesh_select_tools/mesh_select_connected_faces.py
@@ -107,14 +107,14 @@ class Select_init(Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # Iterations
-    iterations = IntProperty(
+    iterations: IntProperty(
             name="Iterations",
             description="Run the selection the given number of times",
             default=1,
             min=0, max=300,
             soft_min=0, soft_max=100
             )
-    extend = BoolProperty(
+    extend: BoolProperty(
             name="Extend",
             description="Extend the current selection",
             default=False
diff --git a/mesh_extra_tools/mesh_vertex_chamfer.py b/mesh_extra_tools/mesh_vertex_chamfer.py
index a80ba270..d3a4bc7b 100644
--- a/mesh_extra_tools/mesh_vertex_chamfer.py
+++ b/mesh_extra_tools/mesh_vertex_chamfer.py
@@ -44,26 +44,26 @@ class VertexChamfer(Operator):
     bl_description = "Tri chamfer selected vertices"
     bl_options = {'REGISTER', 'UNDO'}
 
-    factor = FloatProperty(
+    factor: FloatProperty(
             name="Factor",
             description="Size of the Champfer",
             default=0.1,
             min=0.0,
             soft_max=1.0
             )
-    relative = BoolProperty(
+    relative: BoolProperty(
             name="Relative",
             description="If Relative, Champfer size is relative to the edge length",
             default=True
             )
-    dissolve = BoolProperty(
+    dissolve: BoolProperty(
             name="Remove",
             description="Remove/keep the original selected vertices\n"
                         "Remove creates a new triangle face between the Champfer edges,\n"
                         "similar to the Dissolve Vertices operator",
             default=True
             )
-    displace = FloatProperty(
+    displace: FloatProperty(
             name="Displace",
             description="Active only if Remove option is disabled\n"
                         "Displaces the original selected vertices along the normals\n"
diff --git a/mesh_extra_tools/pkhg_faces.py b/mesh_extra_tools/pkhg_faces.py
index 08faf560..52ecdbc9 100644
--- a/mesh_extra_tools/pkhg_faces.py
+++ b/mesh_extra_tools/pkhg_faces.py
@@ -31,111 +31,111 @@ class MESH_OT_add_faces_to_object(Operator):
     bl_description = "Set parameters and build object with added faces"
     bl_options = {'REGISTER', 'UNDO', 'PRESET'}
 
-    reverse_faces = BoolProperty(
+    reverse_faces: BoolProperty(
             name="Reverse Faces",
             default=False,
             description="Revert the normals of selected faces"
             )
-    name_source_object = StringProperty(
+    name_source_object: StringProperty(
             name="Mesh",
             description="Choose a Source Mesh",
             default="Cube"
             )
-    remove_start_faces = BoolProperty(
+    remove_start_faces: BoolProperty(
             name="Remove Start Faces",
             default=True,
             description="Make a choice about removal of Original Faces"
             )
-    base_height = FloatProperty(
+    base_height: FloatProperty(
             name="Base Height",
             min=-20,
             soft_max=10, max=20,
             default=0.2,
             description="Set general Base Height"
             )
-    use_relative_base_height = BoolProperty(
+    use_relative_base_height: BoolProperty(
             name="Relative Base Height",
             default=False,
             description="Relative or absolute Base Height"
             )
-    second_height = FloatProperty(
+    second_height: FloatProperty(
             name="2nd height", min=-5,
             soft_max=5, max=20,
             default=0.2,
             description="Second height for various shapes"
             )
-    width = FloatProperty(
+    width: FloatProperty(
             name="Width Faces",
             min=-20, max=20,
             default=0.5,
             description="Set general width"
             )
-    repeat_extrude = IntProperty(
+    repeat_extrude: IntProperty(
             name="Repeat",
             min=1,
             soft_max=5, max=20,
             description="For longer base"
             )
-    move_inside = FloatProperty(
+    move_inside: FloatProperty(
             name="Move Inside",
             min=0.0,
             max=1.0,
             default=0.5,
             description="How much move to inside"
             )
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name="Thickness",
             soft_min=0.01, min=0,
             soft_max=5.0, max=20.0,
             default=0
             )
-    depth = FloatProperty(
+    depth: FloatProperty(
             name="Depth",
             min=-5,
             soft_max=5.0, max=20.0,
             default=0
             )
-    collapse_edges = BoolProperty(
+    collapse_edges: BoolProperty(
             name="Make Point",
             default=False,
             description="Collapse the vertices of edges"
             )
-    spike_base_width = FloatProperty(
+    spike_base_width: FloatProperty(
             name="Spike Base Width",
             default=0.4,
             min=-4.0,
             soft_max=1, max=20,
             description="Base width of a spike"
             )
-    base_height_inset = FloatProperty(
+    base_height_inset: FloatProperty(
             name="Base Height Inset",
             default=0.0,
             min=-5, max=5,
             description="To elevate or drop the Base height Inset"
             )
-    top_spike = FloatProperty(
+    top_spike: FloatProperty(
             name="Top Spike",
             default=1.0,
             min=-10.0, max=10.0,
             description="The Base Height of a spike"
             )
-    top_extra_height = FloatProperty(
+    top_extra_height: FloatProperty(
             name="Top Extra Height",
             default=0.0,
             min=-10.0, max=10.0,
             description="Add extra height"
             )
-    step_with_real_spike = BoolProperty(
+    step_with_real_spike: BoolProperty(
             name="Step with Real Spike",
             default=False,
             description="In stepped, use a real spike"
             )
-    use_relative = BoolProperty(
+    use_relative: BoolProperty(
             name="Use Relative",
             default=False,
             description="Change size using area, min or max"
             )
-    face_types = EnumProperty(
+    face_types: EnumProperty(
             name="Face Types",
             description="Different types of Faces",
             default="no",
@@ -151,36 +151,36 @@ class MESH_OT_add_faces_to_object(Operator):
                 ('bar', "Bar", "Bar"),
                 ]
             )
-    strange_boxed_effect = BoolProperty(
+    strange_boxed_effect: BoolProperty(
             name="Strange Effect",
             default=False,
             description="Do not show one extrusion"
             )
-    use_boundary = BoolProperty(
+    use_boundary: BoolProperty(
             name="Use Boundary",
             default=True
             )
-    use_even_offset = BoolProperty(
+    use_even_offset: BoolProperty(
             name="Even Offset",
             default=True
             )
-    use_relative_offset = BoolProperty(
+    use_relative_offset: BoolProperty(
             name="Relative Offset",
             default=True
             )
-    use_edge_rail = BoolProperty(
+    use_edge_rail: BoolProperty(
             name="Edge Rail",
             default=False
             )
-    use_outset = BoolProperty(
+    use_outset: BoolProperty(
             name="Outset",
             default=False
             )
-    use_select_inset = BoolProperty(
+    use_select_inset: BoolProperty(
             name="Inset",
             default=False
             )
-    use_interpolate = BoolProperty(
+    use_interpolate: BoolProperty(
             name="Interpolate",
             default=True
             )
diff --git a/mesh_extra_tools/random_vertices.py b/mesh_extra_tools/random_vertices.py
index cf0ee224..bd878218 100644
--- a/mesh_extra_tools/random_vertices.py
+++ b/mesh_extra_tools/random_vertices.py
@@ -94,12 +94,12 @@ class MESH_OT_random_vertices(Operator):
                       "or a multiplication of them and the Vertex Weights")
     bl_options = {'REGISTER', 'UNDO'}
 
-    vgfilter = BoolProperty(
+    vgfilter: BoolProperty(
             name="Vertex Group",
             description="Use Vertex Weight defined in the Active Group",
             default=False
             )
-    factor = FloatProperty(
+    factor: FloatProperty(
             name="Factor",
             description="Base Multiplier of the randomization effect",
             default=1
diff --git a/mesh_extra_tools/split_solidify.py b/mesh_extra_tools/split_solidify.py
index 6b830543..4f4aaedf 100644
--- a/mesh_extra_tools/split_solidify.py
+++ b/mesh_extra_tools/split_solidify.py
@@ -109,7 +109,7 @@ class MESH_OT_split_solidify(Operator):
     bl_description = "Split and Solidify selected Faces"
     bl_options = {"REGISTER", "UNDO"}
 
-    distance = FloatProperty(
+    distance: FloatProperty(
             name="",
             description="Distance of the splitted Faces to the original geometry",
             default=0.4,
@@ -117,7 +117,7 @@ class MESH_OT_split_solidify(Operator):
             step=1,
             precision=3
             )
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name="",
             description="Thickness of the splitted Faces",
             default=0.04,
@@ -125,7 +125,7 @@ class MESH_OT_split_solidify(Operator):
             step=1,
             precision=3
             )
-    random_dist = FloatProperty(
+    random_dist: FloatProperty(
             name="",
             description="Randomization factor of the splitted Faces' location",
             default=0.06,
@@ -133,16 +133,16 @@ class MESH_OT_split_solidify(Operator):
             step=1,
             precision=3
             )
-    loc_random = BoolProperty(
+    loc_random: BoolProperty(
             name="Random",
             description="Randomize the locations of splitted faces",
             default=False
             )
-    del_original = BoolProperty(
+    del_original: BoolProperty(
             name="Delete original faces",
             default=True
             )
-    normal_extr = EnumProperty(
+    normal_extr: EnumProperty(
             items=(('opt0', "Face", "Solidify along Face Normals"),
                    ('opt1', "Vertex", "Solidify along Vertex Normals")),
             name="Normal",
diff --git a/mesh_extra_tools/vertex_align.py b/mesh_extra_tools/vertex_align.py
index e5570fd1..6b9d2a51 100644
--- a/mesh_extra_tools/vertex_align.py
+++ b/mesh_extra_tools/vertex_align.py
@@ -203,7 +203,7 @@ class Vertex_align_coord_menu(Operator):
     bl_description = "Change the custom coordinates for aligning"
     bl_options = {'REGISTER', 'UNDO'}
 
-    def_axis_coord = FloatVectorProperty(
+    def_axis_coord: FloatVectorProperty(
             name="",
             description="Enter the values of coordinates",
             default=(0.0, 0.0, 0.0),
diff --git a/mesh_inset/__init__.py b/mesh_inset/__init__.py
index 973b57c4..94c9327d 100644
--- a/mesh_inset/__init__.py
+++ b/mesh_inset/__init__.py
@@ -58,7 +58,7 @@ class Inset(bpy.types.Operator):
     bl_description = "Make an inset polygon inside selection"
     bl_options = {'REGISTER', 'UNDO'}
 
-    inset_amount = FloatProperty(name="Amount",
+    inset_amount: FloatProperty(name="Amount",
         description="Amount to move inset edges",
         default=5.0,
         min=0.0,
@@ -66,7 +66,7 @@ class Inset(bpy.types.Operator):
         soft_min=0.0,
         soft_max=100.0,
         unit='LENGTH')
-    inset_height = FloatProperty(name="Height",
+    inset_height: FloatProperty(name="Height",
         description="Amount to raise inset faces",
         default=0.0,
         min=-10000.0,
@@ -74,10 +74,10 @@ class Inset(bpy.types.Operator):
         soft_min=-500.0,
         soft_max=500.0,
         unit='LENGTH')
-    region = BoolProperty(name="Region",
+    region: BoolProperty(name="Region",
         description="Inset selection as one region?",
         default=True)
-    scale = EnumProperty(name="Scale",
+    scale: EnumProperty(name="Scale",
         description="Scale for amount",
         items=[
             ('PERCENT', "Percent",
diff --git a/mesh_relax.py b/mesh_relax.py
index 1b177023..2d8022fc 100644
--- a/mesh_relax.py
+++ b/mesh_relax.py
@@ -97,7 +97,7 @@ class Relax(bpy.types.Operator):
     bl_label = 'Relax'
     bl_options = {'REGISTER', 'UNDO'}
 
-    iterations = IntProperty(name="Relax iterations",
+    iterations: IntProperty(name="Relax iterations",
                 default=1, min=0, max=100, soft_min=0, soft_max=10)
 
     @classmethod
diff --git a/mesh_tissue/colors_groups_exchanger.py b/mesh_tissue/colors_groups_exchanger.py
index 9b48b2fa..a511e951 100644
--- a/mesh_tissue/colors_groups_exchanger.py
+++ b/mesh_tissue/colors_groups_exchanger.py
@@ -65,27 +65,27 @@ class vertex_colors_to_vertex_groups(Operator):
     bl_description = ("Convert the active Vertex Color into a Vertex Group")
     bl_options = {'REGISTER', 'UNDO'}
 
-    red = BoolProperty(
+    red: BoolProperty(
             name="Red Channel",
             default=False,
             description="Convert Red Channel"
             )
-    green = BoolProperty(
+    green: BoolProperty(
             name="Green Channel",
             default=False,
             description="Convert Green Channel"
             )
-    blue = BoolProperty(
+    blue: BoolProperty(
             name="Blue Channel",
             default=False,
             description="Convert Blue Channel"
             )
-    value = BoolProperty(
+    value: BoolProperty(
             name="Value Channel",
             default=True,
             description="Convert Value Channel"
             )
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             default=False,
             description="Invert all Color Channels"
@@ -184,7 +184,7 @@ class vertex_group_to_vertex_colors(Operator):
     bl_description = ("Convert the active Vertex Group into a Vertex Color")
     bl_options = {'REGISTER', 'UNDO'}
 
-    channel = EnumProperty(
+    channel: EnumProperty(
             items=[('Blue', 'Blue Channel', 'Convert to Blue Channel'),
                    ('Green', 'Green Channel', 'Convert to Green Channel'),
                    ('Red', 'Red Channel', 'Convert to Red Channel'),
@@ -196,7 +196,7 @@ class vertex_group_to_vertex_colors(Operator):
             options={'LIBRARY_EDITABLE'}
             )
 
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             default=False,
             description="Invert Color Channel"
@@ -282,26 +282,26 @@ class curvature_to_vertex_groups(Operator):
                       "mesh. Is based on Dirty Vertex Color")
     bl_options = {'REGISTER', 'UNDO'}
 
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             default=False,
             description="Invert Values"
             )
-    blur_strength = FloatProperty(
+    blur_strength: FloatProperty(
             name="Blur Strength",
             default=1,
             min=0.001,
             max=1,
             description="Blur strength per iteration"
             )
-    blur_iterations = IntProperty(
+    blur_iterations: IntProperty(
             name="Blur Iterations",
             default=1,
             min=0,
             max=40,
             description="Number of times to blur the values"
             )
-    min_angle = FloatProperty(
+    min_angle: FloatProperty(
             name="Min Angle",
             default=0,
             min=0,
@@ -309,7 +309,7 @@ class curvature_to_vertex_groups(Operator):
             subtype='ANGLE',
             description="Minimum angle"
             )
-    max_angle = FloatProperty(
+    max_angle: FloatProperty(
             name="Max Angle",
             default=pi,
             min=pi / 2,
@@ -317,7 +317,7 @@ class curvature_to_vertex_groups(Operator):
             subtype='ANGLE',
             description="Maximum angle"
             )
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             default=False,
             description="Invert the curvature map"
@@ -362,7 +362,7 @@ class face_area_to_vertex_groups(Operator):
                       "faces")
     bl_options = {'REGISTER', 'UNDO'}
 
-    invert = BoolProperty(
+    invert: BoolProperty(
             name="Invert",
             default=False,
             description="Invert Values"
@@ -425,35 +425,35 @@ class harmonic_weight(Operator):
     bl_description = "Create an harmonic variation of the active Vertex Group"
     bl_options = {'REGISTER', 'UNDO'}
 
-    freq = FloatProperty(
+    freq: FloatProperty(
             name="Frequency",
             default=20,
             soft_min=0,
             soft_max=100,
             description="Wave frequency"
             )
-    amp = FloatProperty(
+    amp: FloatProperty(
             name="Amplitude",
             default=1,
             soft_min=0,
             soft_max=10,
             description="Wave amplitude"
             )
-    midlevel = FloatProperty(
+    midlevel: FloatProperty(
             name="Midlevel",
             default=0,
             min=-1,
             max=1,
             description="Midlevel"
             )
-    add = FloatProperty(
+    add: FloatProperty(
             name="Add",
             default=0,
             min=-1,
             max=1,
             description="Add to the Weight"
             )
-    mult = FloatProperty(
+    mult: FloatProperty(
             name="Multiply",
             default=0,
             min=0,
diff --git a/mesh_tissue/dual_mesh.py b/mesh_tissue/dual_mesh.py
index 3b20e138..97f0123e 100644
--- a/mesh_tissue/dual_mesh.py
+++ b/mesh_tissue/dual_mesh.py
@@ -55,7 +55,7 @@ class dual_mesh(Operator):
     bl_description = ("Convert a generic mesh into a polygonal mesh")
     bl_options = {'REGISTER', 'UNDO'}
 
-    quad_method = EnumProperty(
+    quad_method: EnumProperty(
             items=[('BEAUTY', 'Beauty',
                     'Split the quads in nice triangles, slower method'),
                     ('FIXED', 'Fixed',
@@ -70,7 +70,7 @@ class dual_mesh(Operator):
             default="FIXED",
             options={'LIBRARY_EDITABLE'}
             )
-    polygon_method = EnumProperty(
+    polygon_method: EnumProperty(
             items=[
                 ('BEAUTY', 'Beauty', 'Arrange the new triangles evenly'),
                 ('CLIP', 'Clip',
@@ -80,12 +80,12 @@ class dual_mesh(Operator):
             default="BEAUTY",
             options={'LIBRARY_EDITABLE'}
             )
-    preserve_borders = BoolProperty(
+    preserve_borders: BoolProperty(
             name="Preserve Borders",
             default=True,
             description="Preserve original borders"
             )
-    apply_modifiers = BoolProperty(
+    apply_modifiers: BoolProperty(
             name="Apply Modifiers",
             default=True,
             description="Apply object's modifiers"
diff --git a/mesh_tissue/lattice.py b/mesh_tissue/lattice.py
index 737b4c87..73f4c33c 100644
--- a/mesh_tissue/lattice.py
+++ b/mesh_tissue/lattice.py
@@ -173,80 +173,80 @@ class lattice_along_surface(Operator):
                       "Lattice's topology")
     bl_options = {'REGISTER', 'UNDO'}
 
-    set_parent = BoolProperty(
+    set_parent: BoolProperty(
             name="Set Parent",
             default=True,
             description="Automatically set the Lattice as parent"
             )
-    flipNormals = BoolProperty(
+    flipNormals: BoolProperty(
             name="Flip Normals",
             default=False,
             description="Flip normals direction"
             )
-    swapUV = BoolProperty(
+    swapUV: BoolProperty(
             name="Swap UV",
             default=False,
             description="Flip grid's U and V"
             )
-    flipU = BoolProperty(
+    flipU: BoolProperty(
             name="Flip U",
             default=False,
             description="Flip grid's U")
 
-    flipV = BoolProperty(
+    flipV: BoolProperty(
             name="Flip V",
             default=False,
             description="Flip grid's V"
             )
-    flipW = BoolProperty(
+    flipW: BoolProperty(
             name="Flip W",
             default=False,
             description="Flip grid's W"
             )
-    use_groups = BoolProperty(
+    use_groups: BoolProperty(
             name="Vertex Group",
             default=False,
             description="Use active Vertex Group for lattice's thickness"
             )
-    high_quality_lattice = BoolProperty(
+    high_quality_lattice: BoolProperty(
             name="High quality",
             default=True,
             description="Increase the the subdivisions in normal direction for a "
                         "more correct result"
             )
-    hide_lattice = BoolProperty(
+    hide_lattice: BoolProperty(
             name="Hide Lattice",
             default=True,
             description="Automatically hide the Lattice object"
             )
-    scale_x = FloatProperty(
+    scale_x: FloatProperty(
             name="Scale X",
             default=1,
             min=0.001,
             max=1,
             description="Object scale"
             )
-    scale_y = FloatProperty(
+    scale_y: FloatProperty(
             name="Scale Y", default=1,
             min=0.001,
             max=1,
             description="Object scale"
             )
-    scale_z = FloatProperty(
+    scale_z: FloatProperty(
             name="Scale Z",
             default=1,
             min=0.001,
             max=1,
             description="Object scale"
             )
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name="Thickness",
             default=1,
             soft_min=0,
             soft_max=5,
             description="Lattice thickness"
             )
-    displace = FloatProperty(
+    displace: FloatProperty(
             name="Displace",
             default=0,
             soft_min=-1,
diff --git a/mesh_tissue/tessellate_numpy.py b/mesh_tissue/tessellate_numpy.py
index d2361cb4..f6fb97c0 100644
--- a/mesh_tissue/tessellate_numpy.py
+++ b/mesh_tissue/tessellate_numpy.py
@@ -432,24 +432,24 @@ def store_parameters(operator, ob):
 
 
 class tissue_tessellate_prop(PropertyGroup):
-    generator = StringProperty()
-    component = StringProperty()
-    offset = FloatProperty()
-    zscale = FloatProperty(default=1)
-    merge = BoolProperty()
-    merge_thres = FloatProperty()
-    gen_modifiers = BoolProperty()
-    com_modifiers = BoolProperty()
-    mode = StringProperty()
-    rotation_mode = StringProperty()
-    scale_mode = StringProperty()
-    fill_mode = StringProperty()
-    bool_random = BoolProperty()
-    random_seed = IntProperty()
-    vertexgroup = StringProperty()
-    bool_vertex_group = BoolProperty()
-    bool_selection = BoolProperty()
-    bool_shapekeys = BoolProperty()
+    generator: StringProperty()
+    component: StringProperty()
+    offset: FloatProperty()
+    zscale: FloatProperty(default=1)
+    merge: BoolProperty()
+    merge_thres: FloatProperty()
+    gen_modifiers: BoolProperty()
+    com_modifiers: BoolProperty()
+    mode: StringProperty()
+    rotation_mode: StringProperty()
+    scale_mode: StringProperty()
+    fill_mode: StringProperty()
+    bool_random: BoolProperty()
+    random_seed: IntProperty()
+    vertexgroup: StringProperty()
+    bool_vertex_group: BoolProperty()
+    bool_selection: BoolProperty()
+    bool_shapekeys: BoolProperty()
 
 
 class tessellate(Operator):
@@ -459,23 +459,23 @@ class tessellate(Operator):
                       "faces, adapting the shape to the different faces")
     bl_options = {'REGISTER', 'UNDO'}
 
-    object_name = StringProperty(
+    object_name: StringProperty(
             name="",
             description="Name of the generated object"
             )
-    zscale = FloatProperty(
+    zscale: FloatProperty(
             name="Scale",
             default=1,
             soft_min=0,
             soft_max=10,
             description="Scale factor for the component thickness"
             )
-    scale_mode = EnumProperty(
+    scale_mode: EnumProperty(
             items=(('CONSTANT', "Constant", ""), ('ADAPTIVE', "Proportional", "")),
             default='CONSTANT',
             name="Z-Scale according to faces size"
             )
-    offset = FloatProperty(
+    offset: FloatProperty(
             name="Surface Offset",
             default=0,
             min=-1, max=1,
@@ -483,77 +483,77 @@ class tessellate(Operator):
             soft_max=1,
             description="Surface offset"
             )
-    mode = EnumProperty(
+    mode: EnumProperty(
             items=(('CONSTANT', "Constant", ""), ('ADAPTIVE', "Adaptive", "")),
             default='ADAPTIVE',
             name="Component Mode"
             )
-    rotation_mode = EnumProperty(
+    rotation_mode: EnumProperty(
             items=(('RANDOM', "Random", ""),
                    ('UV', "Active UV", ""),
                    ('DEFAULT', "Default", "")),
             default='DEFAULT',
             name="Component Rotation"
             )
-    fill_mode = EnumProperty(
+    fill_mode: EnumProperty(
             items=(('QUAD', "Quad", ""), ('FAN', "Fan", "")),
             default='QUAD',
             name="Fill Mode"
             )
-    gen_modifiers = BoolProperty(
+    gen_modifiers: BoolProperty(
             name="Generator Modifiers",
             default=False,
             description="Apply modifiers to base object"
             )
-    com_modifiers = BoolProperty(
+    com_modifiers: BoolProperty(
             name="Component Modifiers",
             default=False,
             description="Apply modifiers to component object"
             )
-    merge = BoolProperty(
+    merge: BoolProperty(
             name="Merge",
             default=False,
             description="Merge vertices in adjacent duplicates"
             )
-    merge_thres = FloatProperty(
+    merge_thres: FloatProperty(
             name="Distance",
             default=0.001,
             soft_min=0,
             soft_max=10,
             description="Limit below which to merge vertices"
             )
-    generator = StringProperty(
+    generator: StringProperty(
             name="",
             description="Base object for the tessellation"
             )
-    component = StringProperty(
+    component: StringProperty(
             name="",
             description="Component object for the tessellation"
             )
-    bool_random = BoolProperty(
+    bool_random: BoolProperty(
             name="Randomize",
             default=False,
             description="Randomize component rotation"
             )
-    random_seed = IntProperty(
+    random_seed: IntProperty(
             name="Seed",
             default=0,
             soft_min=0,
             soft_max=10,
             description="Random seed"
             )
-    bool_vertex_group = BoolProperty(
+    bool_vertex_group: BoolProperty(
             name="Map Vertex Group",
             default=False,
             description="Map the active "
                         "Vertex Group from the Base object to generated geometry"
             )
-    bool_selection = BoolProperty(
+    bool_selection: BoolProperty(
             name="On selected Faces",
             default=False,
             description="Create Tessellation only on selected faces"
             )
-    bool_shapekeys = BoolProperty(
+    bool_shapekeys: BoolProperty(
             name="Use Shape Keys",
             default=False,
             description="Use component's active Shape Key according to "
@@ -1046,23 +1046,23 @@ class settings_tessellate(Operator):
                       "Allow also to change tessellation's parameters")
     bl_options = {'REGISTER', 'UNDO'}
 
-    object_name = StringProperty(
+    object_name: StringProperty(
             name="",
             description="Name of the generated object"
             )
-    zscale = FloatProperty(
+    zscale: FloatProperty(
             name="Scale",
             default=1,
             soft_min=0,
             soft_max=10,
             description="Scale factor for the component thickness"
             )
-    scale_mode = EnumProperty(
+    scale_mode: EnumProperty(
             items=(('CONSTANT', "Constant", ""), ('ADAPTIVE', "Proportional", "")),
             default='ADAPTIVE',
             name="Scale variation"
             )
-    offset = FloatProperty(
+    offset: FloatProperty(
             name="Surface Offset",
             default=0,
             min=-1, max=1,
@@ -1070,76 +1070,76 @@ class settings_tessellate(Operator):
             soft_max=1,
             description="Surface offset"
             )
-    mode = EnumProperty(
+    mode: EnumProperty(
             items=(('CONSTANT', "Constant", ""), ('ADAPTIVE', "Adaptive", "")),
             default='ADAPTIVE',
             name="Component Mode"
             )
-    rotation_mode = EnumProperty(
+    rotation_mode: EnumProperty(
             items=(('RANDOM', "Random", ""), ('UV', "Active UV", ""),
                    ('DEFAULT', "Default", "")),
             default='DEFAULT',
             name="Component Rotation"
             )
-    fill_mode = EnumProperty(
+    fill_mode: EnumProperty(
             items=(('QUAD', "Quad", ""), ('FAN', "Fan", "")),
             default='QUAD',
             name="Fill Mode"
             )
-    gen_modifiers = BoolProperty(
+    gen_modifiers: BoolProperty(
             name="Generator Modifiers",
             default=False,
             description="Apply modifiers to base object"
             )
-    com_modifiers = BoolProperty(
+    com_modifiers: BoolProperty(
             name="Component Modifiers",
             default=False,
             description="Apply modifiers to component object"
             )
-    merge = BoolProperty(
+    merge: BoolProperty(
             name="Merge",
             default=False,
             description="Merge vertices in adjacent duplicates"
             )
-    merge_thres = FloatProperty(
+    merge_thres: FloatProperty(
             name="Distance",
             default=0.001,
             soft_min=0,
             soft_max=10,
             description="Limit below which to merge vertices"
             )
-    generator = StringProperty(
+    generator: StringProperty(
             name="",
             description="Base object for the tessellation"
             )
-    component = StringProperty(
+    component: StringProperty(
             name="",
             description="Component object for the tessellation"
             )
-    bool_random = BoolProperty(
+    bool_random: BoolProperty(
             name="Randomize",
             default=False,
             description="Randomize component rotation"
             )
-    random_seed = IntProperty(
+    random_seed: IntProperty(
             name="Seed",
             default=0,
             soft_min=0,
             soft_max=10,
             description="Random seed"
             )
-    bool_vertex_group = BoolProperty(
+    bool_vertex_group: BoolProperty(
             name="Map Vertex Group",
             default=False,
             description="Map on generated "
                         "geometry the active Vertex Group from the base object"
             )
-    bool_selection = BoolProperty(
+    bool_selection: BoolProperty(
             name="On selected Faces",
             default=False,
             description="Create Tessellation only on select faces"
             )
-    bool_shapekeys = BoolProperty(
+    bool_shapekeys: BoolProperty(
             name="Use Shape Keys",
             default=False,
             description="Use component's active Shape Key according to active "
diff --git a/mesh_tissue/uv_to_mesh.py b/mesh_tissue/uv_to_mesh.py
index f502c147..928fa3f5 100644
--- a/mesh_tissue/uv_to_mesh.py
+++ b/mesh_tissue/uv_to_mesh.py
@@ -53,22 +53,22 @@ class uv_to_mesh(Operator):
     bl_description = ("Create a new Mesh based on active UV")
     bl_options = {'REGISTER', 'UNDO'}
 
-    apply_modifiers = BoolProperty(
+    apply_modifiers: BoolProperty(
             name="Apply Modifiers",
             default=False,
             description="Apply object's modifiers"
             )
-    vertex_groups = BoolProperty(
+    vertex_groups: BoolProperty(
             name="Keep Vertex Groups",
             default=False,
             description="Transfer all the Vertex Groups"
             )
-    materials = BoolProperty(
+    materials: BoolProperty(
             name="Keep Materials",
             default=True,
             description="Transfer all the Materials"
             )
-    auto_scale = BoolProperty(
+    auto_scale: BoolProperty(
             name="Resize",
             default=True,
             description="Scale the new object in order to preserve the average surface area"
diff --git a/mocap/__init__.py b/mocap/__init__.py
index d2a1c57b..ca5fe32f 100644
--- a/mocap/__init__.py
+++ b/mocap/__init__.py
@@ -73,99 +73,99 @@ def hasIKConstraint(pose_bone):
 
 
 class MocapConstraint(bpy.types.PropertyGroup):
-    name = StringProperty(name="Name",
+    name: StringProperty(name="Name",
         default="Mocap Fix",
         description="Name of Mocap Fix",
         update=mocap_constraints.setConstraint)
-    constrained_bone = StringProperty(name="Bone",
+    constrained_bone: StringProperty(name="Bone",
         default="",
         description="Constrained Bone",
         update=mocap_constraints.updateConstraintBoneType)
-    constrained_boneB = StringProperty(name="Bone (2)",
+    constrained_boneB: StringProperty(name="Bone (2)",
         default="",
         description="Other Constrained Bone (optional, depends on type)",
         update=mocap_constraints.setConstraint)
-    s_frame = IntProperty(name="S",
+    s_frame: IntProperty(name="S",
         default=0,
         description="Start frame of Fix",
         update=mocap_constraints.setConstraint)
-    e_frame = IntProperty(name="E",
+    e_frame: IntProperty(name="E",
         default=100,
         description="End frame of Fix",
         update=mocap_constraints.setConstraint)
-    smooth_in = IntProperty(name="In",
+    smooth_in: IntProperty(name="In",
         default=10,
         description="Number of frames to smooth in",
         update=mocap_constraints.setConstraint,
         min=0)
-    smooth_out = IntProperty(name="Out",
+    smooth_out: IntProperty(name="Out",
         default=10,
         description="Number of frames to smooth out",
         update=mocap_constraints.setConstraint,
         min=0)
-    targetMesh = StringProperty(name="Mesh",
+    targetMesh: StringProperty(name="Mesh",
         default="",
         description="Target of Fix - Mesh (optional, depends on type)",
         update=mocap_constraints.setConstraint)
-    active = BoolProperty(name="Active",
+    active: BoolProperty(name="Active",
         default=True,
         description="Fix is active",
         update=mocap_constraints.setConstraint)
-    show_expanded = BoolProperty(name="Show Expanded",
+    show_expanded: BoolProperty(name="Show Expanded",
         default=True,
         description="Fix is fully shown")
-    targetPoint = FloatVectorProperty(name="Point", size=3,
+    targetPoint: FloatVectorProperty(name="Point", size=3,
         subtype="XYZ", default=(0.0, 0.0, 0.0),
         description="Target of Fix - Point",
         update=mocap_constraints.setConstraint)
-    targetDist = FloatProperty(name="Offset",
+    targetDist: FloatProperty(name="Offset",
         default=0.0,
         description="Distance and Floor Fixes - Desired offset",
         update=mocap_constraints.setConstraint)
-    targetSpace = EnumProperty(
+    targetSpace: EnumProperty(
         items=[("WORLD", "World Space", "Evaluate target in global space"),
             ("LOCAL", "Object space", "Evaluate target in object space"),
             ("constrained_boneB", "Other Bone Space", "Evaluate target in specified other bone space")],
         name="Space",
         description="In which space should Point type target be evaluated",
         update=mocap_constraints.setConstraint)
-    type = EnumProperty(name="Type of constraint",
+    type: EnumProperty(name="Type of constraint",
         items=[("point", "Maintain Position", "Bone is at a specific point"),
             ("freeze", "Maintain Position at frame", "Bone does not move from location specified in target frame"),
             ("floor", "Stay above", "Bone does not cross specified mesh object eg floor"),
             ("distance", "Maintain distance", "Target bones maintained specified distance")],
         description="Type of Fix",
         update=mocap_constraints.updateConstraintBoneType)
-    real_constraint = StringProperty()
-    real_constraint_bone = StringProperty()
+    real_constraint: StringProperty()
+    real_constraint_bone: StringProperty()
 
 
 # Animation Stitch Settings, used for animation stitching of 2 retargeted animations.
 class AnimationStitchSettings(bpy.types.PropertyGroup):
-    first_action = StringProperty(name="Action 1",
+    first_action: StringProperty(name="Action 1",
             description="First action in stitch")
-    second_action = StringProperty(name="Action 2",
+    second_action: StringProperty(name="Action 2",
             description="Second action in stitch")
-    blend_frame = IntProperty(name="Stitch frame",
+    blend_frame: IntProperty(name="Stitch frame",
             description="Frame to locate stitch on")
-    blend_amount = IntProperty(name="Blend amount",
+    blend_amount: IntProperty(name="Blend amount",
             description="Size of blending transition, on both sides of the stitch",
             default=10)
-    second_offset = IntProperty(name="Second offset",
+    second_offset: IntProperty(name="Second offset",
             description="Frame offset for 2nd animation, where it should start",
             default=10)
-    stick_bone = StringProperty(name="Stick Bone",
+    stick_bone: StringProperty(name="Stick Bone",
             description="Bone to freeze during transition",
             default="")
 
 
 # MocapNLA Tracks. Stores which tracks/actions are associated with each retargeted animation.
 class MocapNLATracks(bpy.types.PropertyGroup):
-    name = StringProperty()
-    base_track = StringProperty()
-    auto_fix_track = StringProperty()
-    manual_fix_track = StringProperty()
-    stride_action = StringProperty()
+    name: StringProperty()
+    base_track: StringProperty()
+    auto_fix_track: StringProperty()
+    manual_fix_track: StringProperty()
+    stride_action: StringProperty()
 
 
 #Update function for Advanced Retarget boolean variable.
@@ -231,7 +231,7 @@ def toggleIKBone(self, context):
 #MocapMap class for storing mapping on enduser performer,
 # where a bone may be linked to more than one on the performer
 class MocapMapping(bpy.types.PropertyGroup):
-    name = StringProperty()
+    name: StringProperty()
 
 # Disabling for now [#28933] - campbell
 '''
@@ -543,7 +543,7 @@ class OBJECT_OT_SelectMapBoneButton(bpy.types.Operator):
     """Select a bone for faster mapping"""
     bl_idname = "mocap.selectmap"
     bl_label = "Select Mapping Bone"
-    perf_bone = StringProperty()
+    perf_bone: StringProperty()
 
     def execute(self, context):
         enduser_obj = bpy.context.active_object
@@ -706,7 +706,7 @@ class MOCAP_OT_AddMocapFix(bpy.types.Operator):
     """artifacts following the retarget"""
     bl_idname = "mocap.addmocapfix"
     bl_label = "Add Mocap Fix"
-    type = EnumProperty(name="Type of Fix",
+    type: EnumProperty(name="Type of Fix",
     items=[("point", "Maintain Position", "Bone is at a specific point"),
         ("freeze", "Maintain Position at frame", "Bone does not move from location specified in target frame"),
         ("floor", "Stay above", "Bone does not cross specified mesh object eg floor"),
@@ -731,7 +731,7 @@ class OBJECT_OT_RemoveMocapConstraint(bpy.types.Operator):
     """Remove this post-retarget fix"""
     bl_idname = "mocap.removeconstraint"
     bl_label = "Remove Mocap Fix"
-    constraint = IntProperty()
+    constraint: IntProperty()
 
     def execute(self, context):
         enduser_obj = bpy.context.active_object
diff --git a/netrender/ui.py b/netrender/ui.py
index bcd83197..0fe0ac84 100644
--- a/netrender/ui.py
+++ b/netrender/ui.py
@@ -374,7 +374,7 @@ class NetRenderSlave(bpy.types.PropertyGroup):
     @classmethod
     def register(NetRenderSlave):
 
-        NetRenderSlave.name = StringProperty(
+        NetRenderSlave.name: StringProperty(
                         name="Name of the slave",
                         description="",
                         maxlen = 64,
@@ -384,7 +384,7 @@ class NetRenderJob(bpy.types.PropertyGroup):
     @classmethod
     def register(NetRenderJob):
 
-        NetRenderJob.name = StringProperty(
+        NetRenderJob.name: StringProperty(
                         name="Name of the job",
                         description="",
                         maxlen = 128,
@@ -398,78 +398,78 @@ class NetRenderSettings(bpy.types.PropertyGroup):
             netsettings = context.scene.network_render
             verify_address(netsettings, True)
 
-        NetRenderSettings.server_address = StringProperty(
+        NetRenderSettings.server_address: StringProperty(
                         name="Server address",
                         description="IP or name of the master render server",
                         maxlen = 128,
                         default = "[default]",
                         update = address_update_callback)
 
-        NetRenderSettings.server_port = IntProperty(
+        NetRenderSettings.server_port: IntProperty(
                         name="Server port",
                         description="port of the master render server",
                         default = 8000,
                         min=1,
                         max=65535)
 
-        NetRenderSettings.use_master_broadcast = BoolProperty(
+        NetRenderSettings.use_master_broadcast: BoolProperty(
                         name="Broadcast",
                         description="broadcast master server address on local network",
                         default = True)
-        NetRenderSettings.use_ssl = BoolProperty(
+        NetRenderSettings.use_ssl: BoolProperty(
                         name="use ssl",
                         description="use ssl encryption for communication",
                         default = False)
-        NetRenderSettings.cert_path = StringProperty(
+        NetRenderSettings.cert_path: StringProperty(
                         name="CertPath",
                         description="Path to ssl certificate",
                         maxlen = 128,
                         default = "",
                         subtype='FILE_PATH')
-        NetRenderSettings.key_path = StringProperty(
+        NetRenderSettings.key_path: StringProperty(
                         name="key",
                         description="Path to ssl key file",
                         maxlen = 128,
                         default = "",
                         subtype='FILE_PATH')
 
-        NetRenderSettings.use_slave_clear = BoolProperty(
+        NetRenderSettings.use_slave_clear: BoolProperty(
                         name="Clear on exit",
                         description="delete downloaded files on exit",
                         default = True)
 
-        NetRenderSettings.use_slave_thumb = BoolProperty(
+        NetRenderSettings.use_slave_thumb: BoolProperty(
                         name="Generate thumbnails",
                         description="Generate thumbnails on slaves instead of master",
                         default = False)
 
-        NetRenderSettings.slave_tags = StringProperty(
+        NetRenderSettings.slave_tags: StringProperty(
                         name="Tags",
                         description="Tags to associate with the slave (semi-colon separated)",
                         maxlen = 256,
                         default = "")
 
-        NetRenderSettings.use_slave_output_log = BoolProperty(
+        NetRenderSettings.use_slave_output_log: BoolProperty(
                         name="Output render log on console",
                         description="Output render text log to console as well as sending it to the master",
                         default = True)
 
-        NetRenderSettings.slave_render = BoolProperty(
+        NetRenderSettings.slave_render: BoolProperty(
                         name="Render on slave",
                         description="Use slave for render jobs",
                         default = True)
 
-        NetRenderSettings.slave_bake = BoolProperty(
+        NetRenderSettings.slave_bake: BoolProperty(
                         name="Bake on slave",
                         description="Use slave for baking jobs",
                         default = True)
 
-        NetRenderSettings.use_master_clear = BoolProperty(
+        NetRenderSettings.use_master_clear: BoolProperty(
                         name="Clear on exit",
                         description="Delete saved files on exit",
                         default = False)
 
-        NetRenderSettings.use_master_force_upload = BoolProperty(
+        NetRenderSettings.use_master_force_upload: BoolProperty(
                         name="Force Dependency Upload",
                         description="Force client to upload dependency files to master",
                         default = False)
@@ -484,14 +484,14 @@ class NetRenderSettings(bpy.types.PropertyGroup):
         elif not default_path.endswith(os.sep):
             default_path += os.sep
 
-        NetRenderSettings.path = StringProperty(
+        NetRenderSettings.path: StringProperty(
                         name="Path",
                         description="Path for temporary files",
                         maxlen = 128,
                         default = default_path,
                         subtype='FILE_PATH')
 
-        NetRenderSettings.job_type = EnumProperty(
+        NetRenderSettings.job_type: EnumProperty(
                                 items=(
                                                 ("JOB_BLENDER", "Blender", "Standard Blender Job"),
                                                 ("JOB_PROCESS", "Process", "Custom Process Job"),
@@ -501,25 +501,25 @@ class NetRenderSettings(bpy.types.PropertyGroup):
                                 description="Type of render job",
                                 default="JOB_BLENDER")
 
-        NetRenderSettings.job_name = StringProperty(
+        NetRenderSettings.job_name: StringProperty(
                         name="Job name",
                         description="Name of the job",
                         maxlen = 128,
                         default = "[default]")
 
-        NetRenderSettings.job_category = StringProperty(
+        NetRenderSettings.job_category: StringProperty(
                         name="Job category",
                         description="Category of the job",
                         maxlen = 128,
                         default = "")
 
-        NetRenderSettings.job_tags = StringProperty(
+        NetRenderSettings.job_tags: StringProperty(
                         name="Tags",
                         description="Tags to associate with the job (semi-colon separated)",
                         maxlen = 256,
                         default = "")
 
-        NetRenderSettings.job_render_engine = EnumProperty(
+        NetRenderSettings.job_render_engine: EnumProperty(
                                 items = (
                                                 ("BLENDER_RENDER", "BLENDER", "Standard Blender Render"),
                                                 ("CYCLES", "CYCLES", "Cycle Render"),
@@ -529,83 +529,83 @@ class NetRenderSettings(bpy.types.PropertyGroup):
                                 description="Render engine used to render this job",
                                 default="BLENDER_RENDER")
 
-        NetRenderSettings.job_render_engine_other = StringProperty(
+        NetRenderSettings.job_render_engine_other: StringProperty(
                         name="Render engine",
                         description="Render engine other than the builtin defaults (POVRAY_RENDER, ...)",
                         maxlen = 128,
                         default = "")
 
-        NetRenderSettings.save_before_job = BoolProperty(
+        NetRenderSettings.save_before_job: BoolProperty(
                         name="Save Before Job",
                         description="Save current file before sending a job",
                         default = False)
 
-        NetRenderSettings.chunks = IntProperty(
+        NetRenderSettings.chunks: IntProperty(
                         name="Chunks",
                         description="Number of frame to dispatch to each slave in one chunk",
                         default = 5,
                         min=1,
                         max=65535)
 
-        NetRenderSettings.priority = IntProperty(
+        NetRenderSettings.priority: IntProperty(
                         name="Priority",
                         description="Priority of the job",
                         default = 1,
                         min=1,
                         max=10)
 
-        NetRenderSettings.vcs_wpath = StringProperty(
+        NetRenderSettings.vcs_wpath: StringProperty(
                         name="Working Copy",
                         description="Path of the local working copy",
                         maxlen = 1024,
                         default = "")
 
-        NetRenderSettings.vcs_rpath = StringProperty(
+        NetRenderSettings.vcs_rpath: StringProperty(
                         name="Remote Path",
                         description="Path of the server copy (protocol specific)",
                         maxlen = 1024,
                         default = "")
 
-        NetRenderSettings.vcs_revision = StringProperty(
+        NetRenderSettings.vcs_revision: StringProperty(
                         name="Revision",
                         description="Revision for this job",
                         maxlen = 256,
                         default = "")
 
-        NetRenderSettings.vcs_system = EnumProperty(
+        NetRenderSettings.vcs_system: EnumProperty(
                                 items= netrender.versioning.ITEMS,
                                 name="VCS mode",
                                 description="Version Control System",
                                 default=netrender.versioning.ITEMS[0][0])
 
-        NetRenderSettings.job_id = StringProperty(
+        NetRenderSettings.job_id: StringProperty(
                         name="Network job id",
                         description="id of the last sent render job",
                         maxlen = 64,
                         default = "")
 
-        NetRenderSettings.active_slave_index = IntProperty(
+        NetRenderSettings.active_slave_index: IntProperty(
                         name="Index of the active slave",
                         description="",
                         default = -1,
                         min= -1,
                         max=65535)
 
-        NetRenderSettings.active_blacklisted_slave_index = IntProperty(
+        NetRenderSettings.active_blacklisted_slave_index: IntProperty(
                         name="Index of the active slave",
                         description="",
                         default = -1,
                         min= -1,
                         max=65535)
 
-        NetRenderSettings.active_job_index = IntProperty(
+        NetRenderSettings.active_job_index: IntProperty(
                         name="Index of the active job",
                         description="",
                         default = -1,
                         min= -1,
                         max=65535)
 
-        NetRenderSettings.mode = EnumProperty(
+        NetRenderSettings.mode: EnumProperty(
                                 items=(
                                                 ("RENDER_CLIENT", "Client", "Act as render client"),
                                                 ("RENDER_MASTER", "Master", "Act as render master"),
@@ -615,9 +615,9 @@ class NetRenderSettings(bpy.types.PropertyGroup):
                                 description="Mode of operation of this instance",
                                 default="RENDER_CLIENT")
 
-        NetRenderSettings.slaves = CollectionProperty(type=NetRenderSlave, name="Slaves", description="")
-        NetRenderSettings.slaves_blacklist = CollectionProperty(type=NetRenderSlave, name="Slaves Blacklist", description="")
-        NetRenderSettings.jobs = CollectionProperty(type=NetRenderJob, name="Job List", description="")
+        NetRenderSettings.slaves: CollectionProperty(type=NetRenderSlave, name="Slaves", description="")
+        NetRenderSettings.slaves_blacklist: CollectionProperty(type=NetRenderSlave, name="Slaves Blacklist", description="")
+        NetRenderSettings.jobs: CollectionProperty(type=NetRenderJob, name="Job List", description="")
 
         bpy.types.Scene.network_render = PointerProperty(type=NetRenderSettings, name="Network Render", description="Network Render Settings")
 
diff --git a/object_fracture/fracture_ops.py b/object_fracture/fracture_ops.py
index d2f88159..9cfcfb82 100644
--- a/object_fracture/fracture_ops.py
+++ b/object_fracture/fracture_ops.py
@@ -346,21 +346,21 @@ class FractureSimple(bpy.types.Operator):
     bl_label = "Fracture Object"
     bl_options = {'REGISTER', 'UNDO'}
 
-    exe = BoolProperty(name="Execute",
+    exe: BoolProperty(name="Execute",
         description="If it shall actually run, for optimal performance",
         default=False)
 
-    hierarchy = BoolProperty(name="Generate hierarchy",
+    hierarchy: BoolProperty(name="Generate hierarchy",
         description="Hierarchy is useful for simulation of objects" \
                     " breaking in motion",
         default=False)
 
-    nshards = IntProperty(name="Number of shards",
+    nshards: IntProperty(name="Number of shards",
         description="Number of shards the object should be split into",
         min=2,
         default=5)
 
-    crack_type = EnumProperty(name='Crack type',
+    crack_type: EnumProperty(name='Crack type',
         items=(
             ('FLAT', 'Flat', 'a'),
             ('FLAT_ROUGH', 'Flat rough', 'a'),
@@ -369,7 +369,7 @@ class FractureSimple(bpy.types.Operator):
         description='Look of the fracture surface',
         default='FLAT')
 
-    roughness = FloatProperty(name="Roughness",
+    roughness: FloatProperty(name="Roughness",
         description="Roughness of the fracture surface",
         min=0.0,
         max=3.0,
@@ -399,11 +399,11 @@ class FractureGroup(bpy.types.Operator):
     bl_label = "Fracture Object (Group)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    exe = BoolProperty(name="Execute",
+    exe: BoolProperty(name="Execute",
                        description="If it shall actually run, for optimal performance",
                        default=False)
 
-    group = StringProperty(name="Group",
+    group: StringProperty(name="Group",
                            description="Specify the group used for fracturing")
 
 #    e = []
diff --git a/object_fracture_cell/__init__.py b/object_fracture_cell/__init__.py
index f845ccf1..6f46d317 100644
--- a/object_fracture_cell/__init__.py
+++ b/object_fracture_cell/__init__.py
@@ -250,7 +250,7 @@ class FractureCell(Operator):
 
     # -------------------------------------------------------------------------
     # Source Options
-    source = EnumProperty(
+    source: EnumProperty(
             name="Source",
             items=(('VERT_OWN', "Own Verts", "Use own vertices"),
                    ('VERT_CHILD', "Child Verts", "Use child object vertices"),
@@ -264,21 +264,21 @@ class FractureCell(Operator):
             default={'PARTICLE_OWN'},
             )
 
-    source_limit = IntProperty(
+    source_limit: IntProperty(
             name="Source Limit",
             description="Limit the number of input points, 0 for unlimited",
             min=0, max=5000,
             default=100,
             )
 
-    source_noise = FloatProperty(
+    source_noise: FloatProperty(
             name="Noise",
             description="Randomize point distribution",
             min=0.0, max=1.0,
             default=0.0,
             )
 
-    cell_scale = FloatVectorProperty(
+    cell_scale: FloatVectorProperty(
             name="Scale",
             description="Scale Cell Shape",
             size=3,
@@ -289,35 +289,35 @@ class FractureCell(Operator):
     # -------------------------------------------------------------------------
     # Recursion
 
-    recursion = IntProperty(
+    recursion: IntProperty(
             name="Recursion",
             description="Break shards recursively",
             min=0, max=5000,
             default=0,
             )
 
-    recursion_source_limit = IntProperty(
+    recursion_source_limit: IntProperty(
             name="Source Limit",
             description="Limit the number of input points, 0 for unlimited (applies to recursion only)",
             min=0, max=5000,
             default=8,
             )
 
-    recursion_clamp = IntProperty(
+    recursion_clamp: IntProperty(
             name="Clamp Recursion",
             description="Finish recursion when this number of objects is reached (prevents recursing for extended periods of time), zero disables",
             min=0, max=10000,
             default=250,
             )
 
-    recursion_chance = FloatProperty(
+    recursion_chance: FloatProperty(
             name="Random Factor",
             description="Likelihood of recursion",
             min=0.0, max=1.0,
             default=0.25,
             )
 
-    recursion_chance_select = EnumProperty(
+    recursion_chance_select: EnumProperty(
             name="Recurse Over",
             items=(('RANDOM', "Random", ""),
                    ('SIZE_MIN', "Small", "Recursively subdivide smaller objects"),
@@ -331,49 +331,49 @@ class FractureCell(Operator):
     # -------------------------------------------------------------------------
     # Mesh Data Options
 
-    use_smooth_faces = BoolProperty(
+    use_smooth_faces: BoolProperty(
             name="Smooth Faces",
             default=False,
             )
 
-    use_sharp_edges = BoolProperty(
+    use_sharp_edges: BoolProperty(
             name="Sharp Edges",
             description="Set sharp edges when disabled",
             default=True,
             )
 
-    use_sharp_edges_apply = BoolProperty(
+    use_sharp_edges_apply: BoolProperty(
             name="Apply Split Edge",
             description="Split sharp hard edges",
             default=True,
             )
 
-    use_data_match = BoolProperty(
+    use_data_match: BoolProperty(
             name="Match Data",
             description="Match original mesh materials and data layers",
             default=True,
             )
 
-    use_island_split = BoolProperty(
+    use_island_split: BoolProperty(
             name="Split Islands",
             description="Split disconnected meshes",
             default=True,
             )
 
-    margin = FloatProperty(
+    margin: FloatProperty(
             name="Margin",
             description="Gaps for the fracture (gives more stable physics)",
             min=0.0, max=1.0,
             default=0.001,
             )
 
-    material_index = IntProperty(
+    material_index: IntProperty(
             name="Material",
             description="Material index for interior faces",
             default=0,
             )
 
-    use_interior_vgroup = BoolProperty(
+    use_interior_vgroup: BoolProperty(
             name="Interior VGroup",
             description="Create a vertex group for interior verts",
             default=False,
@@ -382,7 +382,7 @@ class FractureCell(Operator):
     # -------------------------------------------------------------------------
     # Physics Options
 
-    mass_mode = EnumProperty(
+    mass_mode: EnumProperty(
             name="Mass Mode",
             items=(('VOLUME', "Volume", "Objects get part of specified mass based on their volume"),
                    ('UNIFORM', "Uniform", "All objects get the specified mass"),
@@ -390,7 +390,7 @@ class FractureCell(Operator):
             default='VOLUME',
             )
 
-    mass = FloatProperty(
+    mass: FloatProperty(
             name="Mass",
             description="Mass to give created objects",
             min=0.001, max=1000.0,
@@ -401,13 +401,13 @@ class FractureCell(Operator):
     # -------------------------------------------------------------------------
     # Object Options
 
-    use_recenter = BoolProperty(
+    use_recenter: BoolProperty(
             name="Recenter",
             description="Recalculate the center points after splitting",
             default=True,
             )
 
-    use_remove_original = BoolProperty(
+    use_remove_original: BoolProperty(
             name="Remove Original",
             description="Removes the parents used to create the shatter",
             default=True,
@@ -419,20 +419,20 @@ class FractureCell(Operator):
     # .. different from object options in that this controls how the objects
     #    are setup in the scene.
 
-    use_layer_index = IntProperty(
+    use_layer_index: IntProperty(
             name="Layer Index",
             description="Layer to add the objects into or 0 for existing",
             default=0,
             min=0, max=20,
             )
 
-    use_layer_next = BoolProperty(
+    use_layer_next: BoolProperty(
             name="Next Layer",
             description="At the object into the next layer (layer index overrides)",
             default=True,
             )
 
-    group_name = StringProperty(
+    group_name: StringProperty(
             name="Group",
             description="Create objects int a group "
                         "(use existing or create new)",
@@ -440,19 +440,19 @@ class FractureCell(Operator):
 
     # -------------------------------------------------------------------------
     # Debug
-    use_debug_points = BoolProperty(
+    use_debug_points: BoolProperty(
             name="Debug Points",
             description="Create mesh data showing the points used for fracture",
             default=False,
             )
 
-    use_debug_redraw = BoolProperty(
+    use_debug_redraw: BoolProperty(
             name="Show Progress Realtime",
             description="Redraw as fracture is done",
             default=True,
             )
 
-    use_debug_bool = BoolProperty(
+    use_debug_bool: BoolProperty(
             name="Debug Boolean",
             description="Skip applying the boolean modifier",
             default=False,
diff --git a/object_fracture_crack/__init__.py b/object_fracture_crack/__init__.py
index d3cd095d..3e3ec838 100644
--- a/object_fracture_crack/__init__.py
+++ b/object_fracture_crack/__init__.py
@@ -53,54 +53,54 @@ class CrackItProperties(PropertyGroup):
     # In Panel subclass, In bpy.types.Operator subclass,
     # reference them by context.scene.crackit
 
-    fracture_childverts = BoolProperty(
+    fracture_childverts: BoolProperty(
             name="From Child Verts",
             description="Use child object's vertices and position for origin of crack",
             default=False
             )
-    fracture_scalex = FloatProperty(
+    fracture_scalex: FloatProperty(
             name="Scale X",
             description="Scale X",
             default=1.00,
             min=0.00,
             max=1.00
             )
-    fracture_scaley = FloatProperty(
+    fracture_scaley: FloatProperty(
             name="Scale Y",
             description="Scale Y",
             default=1.00,
             min=0.00,
             max=1.00
             )
-    fracture_scalez = FloatProperty(
+    fracture_scalez: FloatProperty(
             name="Scale Z",
             description="Scale Z",
             default=1.00,
             min=0.00,
             max=1.00
             )
-    fracture_div = IntProperty(
+    fracture_div: IntProperty(
             name="Max Crack",
             description="Max Crack",
             default=100,
             min=0,
             max=10000
             )
-    fracture_margin = FloatProperty(
+    fracture_margin: FloatProperty(
             name="Margin Size",
             description="Margin Size",
             default=0.001,
             min=0.000,
             max=1.000
             )
-    extrude_offset = FloatProperty(
+    extrude_offset: FloatProperty(
             name="Offset",
             description="Extrude Offset",
             default=0.10,
             min=0.00,
             max=2.00
             )
-    extrude_random = FloatProperty(
+    extrude_random: FloatProperty(
             name="Random",
             description="Extrude Random",
             default=0.30,
@@ -112,7 +112,7 @@ class CrackItProperties(PropertyGroup):
     # Selection of material preset
     # Note: you can choose the original name in the library blend
     # or the prop name
-    material_preset = EnumProperty(
+    material_preset: EnumProperty(
             name="Preset",
             description="Material Preset",
             items=[
@@ -124,7 +124,7 @@ class CrackItProperties(PropertyGroup):
                 ('crackit_rock1', "Rock", "Rock Material")
                 ]
             )
-    material_lib_name = BoolProperty(
+    material_lib_name: BoolProperty(
             name="Library Name",
             description="Use the original Material name from the .blend library\n"
                         "instead of the one defined in the Preset",
diff --git a/object_skinify.py b/object_skinify.py
index 730a82a7..83b3fd11 100644
--- a/object_skinify.py
+++ b/object_skinify.py
@@ -707,50 +707,50 @@ class BONE_PT_custom_shape(Panel):
 
 # define the scene properties in a group - call them with context.scene.skinify
 class Skinify_Properties(PropertyGroup):
-    sub_level = IntProperty(
+    sub_level: IntProperty(
             name="Sub level",
             min=0, max=4,
             default=1,
             description="Mesh density"
             )
-    thickness = FloatProperty(
+    thickness: FloatProperty(
             name="Thickness",
             min=0.01,
             default=0.8,
             description="Adjust shape thickness"
             )
-    finger_thickness = FloatProperty(
+    finger_thickness: FloatProperty(
             name="Finger Thickness",
             min=0.01, max=1.0,
             default=0.25,
             description="Adjust finger thickness relative to body"
             )
-    connect_mesh = BoolProperty(
+    connect_mesh: BoolProperty(
             name="Solid Shape",
             default=False,
             description="Makes solid shape from bone chains"
             )
-    connect_parents = BoolProperty(
+    connect_parents: BoolProperty(
             name="Fill Gaps",
             default=False,
             description="Fills the gaps between parented bones"
             )
-    generate_all = BoolProperty(
+    generate_all: BoolProperty(
             name="All Shapes",
             default=False,
             description="Generates shapes from all bones"
             )
-    head_ornaments = BoolProperty(
+    head_ornaments: BoolProperty(
             name="Head Ornaments",
             default=False,
             description="Includes head ornaments"
             )
-    apply_mod = BoolProperty(
+    apply_mod: BoolProperty(
             name="Apply Modifiers",
             default=True,
             description="Applies Modifiers to mesh"
             )
-    parent_armature = BoolProperty(
+    parent_armature: BoolProperty(
             name="Parent Armature",
             default=True,
             description="Applies mesh to Armature"
diff --git a/paint_palette.py b/paint_palette.py
index 320163ad..0d2f32e5 100644
--- a/paint_palette.py
+++ b/paint_palette.py
@@ -163,12 +163,12 @@ class PALETTE_OT_load_gimp_palette(Operator):
     bl_idname = "palette.load_gimp_palette"
     bl_label = "Load a Gimp palette"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
         name="Path",
         description="Path of the .gpl file to load",
         default=""
     )
-    menu_idname = StringProperty(
+    menu_idname: StringProperty(
         name="Menu ID Name",
         description="ID name of the menu this was called from",
         default=""
@@ -263,14 +263,14 @@ class WriteGimpPalette():
      - preset_subdir """
     bl_options = {'REGISTER'}  # only because invoke_props_popup requires
 
-    name = StringProperty(
+    name: StringProperty(
         name="Name",
         description="Name of the preset, used to make the path name",
         maxlen=64,
         options={'SKIP_SAVE'},
         default=""
     )
-    remove_active = BoolProperty(
+    remove_active: BoolProperty(
         default=False,
         options={'HIDDEN'}
     )
@@ -444,7 +444,7 @@ class IMAGE_OT_select_color(Operator):
     bl_description = "Select this color"
     bl_options = {'UNDO'}
 
-    color_index = IntProperty()
+    color_index: IntProperty()
 
     def invoke(self, context, event):
         palette_props = context.scene.palette_props
@@ -559,7 +559,7 @@ class VIEW3D_OT_select_weight(Operator):
     bl_description = "Select this weight value slot"
     bl_options = {'UNDO'}
 
-    weight_index = IntProperty()
+    weight_index: IntProperty()
 
     def current_weight(self):
         pp = bpy.context.scene.palette_props
@@ -690,7 +690,7 @@ class VIEW3D_PT_weight_palette(PaintPanel, Panel):
 
 class PALETTE_Colors(PropertyGroup):
     """Class for colors CollectionProperty"""
-    color = FloatVectorProperty(
+    color: FloatVectorProperty(
         name="",
         description="",
         default=(0.8, 0.8, 0.8),
@@ -746,54 +746,54 @@ class PALETTE_Props(PropertyGroup):
         bpy.context.tool_settings.unified_paint_settings.weight = weight
         return None
 
-    palette_name = StringProperty(
+    palette_name: StringProperty(
         name="Palette Name",
         default="Preset",
         subtype='FILE_NAME'
     )
-    color_name = StringProperty(
+    color_name: StringProperty(
         name="",
         description="Color Name",
         default="Untitled",
         update=update_color_name
     )
-    columns = IntProperty(
+    columns: IntProperty(
         name="Columns",
         description="Number of Columns",
         min=0, max=16,
         default=0
     )
-    index = IntProperty(
+    index: IntProperty(
         name="Index",
         description="Move Selected Color",
         min=0,
         update=move_color
     )
-    notes = StringProperty(
+    notes: StringProperty(
         name="Palette Notes",
         default="#\n"
     )
-    current_color_index = IntProperty(
+    current_color_index: IntProperty(
         name="Current Color Index",
         description="",
         default=0,
         min=0
     )
-    current_weight_index = IntProperty(
+    current_weight_index: IntProperty(
         name="Current Color Index",
         description="",
         default=10,
         min=-1
     )
-    presets_folder = StringProperty(name="",
+    presets_folder: StringProperty(name="",
         description="Palettes Folder",
         subtype="DIR_PATH",
         default="//"
     )
-    colors = CollectionProperty(
+    colors: CollectionProperty(
         type=PALETTE_Colors
     )
-    weight = FloatProperty(
+    weight: FloatProperty(
         name="Weight",
         description="Modify the active Weight preset slot value",
         default=0.0,
@@ -801,57 +801,57 @@ class PALETTE_Props(PropertyGroup):
         precision=3,
         update=update_weight
     )
-    weight_0 = FloatProperty(
+    weight_0: FloatProperty(
         default=0.0,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_1 = FloatProperty(
+    weight_1: FloatProperty(
         default=0.1,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_2 = FloatProperty(
+    weight_2: FloatProperty(
         default=0.25,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_3 = FloatProperty(
+    weight_3: FloatProperty(
         default=0.333,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_4 = FloatProperty(
+    weight_4: FloatProperty(
         default=0.4,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_5 = FloatProperty(
+    weight_5: FloatProperty(
         default=0.5,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_6 = FloatProperty(
+    weight_6: FloatProperty(
         default=0.6,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_7 = FloatProperty(
+    weight_7: FloatProperty(
         default=0.6666,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_8 = FloatProperty(
+    weight_8: FloatProperty(
         default=0.75,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_9 = FloatProperty(
+    weight_9: FloatProperty(
         default=0.9,
         min=0.0, max=1.0,
         precision=3
     )
-    weight_10 = FloatProperty(
+    weight_10: FloatProperty(
         default=1.0,
         min=0.0, max=1.0,
         precision=3
diff --git a/render_auto_tile_size.py b/render_auto_tile_size.py
index 8de8e99f..f6feb0cf 100644
--- a/render_auto_tile_size.py
+++ b/render_auto_tile_size.py
@@ -68,28 +68,28 @@ def _update_tile_size(self, context):
 
 
 class AutoTileSizeSettings(PropertyGroup):
-    gpu_choice = EnumProperty(
+    gpu_choice: EnumProperty(
             name="Target GPU Tile Size",
             items=TILE_SIZES,
             default='256',
             description="Square dimensions of tiles for GPU rendering",
             update=_update_tile_size
             )
-    cpu_choice = EnumProperty(
+    cpu_choice: EnumProperty(
             name="Target CPU Tile Size",
             items=TILE_SIZES,
             default='32',
             description="Square dimensions of tiles for CPU rendering",
             update=_update_tile_size
             )
-    bi_choice = EnumProperty(
+    bi_choice: EnumProperty(
             name="Target CPU Tile Size",
             items=TILE_SIZES,
             default='64',
             description="Square dimensions of tiles",
             update=_update_tile_size
             )
-    gpu_custom = IntProperty(
+    gpu_custom: IntProperty(
             name="Target Size",
             default=256,
             min=8,  # same as blender's own limits
@@ -97,7 +97,7 @@ class AutoTileSizeSettings(PropertyGroup):
             description="Custom target tile size for GPU rendering",
             update=_update_tile_size
             )
-    cpu_custom = IntProperty(
+    cpu_custom: IntProperty(
             name="Target Size",
             default=32,
             min=8,  # same as blender's own limits
@@ -105,7 +105,7 @@ class AutoTileSizeSettings(PropertyGroup):
             description="Custom target tile size for CPU rendering",
             update=_update_tile_size
             )
-    bi_custom = IntProperty(
+    bi_custom: IntProperty(
             name="Target Size",
             default=64,
             min=8,  # same as blender's own limits
@@ -113,7 +113,7 @@ class AutoTileSizeSettings(PropertyGroup):
             description="Custom target tile size",
             update=_update_tile_size
             )
-    target_type = EnumProperty(
+    target_type: EnumProperty(
             name="Target tile size",
             items=(
                 ('po2', "Po2", "A choice between powers of 2 (16, 32, 64...)"),
@@ -122,26 +122,26 @@ class AutoTileSizeSettings(PropertyGroup):
             description="Method of choosing the target tile size",
             update=_update_tile_size
             )
-    use_optimal = BoolProperty(
+    use_optimal: BoolProperty(
             name="Optimal Tiles",
             default=True,
             description="Try to find a similar tile size for best performance, "
                         "instead of using exact selected one",
             update=_update_tile_size
             )
-    is_enabled = BoolProperty(
+    is_enabled: BoolProperty(
             name="Auto Tile Size",
             default=True,
             description="Calculate the best tile size based on factors of the "
                         "render size and the chosen target",
             update=_update_tile_size
             )
-    use_advanced_ui = BoolProperty(
+    use_advanced_ui: BoolProperty(
             name="Advanced Settings",
             default=False,
             description="Show extra options for more control over the calculated tile size"
             )
-    thread_error_correct = BoolProperty(
+    thread_error_correct: BoolProperty(
             name="Fix",
             default=True,
             description="Reduce the tile size so that all your available threads are used",
@@ -149,11 +149,11 @@ class AutoTileSizeSettings(PropertyGroup):
             )
 
     # Internally used props (not for GUI)
-    first_run = BoolProperty(
+    first_run: BoolProperty(
             default=True,
             options={'HIDDEN'}
             )
-    threads_error = BoolProperty(
+    threads_error: BoolProperty(
             options={'HIDDEN'}
             )
     num_tiles = IntVectorProperty(
@@ -161,15 +161,15 @@ class AutoTileSizeSettings(PropertyGroup):
             size=2,
             options={'HIDDEN'}
             )
-    prev_choice = StringProperty(
+    prev_choice: StringProperty(
             default='',
             options={'HIDDEN'}
             )
-    prev_engine = StringProperty(
+    prev_engine: StringProperty(
             default='',
             options={'HIDDEN'}
             )
-    prev_device = StringProperty(
+    prev_device: StringProperty(
             default='',
             options={'HIDDEN'}
             )
@@ -178,11 +178,11 @@ class AutoTileSizeSettings(PropertyGroup):
             size=2,
             options={'HIDDEN'}
             )
-    prev_border = BoolProperty(
+    prev_border: BoolProperty(
             default=False,
             options={'HIDDEN'}
             )
-    prev_border_res = FloatVectorProperty(
+    prev_border_res: FloatVectorProperty(
             default=(0, 0, 0, 0),
             size=4,
             options={'HIDDEN'}
@@ -192,7 +192,7 @@ class AutoTileSizeSettings(PropertyGroup):
             size=2,
             options={'HIDDEN'}
             )
-    prev_threads = IntProperty(
+    prev_threads: IntProperty(
             default=0,
             options={'HIDDEN'}
             )
diff --git a/render_freestyle_svg.py b/render_freestyle_svg.py
index 7e1ffc19..3e3634b1 100644
--- a/render_freestyle_svg.py
+++ b/render_freestyle_svg.py
@@ -218,19 +218,19 @@ class SVGExport(bpy.types.PropertyGroup):
     """Implements the properties for the SVG exporter"""
     bl_idname = "RENDER_PT_svg_export"
 
-    use_svg_export = BoolProperty(
+    use_svg_export: BoolProperty(
             name="SVG Export",
             description="Export Freestyle edges to an .svg format",
             )
-    split_at_invisible = BoolProperty(
+    split_at_invisible: BoolProperty(
             name="Split at Invisible",
             description="Split the stroke at an invisible vertex",
             )
-    object_fill = BoolProperty(
+    object_fill: BoolProperty(
             name="Fill Contours",
             description="Fill the contour with the object's material color",
             )
-    mode = EnumProperty(
+    mode: EnumProperty(
             name="Mode",
             items=(
                 ('FRAME', "Frame", "Export a single frame", 0),
@@ -238,7 +238,7 @@ class SVGExport(bpy.types.PropertyGroup):
                 ),
             default='FRAME',
             )
-    line_join_type = EnumProperty(
+    line_join_type: EnumProperty(
             name="Linejoin",
             items=(
                 ('MITER', "Miter", "Corners are sharp", 0),
diff --git a/render_povray/__init__.py b/render_povray/__init__.py
index 9d7254ea..b8b2f4e5 100644
--- a/render_povray/__init__.py
+++ b/render_povray/__init__.py
@@ -74,77 +74,77 @@ def string_strip_hyphen(name):
 ###############################################################################
 class RenderPovSettingsScene(PropertyGroup):
     #Linux SDL-window enable
-    sdl_window_enable = BoolProperty(
+    sdl_window_enable: BoolProperty(
             name="Enable SDL window",
             description="Enable the SDL window in Linux OS",
             default=True)
     # File Options
-    text_block = StringProperty(
+    text_block: StringProperty(
             name="Text Scene Name",
             description="Name of POV-Ray scene to use. "
                         "Set when clicking Run to render current text only",
             maxlen=1024)
-    tempfiles_enable = BoolProperty(
+    tempfiles_enable: BoolProperty(
             name="Enable Tempfiles",
             description="Enable the OS-Tempfiles. Otherwise set the path where"
                         " to save the files",
             default=True)
-    pov_editor = BoolProperty(
+    pov_editor: BoolProperty(
             name="POV-Ray editor",
             description="Don't Close POV-Ray editor after rendering (Overridden"
                         " by /EXIT command)",
             default=False)
-    deletefiles_enable = BoolProperty(
+    deletefiles_enable: BoolProperty(
             name="Delete files",
             description="Delete files after rendering. "
                         "Doesn't work with the image",
             default=True)
-    scene_name = StringProperty(
+    scene_name: StringProperty(
             name="Scene Name",
             description="Name of POV-Ray scene to create. Empty name will use "
                         "the name of the blend file",
             maxlen=1024)
-    scene_path = StringProperty(
+    scene_path: StringProperty(
             name="Export scene path",
             # Bug in POV-Ray RC3
             # description="Path to directory where the exported scene "
                         # "(POV and INI) is created",
             description="Path to directory where the files are created",
             maxlen=1024, subtype="DIR_PATH")
-    renderimage_path = StringProperty(
+    renderimage_path: StringProperty(
             name="Rendered image path",
             description="Full path to directory where the rendered image is "
                         "saved",
             maxlen=1024, subtype="DIR_PATH")
-    list_lf_enable = BoolProperty(
+    list_lf_enable: BoolProperty(
             name="LF in lists",
             description="Enable line breaks in lists (vectors and indices). "
                         "Disabled: lists are exported in one line",
             default=True)
 
     # Not a real pov option, just to know if we should write
-    radio_enable = BoolProperty(
+    radio_enable: BoolProperty(
             name="Enable Radiosity",
             description="Enable POV-Rays radiosity calculation",
             default=True)
 
-    radio_display_advanced = BoolProperty(
+    radio_display_advanced: BoolProperty(
             name="Advanced Options",
             description="Show advanced options",
             default=False)
 
-    media_enable = BoolProperty(
+    media_enable: BoolProperty(
             name="Enable Media",
             description="Enable POV-Rays atmospheric media",
             default=False)
 
-    media_samples = IntProperty(
+    media_samples: IntProperty(
             name="Samples",
             description="Number of samples taken from camera to first object "
                         "encountered along ray path for media calculation",
             min=1, max=100, default=35)
 
-    media_scattering_type = EnumProperty(
+    media_scattering_type: EnumProperty(
             name="Scattering Type",
             description="Scattering model",
             items=(('1', "1 Isotropic", "The simplest form of scattering because"
@@ -184,32 +184,32 @@ class RenderPovSettingsScene(PropertyGroup):
                                               " scattering.")),
             default='1')
 
-    media_diffusion_scale = FloatProperty(
+    media_diffusion_scale: FloatProperty(
             name="Scale", description="Scale factor of Media Diffusion Color",
             precision=12, step=0.00000001, min=0.000000001, max=1.0,
             default=(1.0))
 
-    media_diffusion_color = FloatVectorProperty(
+    media_diffusion_color: FloatVectorProperty(
             name="Media Diffusion Color", description="The atmospheric media color",
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.001, 0.001, 0.001),
             options={'ANIMATABLE'},
             subtype='COLOR')
 
-    media_absorption_scale = FloatProperty(
+    media_absorption_scale: FloatProperty(
             name="Scale", description="Scale factor of Media Absorption Color. "
                                       "use 1/depth of media volume in meters",
             precision=12, step=0.000001, min=0.000000001, max=1.0,
             default=(0.00002))
 
-    media_absorption_color = FloatVectorProperty(
+    media_absorption_color: FloatVectorProperty(
             name="Media Absorption Color", description="The atmospheric media absorption color",
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.0, 0.0, 0.0),
             options={'ANIMATABLE'},
             subtype='COLOR')
 
-    media_eccentricity = FloatProperty(
+    media_eccentricity: FloatProperty(
             name="Media Eccenticity Factor", description="Positive values lead"
                  " to scattering in the direction of the light and negative "
                  "values lead to scattering in the opposite direction of the "
@@ -219,40 +219,40 @@ class RenderPovSettingsScene(PropertyGroup):
             default=(0.0),
             options={'ANIMATABLE'})
 
-    baking_enable = BoolProperty(
+    baking_enable: BoolProperty(
             name="Enable Baking",
             description="Enable POV-Rays texture baking",
             default=False)
-    indentation_character = EnumProperty(
+    indentation_character: EnumProperty(
             name="Indentation",
             description="Select the indentation type",
             items=(('NONE', "None", "No indentation"),
                    ('TAB', "Tabs", "Indentation with tabs"),
                    ('SPACE', "Spaces", "Indentation with spaces")),
             default='SPACE')
-    indentation_spaces = IntProperty(
+    indentation_spaces: IntProperty(
             name="Quantity of spaces",
             description="The number of spaces for indentation",
             min=1, max=10, default=4)
 
-    comments_enable = BoolProperty(
+    comments_enable: BoolProperty(
             name="Enable Comments",
             description="Add comments to pov file",
             default=True)
 
     # Real pov options
-    command_line_switches = StringProperty(
+    command_line_switches: StringProperty(
             name="Command Line Switches",
             description="Command line switches consist of a + (plus) or - "
                         "(minus) sign, followed by one or more alphabetic "
                         "characters and possibly a numeric value",
             maxlen=500)
 
-    antialias_enable = BoolProperty(
+    antialias_enable: BoolProperty(
             name="Anti-Alias", description="Enable Anti-Aliasing",
             default=True)
 
-    antialias_method = EnumProperty(
+    antialias_method: EnumProperty(
             name="Method",
             description="AA-sampling method. Type 1 is an adaptive, "
                         "non-recursive, super-sampling method. Type 2 is an "
@@ -263,77 +263,77 @@ class RenderPovSettingsScene(PropertyGroup):
                    ("2", "stochastic AA", "Type 3 Sampling in UberPOV")),
             default="1")
 
-    antialias_confidence = FloatProperty(
+    antialias_confidence: FloatProperty(
             name="Antialias Confidence",
             description="how surely the computed color "
                         "of a given pixel is indeed"
                         "within the threshold error margin",
             min=0.0001, max=1.0000, default=0.9900, precision=4)
-    antialias_depth = IntProperty(
+    antialias_depth: IntProperty(
             name="Antialias Depth", description="Depth of pixel for sampling",
             min=1, max=9, default=3)
 
-    antialias_threshold = FloatProperty(
+    antialias_threshold: FloatProperty(
             name="Antialias Threshold", description="Tolerance for sub-pixels",
             min=0.0, max=1.0, soft_min=0.05, soft_max=0.5, default=0.03)
 
-    jitter_enable = BoolProperty(
+    jitter_enable: BoolProperty(
             name="Jitter",
             description="Enable Jittering. Adds noise into the sampling "
                         "process (it should be avoided to use jitter in "
                         "animation)",
             default=False)
 
-    jitter_amount = FloatProperty(
+    jitter_amount: FloatProperty(
             name="Jitter Amount", description="Amount of jittering",
             min=0.0, max=1.0, soft_min=0.01, soft_max=1.0, default=1.0)
 
-    antialias_gamma = FloatProperty(
+    antialias_gamma: FloatProperty(
             name="Antialias Gamma",
             description="POV-Ray compares gamma-adjusted values for super "
                         "sampling. Antialias Gamma sets the Gamma before "
                         "comparison",
             min=0.0, max=5.0, soft_min=0.01, soft_max=2.5, default=2.5)
 
-    max_trace_level = IntProperty(
+    max_trace_level: IntProperty(
             name="Max Trace Level",
             description="Number of reflections/refractions allowed on ray "
                         "path",
             min=1, max=256, default=5)
 
 #######NEW from Lanuhum
-    adc_bailout_enable = BoolProperty(
+    adc_bailout_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    adc_bailout = FloatProperty(
+    adc_bailout: FloatProperty(
             name="ADC Bailout",
             description="",
             min=0.0, max=1000.0,default=0.00392156862745, precision=3)
 
-    ambient_light_enable = BoolProperty(
+    ambient_light_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    ambient_light = FloatVectorProperty(
+    ambient_light: FloatVectorProperty(
             name="Ambient Light",
             description="Ambient light is used to simulate the effect of inter-diffuse reflection",
             precision=4, step=0.01, min=0, soft_max=1,
             default=(1, 1, 1), options={'ANIMATABLE'}, subtype='COLOR',
     )
-    global_settings_advanced = BoolProperty(
+    global_settings_advanced: BoolProperty(
             name="Advanced",
             description="",
             default=False)
 
-    irid_wavelength_enable = BoolProperty(
+    irid_wavelength_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    irid_wavelength = FloatVectorProperty(
+    irid_wavelength: FloatVectorProperty(
             name="Irid Wavelength",
             description=(
                 "Iridescence calculations depend upon the dominant "
@@ -342,7 +342,7 @@ class RenderPovSettingsScene(PropertyGroup):
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.25,0.18,0.14), options={'ANIMATABLE'}, subtype='COLOR')
 
-    charset = EnumProperty(
+    charset: EnumProperty(
             name="Charset",
             description="This allows you to specify the assumed character set of all text strings",
             items=(("ascii", "ASCII", ""),
@@ -350,22 +350,22 @@ class RenderPovSettingsScene(PropertyGroup):
                    ("sys", "SYS", "")),
             default="utf8")
 
-    max_intersections_enable = BoolProperty(
+    max_intersections_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    max_intersections = IntProperty(
+    max_intersections: IntProperty(
             name="Max Intersections",
             description="POV-Ray uses a set of internal stacks to collect ray/object intersection points",
             min=2, max=1024, default=64)
 
-    number_of_waves_enable = BoolProperty(
+    number_of_waves_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    number_of_waves = IntProperty(
+    number_of_waves: IntProperty(
             name="Number Waves",
             description=(
                 "The waves and ripples patterns are generated by summing a series of waves, "
@@ -373,62 +373,62 @@ class RenderPovSettingsScene(PropertyGroup):
             ),
             min=1, max=10, default=1000)
 
-    noise_generator_enable = BoolProperty(
+    noise_generator_enable: BoolProperty(
             name="Enable",
             description="",
             default=False)
 
-    noise_generator = IntProperty(
+    noise_generator: IntProperty(
             name="Noise Generator",
             description="There are three noise generators implemented",
             min=1, max=3, default=2)
 
     ########################### PHOTONS #######################################
-    photon_enable = BoolProperty(
+    photon_enable: BoolProperty(
             name="Photons",
             description="Enable global photons",
             default=False)
 
-    photon_enable_count = BoolProperty(
+    photon_enable_count: BoolProperty(
             name="Spacing / Count",
             description="Enable count photons",
             default=False)
 
-    photon_count = IntProperty(
+    photon_count: IntProperty(
             name="Count",
             description="Photons count",
             min=1, max=100000000, default=20000)
 
-    photon_spacing = FloatProperty(
+    photon_spacing: FloatProperty(
             name="Spacing",
             description="Average distance between photons on surfaces. half "
                         "this get four times as many surface photons",
             min=0.001, max=1.000, default=0.005,
             soft_min=0.001, soft_max=1.000, precision=3)
 
-    photon_max_trace_level = IntProperty(
+    photon_max_trace_level: IntProperty(
             name="Max Trace Level",
             description="Number of reflections/refractions allowed on ray "
                         "path",
             min=1, max=256, default=5)
 
-    photon_adc_bailout = FloatProperty(
+    photon_adc_bailout: FloatProperty(
             name="ADC Bailout",
             description="The adc_bailout for photons. Use adc_bailout = "
                         "0.01 / brightest_ambient_object for good results",
             min=0.0, max=1000.0, default=0.1,
             soft_min=0.0, soft_max=1.0, precision=3)
 
-    photon_gather_min = IntProperty(
+    photon_gather_min: IntProperty(
             name="Gather Min", description="Minimum number of photons gathered"
                                            "for each point",
             min=1, max=256, default=20)
 
-    photon_gather_max = IntProperty(
+    photon_gather_max: IntProperty(
             name="Gather Max", description="Maximum number of photons gathered for each point",
             min=1, max=256, default=100)
 
-    photon_map_file_save_load = EnumProperty(
+    photon_map_file_save_load: EnumProperty(
             name="Operation",
             description="Load or Save photon map file",
             items=(("NONE", "None", ""),
@@ -436,107 +436,107 @@ class RenderPovSettingsScene(PropertyGroup):
                    ("load", "Load", "")),
             default="NONE")
 
-    photon_map_filename = StringProperty(
+    photon_map_filename: StringProperty(
             name="Filename",
             description="",
             maxlen=1024)
 
-    photon_map_dir = StringProperty(
+    photon_map_dir: StringProperty(
             name="Directory",
             description="",
             maxlen=1024, subtype="DIR_PATH")
 
-    photon_map_file = StringProperty(
+    photon_map_file: StringProperty(
             name="File",
             description="",
             maxlen=1024, subtype="FILE_PATH")
 
     #########RADIOSITY########
-    radio_adc_bailout = FloatProperty(
+    radio_adc_bailout: FloatProperty(
             name="ADC Bailout",
             description="The adc_bailout for radiosity rays. Use "
                         "adc_bailout = 0.01 / brightest_ambient_object for good results",
             min=0.0, max=1000.0, soft_min=0.0, soft_max=1.0, default=0.0039, precision=4)
 
-    radio_always_sample = BoolProperty(
+    radio_always_sample: BoolProperty(
             name="Always Sample",
             description="Only use the data from the pretrace step and not gather "
                         "any new samples during the final radiosity pass",
             default=False)
 
-    radio_brightness = FloatProperty(
+    radio_brightness: FloatProperty(
             name="Brightness",
             description="Amount objects are brightened before being returned "
                         "upwards to the rest of the system",
             min=0.0, max=1000.0, soft_min=0.0, soft_max=10.0, default=1.0)
 
-    radio_count = IntProperty(
+    radio_count: IntProperty(
             name="Ray Count",
             description="Number of rays for each new radiosity value to be calculated "
                         "(halton sequence over 1600)",
             min=1, max=10000, soft_max=1600, default=35)
 
-    radio_error_bound = FloatProperty(
+    radio_error_bound: FloatProperty(
             name="Error Bound",
             description="One of the two main speed/quality tuning values, "
                         "lower values are more accurate",
             min=0.0, max=1000.0, soft_min=0.1, soft_max=10.0, default=1.8)
 
-    radio_gray_threshold = FloatProperty(
+    radio_gray_threshold: FloatProperty(
             name="Gray Threshold",
             description="One of the two main speed/quality tuning values, "
                         "lower values are more accurate",
             min=0.0, max=1.0, soft_min=0, soft_max=1, default=0.0)
 
-    radio_low_error_factor = FloatProperty(
+    radio_low_error_factor: FloatProperty(
             name="Low Error Factor",
             description="Just enough samples is slightly blotchy. Low error changes error "
                         "tolerance for less critical last refining pass",
             min=0.000001, max=1.0, soft_min=0.000001, soft_max=1.0, default=0.5)
 
-    radio_media = BoolProperty(
+    radio_media: BoolProperty(
             name="Media", description="Radiosity estimation can be affected by media",
             default=True)
 
-    radio_subsurface = BoolProperty(
+    radio_subsurface: BoolProperty(
             name="Subsurface", description="Radiosity estimation can be affected by Subsurface Light Transport",
             default=False)
 
-    radio_minimum_reuse = FloatProperty(
+    radio_minimum_reuse: FloatProperty(
             name="Minimum Reuse",
             description="Fraction of the screen width which sets the minimum radius of reuse "
                         "for each sample point (At values higher than 2% expect errors)",
             min=0.0, max=1.0, soft_min=0.1, soft_max=0.1, default=0.015, precision=3)
 
-    radio_maximum_reuse = FloatProperty(
+    radio_maximum_reuse: FloatProperty(
             name="Maximum Reuse",
             description="The maximum reuse parameter works in conjunction with, and is similar to that of minimum reuse, "
                         "the only difference being that it is an upper bound rather than a lower one",
             min=0.0, max=1.0,default=0.2, precision=3)
 
-    radio_nearest_count = IntProperty(
+    radio_nearest_count: IntProperty(
             name="Nearest Count",
             description="Number of old ambient values blended together to "
                         "create a new interpolated value",
             min=1, max=20, default=5)
 
-    radio_normal = BoolProperty(
+    radio_normal: BoolProperty(
             name="Normals", description="Radiosity estimation can be affected by normals",
             default=False)
 
-    radio_recursion_limit = IntProperty(
+    radio_recursion_limit: IntProperty(
             name="Recursion Limit",
             description="how many recursion levels are used to calculate "
                         "the diffuse inter-reflection",
             min=1, max=20, default=1)
 
-    radio_pretrace_start = FloatProperty(
+    radio_pretrace_start: FloatProperty(
             name="Pretrace Start",
             description="Fraction of the screen width which sets the size of the "
                         "blocks in the mosaic preview first pass",
             min=0.01, max=1.00, soft_min=0.02, soft_max=1.0, default=0.08)
 
-    radio_pretrace_end = FloatProperty(
+    radio_pretrace_end: FloatProperty(
             name="Pretrace End",
             description="Fraction of the screen width which sets the size of the blocks "
                         "in the mosaic preview last pass",
@@ -546,30 +546,30 @@ class RenderPovSettingsScene(PropertyGroup):
 # Material POV properties.
 ###############################################################################
 class RenderPovSettingsMaterial(PropertyGroup):
-    irid_enable = BoolProperty(
+    irid_enable: BoolProperty(
             name="Iridescence coating",
             description="Newton's thin film interference (like an oil slick on a puddle of "
                         "water or the rainbow hues of a soap bubble.)",
             default=False)
 
-    mirror_use_IOR = BoolProperty(
+    mirror_use_IOR: BoolProperty(
             name="Correct Reflection",
             description="Use same IOR as raytrace transparency to calculate mirror reflections. "
                         "More physically correct",
             default=False)
 
-    mirror_metallic = BoolProperty(
+    mirror_metallic: BoolProperty(
             name="Metallic Reflection",
             description="mirror reflections get colored as diffuse (for metallic materials)",
             default=False)
 
-    conserve_energy = BoolProperty(
+    conserve_energy: BoolProperty(
             name="Conserve Energy",
             description="Light transmitted is more correctly reduced by mirror reflections, "
                         "also the sum of diffuse and translucency gets reduced below one ",
             default=True)
 
-    irid_amount = FloatProperty(
+    irid_amount: FloatProperty(
             name="amount",
             description="Contribution of the iridescence effect to the overall surface color. "
                         "As a rule of thumb keep to around 0.25 (25% contribution) or less, "
@@ -577,60 +577,60 @@ class RenderPovSettingsMaterial(PropertyGroup):
                         "the diffuse and possibly the ambient values of the surface",
             min=0.0, max=1.0, soft_min=0.01, soft_max=1.0, default=0.25)
 
-    irid_thickness = FloatProperty(
+    irid_thickness: FloatProperty(
             name="thickness",
             description="A very thin film will have a high frequency of color changes while a "
                         "thick film will have large areas of color",
             min=0.0, max=1000.0, soft_min=0.1, soft_max=10.0, default=1)
 
-    irid_turbulence = FloatProperty(
+    irid_turbulence: FloatProperty(
             name="turbulence", description="This parameter varies the thickness",
             min=0.0, max=10.0, soft_min=0.000, soft_max=1.0, default=0)
 
-    interior_fade_color = FloatVectorProperty(
+    interior_fade_color: FloatVectorProperty(
             name="Interior Fade Color", description="Color of filtered attenuation for transparent "
                                            "materials",
             precision=4, step=0.01, min=0.0, soft_max=1.0,
             default=(0, 0, 0), options={'ANIMATABLE'}, subtype='COLOR')
 
-    caustics_enable = BoolProperty(
+    caustics_enable: BoolProperty(
             name="Caustics",
             description="use only fake refractive caustics (default) or photon based "
                         "reflective/refractive caustics",
             default=True)
 
-    fake_caustics = BoolProperty(
+    fake_caustics: BoolProperty(
             name="Fake Caustics", description="use only (Fast) fake refractive caustics",
             default=True)
 
-    fake_caustics_power = FloatProperty(
+    fake_caustics_power: FloatProperty(
             name="Fake caustics power",
             description="Values typically range from 0.0 to 1.0 or higher. Zero is no caustics. "
                         "Low, non-zero values give broad hot-spots while higher values give "
                         "tighter, smaller simulated focal points",
             min=0.00, max=10.0, soft_min=0.00, soft_max=5.0, default=0.07)
 
-    refraction_caustics = BoolProperty(
+    refraction_caustics: BoolProperty(
             name="Refractive Caustics", description="hotspots of light focused when going through the material",
             default=True)
 
-    photons_dispersion = FloatProperty(
+    photons_dispersion: FloatProperty(
             name="Chromatic Dispersion",
             description="Light passing through will be separated according to wavelength. "
                         "This ratio of refractive indices for violet to red controls how much "
                         "the colors are spread out 1 = no dispersion, good values are 1.01 to 1.1",
             min=1.0000, max=10.000, soft_min=1.0000, soft_max=1.1000, precision=4, default=1.0000)
 
-    photons_dispersion_samples = IntProperty(
+    photons_dispersion_samples: IntProperty(
             name="Dispersion Samples", description="Number of color-steps for dispersion",
             min=2, max=128, default=7)
 
-    photons_reflection = BoolProperty(
+    photons_reflection: BoolProperty(
             name="Reflective Photon Caustics",
             description="Use this to make your Sauron's ring ;-P",
             default=False)
 
-    refraction_type = EnumProperty(
+    refraction_type: EnumProperty(
             items=[
                    ("1", "Fake Caustics", "use fake caustics"),
                    ("2", "Photons Caustics", "use photons for refractive caustics")],
@@ -639,7 +639,7 @@ class RenderPovSettingsMaterial(PropertyGroup):
             default="1")
 
     ##################################CustomPOV Code############################
-    replacement_text = StringProperty(
+    replacement_text: StringProperty(
             name="Declared name:",
             description="Type the declared name in custom POV code or an external "
                         ".inc it points at. texture {} expected",
@@ -737,13 +737,13 @@ class RenderPovSettingsMaterial(PropertyGroup):
         else:
             ob.pov.mesh_write_as = ob.pov.mesh_write_as_old
 
-    material_use_nodes = BoolProperty(name="Use nodes", description="", update=use_material_nodes_callback, default=False)
-    material_active_node = EnumProperty(name="Active node", description="", items=node_enum_callback, update=node_active_callback)
-    preview_settings = BoolProperty(name="Preview Settings", description="",default=False)
-    object_preview_transform = BoolProperty(name="Transform object", description="",default=False)
-    object_preview_scale = FloatProperty(name="XYZ", min=0.5, max=2.0, default=1.0)
-    object_preview_rotate = FloatVectorProperty(name="Rotate", description="", min=-180.0, max=180.0,default=(0.0,0.0,0.0), subtype='XYZ')
-    object_preview_bgcontrast = FloatProperty(name="Contrast", min=0.0, max=1.0, default=0.5)
+    material_use_nodes: BoolProperty(name="Use nodes", description="", update=use_material_nodes_callback, default=False)
+    material_active_node: EnumProperty(name="Active node", description="", items=node_enum_callback, update=node_active_callback)
+    preview_settings: BoolProperty(name="Preview Settings", description="",default=False)
+    object_preview_transform: BoolProperty(name="Transform object", description="",default=False)
+    object_preview_scale: FloatProperty(name="XYZ", min=0.5, max=2.0, default=1.0)
+    object_preview_rotate: FloatVectorProperty(name="Rotate", description="", min=-180.0, max=180.0,default=(0.0,0.0,0.0), subtype='XYZ')
+    object_preview_bgcontrast: FloatProperty(name="Contrast", min=0.0, max=1.0, default=0.5)
 
 
 ###############################################################################
@@ -752,13 +752,13 @@ class RenderPovSettingsMaterial(PropertyGroup):
 class PovraySocketUniversal(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketUniversal'
     bl_label = 'Povray Socket'
-    value_unlimited = bpy.props.FloatProperty(default=0.0)
-    value_0_1 = bpy.props.FloatProperty(min=0.0,max=1.0,default=0.0)
-    value_0_10 = bpy.props.FloatProperty(min=0.0,max=10.0,default=0.0)
-    value_000001_10 = bpy.props.FloatProperty(min=0.000001,max=10.0,default=0.0)
-    value_1_9 = bpy.props.IntProperty(min=1,max=9,default=1)
-    value_0_255 = bpy.props.IntProperty(min=0,max=255,default=0)
-    percent = bpy.props.FloatProperty(min=0.0,max=100.0,default=0.0)
+    value_unlimited: bpy.props.FloatProperty(default=0.0)
+    value_0_1: bpy.props.FloatProperty(min=0.0,max=1.0,default=0.0)
+    value_0_10: bpy.props.FloatProperty(min=0.0,max=10.0,default=0.0)
+    value_000001_10: bpy.props.FloatProperty(min=0.000001,max=10.0,default=0.0)
+    value_1_9: bpy.props.IntProperty(min=1,max=9,default=1)
+    value_0_255: bpy.props.IntProperty(min=0,max=255,default=0)
+    percent: bpy.props.FloatProperty(min=0.0,max=100.0,default=0.0)
     def draw(self, context, layout, node, text):
         space = context.space_data
         tree = space.edit_tree
@@ -805,7 +805,7 @@ class PovraySocketUniversal(bpy.types.NodeSocket):
 class PovraySocketFloat_0_1(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloat_0_1'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(description="Input node Value_0_1",min=0,max=1,default=0)
+    default_value: bpy.props.FloatProperty(description="Input node Value_0_1",min=0,max=1,default=0)
     def draw(self, context, layout, node, text):
         if self.is_linked:
             layout.label(text)
@@ -818,7 +818,7 @@ class PovraySocketFloat_0_1(bpy.types.NodeSocket):
 class PovraySocketFloat_0_10(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloat_0_10'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(description="Input node Value_0_10",min=0,max=10,default=0)
+    default_value: bpy.props.FloatProperty(description="Input node Value_0_10",min=0,max=10,default=0)
     def draw(self, context, layout, node, text):
         if node.bl_idname == 'ShaderNormalMapNode' and node.inputs[2].is_linked:
             layout.label('')
@@ -833,7 +833,7 @@ class PovraySocketFloat_0_10(bpy.types.NodeSocket):
 class PovraySocketFloat_10(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloat_10'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(description="Input node Value_10",min=-10,max=10,default=0)
+    default_value: bpy.props.FloatProperty(description="Input node Value_10",min=-10,max=10,default=0)
     def draw(self, context, layout, node, text):
         if node.bl_idname == 'ShaderNormalMapNode' and node.inputs[2].is_linked:
             layout.label('')
@@ -848,7 +848,7 @@ class PovraySocketFloat_10(bpy.types.NodeSocket):
 class PovraySocketFloatPositive(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloatPositive'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(description="Input Node Value Positive", min=0.0, default=0)
+    default_value: bpy.props.FloatProperty(description="Input Node Value Positive", min=0.0, default=0)
     def draw(self, context, layout, node, text):
         if self.is_linked:
             layout.label(text)
@@ -860,7 +860,7 @@ class PovraySocketFloatPositive(bpy.types.NodeSocket):
 class PovraySocketFloat_000001_10(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloat_000001_10'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(min=0.000001,max=10,default=0.000001)
+    default_value: bpy.props.FloatProperty(min=0.000001,max=10,default=0.000001)
     def draw(self, context, layout, node, text):
         if self.is_output or self.is_linked:
             layout.label(text)
@@ -872,7 +872,7 @@ class PovraySocketFloat_000001_10(bpy.types.NodeSocket):
 class PovraySocketFloatUnlimited(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketFloatUnlimited'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(default = 0.0)
+    default_value: bpy.props.FloatProperty(default = 0.0)
     def draw(self, context, layout, node, text):
         if self.is_linked:
             layout.label(text)
@@ -884,7 +884,7 @@ class PovraySocketFloatUnlimited(bpy.types.NodeSocket):
 class PovraySocketInt_1_9(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketInt_1_9'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.IntProperty(description="Input node Value_1_9",min=1,max=9,default=6)
+    default_value: bpy.props.IntProperty(description="Input node Value_1_9",min=1,max=9,default=6)
     def draw(self, context, layout, node, text):
         if self.is_linked:
             layout.label(text)
@@ -896,7 +896,7 @@ class PovraySocketInt_1_9(bpy.types.NodeSocket):
 class PovraySocketInt_0_256(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketInt_0_256'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.IntProperty(min=0,max=255,default=0)
+    default_value: bpy.props.IntProperty(min=0,max=255,default=0)
     def draw(self, context, layout, node, text):
         if self.is_linked:
             layout.label(text)
@@ -910,7 +910,7 @@ class PovraySocketPattern(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketPattern'
     bl_label = 'Povray Socket'
 
-    default_value = bpy.props.EnumProperty(
+    default_value: bpy.props.EnumProperty(
             name="Pattern",
             description="Select the pattern",
             items=(('boxed', "Boxed", ""),('brick', "Brick", ""),('cells', "Cells", ""), ('checker', "Checker", ""),
@@ -934,7 +934,7 @@ class PovraySocketColor(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketColor'
     bl_label = 'Povray Socket'
 
-    default_value = bpy.props.FloatVectorProperty(
+    default_value: bpy.props.FloatVectorProperty(
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.0, 0.0, 0.0), options={'ANIMATABLE'}, subtype='COLOR')
 
@@ -951,11 +951,11 @@ class PovraySocketColorRGBFT(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketColorRGBFT'
     bl_label = 'Povray Socket'
 
-    default_value = bpy.props.FloatVectorProperty(
+    default_value: bpy.props.FloatVectorProperty(
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.0, 0.0, 0.0), options={'ANIMATABLE'}, subtype='COLOR')
-    f = bpy.props.FloatProperty(default = 0.0,min=0.0,max=1.0)
-    t = bpy.props.FloatProperty(default = 0.0,min=0.0,max=1.0)
+    f: bpy.props.FloatProperty(default = 0.0,min=0.0,max=1.0)
+    t: bpy.props.FloatProperty(default = 0.0,min=0.0,max=1.0)
     def draw(self, context, layout, node, text):
         if self.is_output or self.is_linked:
             layout.label(text)
@@ -968,7 +968,7 @@ class PovraySocketColorRGBFT(bpy.types.NodeSocket):
 class PovraySocketTexture(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketTexture'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.IntProperty()
+    default_value: bpy.props.IntProperty()
     def draw(self, context, layout, node, text):
         layout.label(text)
 
@@ -980,7 +980,7 @@ class PovraySocketTexture(bpy.types.NodeSocket):
 class PovraySocketTransform(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketTransform'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.IntProperty(min=0,max=255,default=0)
+    default_value: bpy.props.IntProperty(min=0,max=255,default=0)
     def draw(self, context, layout, node, text):
         layout.label(text)
 
@@ -990,7 +990,7 @@ class PovraySocketTransform(bpy.types.NodeSocket):
 class PovraySocketNormal(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketNormal'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.IntProperty(min=0,max=255,default=0)
+    default_value: bpy.props.IntProperty(min=0,max=255,default=0)
     def draw(self, context, layout, node, text):
         layout.label(text)
 
@@ -1000,9 +1000,9 @@ class PovraySocketNormal(bpy.types.NodeSocket):
 class PovraySocketSlope(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketSlope'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.FloatProperty(min = 0.0, max = 1.0)
-    height = bpy.props.FloatProperty(min = 0.0, max = 10.0)
-    slope = bpy.props.FloatProperty(min = -10.0, max = 10.0)
+    default_value: bpy.props.FloatProperty(min = 0.0, max = 1.0)
+    height: bpy.props.FloatProperty(min = 0.0, max = 10.0)
+    slope: bpy.props.FloatProperty(min = -10.0, max = 10.0)
     def draw(self, context, layout, node, text):
         if self.is_output or self.is_linked:
             layout.label(text)
@@ -1016,7 +1016,7 @@ class PovraySocketSlope(bpy.types.NodeSocket):
 class PovraySocketMap(bpy.types.NodeSocket):
     bl_idname = 'PovraySocketMap'
     bl_label = 'Povray Socket'
-    default_value = bpy.props.StringProperty()
+    default_value: bpy.props.StringProperty()
     def draw(self, context, layout, node, text):
         layout.label(text)
     def draw_color(self, context, node):
@@ -1193,14 +1193,14 @@ node_categories = [
 ###############################################################################
 class RenderPovSettingsTexture(PropertyGroup):
     #Custom texture gamma
-    tex_gamma_enable = BoolProperty(
+    tex_gamma_enable: BoolProperty(
             name="Enable custom texture gamma",
             description="Notify some custom gamma for which texture has been precorrected "
                         "without the file format carrying it and only if it differs from your "
                         "OS expected standard (see pov doc)",
             default=False)
 
-    tex_gamma_value = FloatProperty(
+    tex_gamma_value: FloatProperty(
             name="Custom texture gamma",
             description="value for which the file was issued e.g. a Raw photo is gamma 1.0",
             min=0.45, max=5.00, soft_min=1.00, soft_max=2.50, default=1.00)
@@ -1215,7 +1215,7 @@ class RenderPovSettingsTexture(PropertyGroup):
 
 
 
-    tex_pattern_type = EnumProperty(
+    tex_pattern_type: EnumProperty(
             name="Texture_Type",
             description="Choose between Blender or POV-Ray parameters to specify texture",
             items= (('agate', 'Agate', '','PLUGIN', 0),
@@ -1259,18 +1259,18 @@ class RenderPovSettingsTexture(PropertyGroup):
             default='emulator',
             )
 
-    magnet_style = EnumProperty(
+    magnet_style: EnumProperty(
             name="Magnet style",
             description="magnet or julia",
             items=(('mandel', "Mandelbrot", ""),('julia', "Julia", "")),
             default='julia')
 
-    magnet_type = IntProperty(
+    magnet_type: IntProperty(
             name="Magnet_type",
             description="1 or 2",
             min=1, max=2, default=2)
 
-    warp_types = EnumProperty(
+    warp_types: EnumProperty(
             name="Warp Types",
             description="Select the type of warp",
             items=(('PLANAR', "Planar", ""), ('CUBIC', "Cubic", ""),
@@ -1278,224 +1278,224 @@ class RenderPovSettingsTexture(PropertyGroup):
                    ('CYLINDRICAL', "Cylindrical", ""), ('NONE', "None", "No indentation")),
             default='NONE')
 
-    warp_orientation = EnumProperty(
+    warp_orientation: EnumProperty(
             name="Warp Orientation",
             description="Select the orientation of warp",
             items=(('x', "X", ""), ('y', "Y", ""), ('z', "Z", "")),
             default='y')
 
-    wave_type = EnumProperty(
+    wave_type: EnumProperty(
             name="Waves type",
             description="Select the type of waves",
             items=(('ramp', "Ramp", ""), ('sine', "Sine", ""), ('scallop', "Scallop", ""),
                    ('cubic', "Cubic", ""), ('poly', "Poly", ""), ('triangle', 'Triangle', "")),
             default='ramp')
 
-    gen_noise = IntProperty(
+    gen_noise: IntProperty(
             name="Noise Generators",
             description="Noise Generators",
             min=1, max=3, default=1)
 
-    warp_dist_exp = FloatProperty(
+    warp_dist_exp: FloatProperty(
             name="Distance exponent",
             description="Distance exponent",
             min=0.0, max=100.0, default=1.0)
 
-    warp_tor_major_radius = FloatProperty(
+    warp_tor_major_radius: FloatProperty(
             name="Major radius",
             description="Torus is distance from major radius",
             min=0.0, max=5.0, default=1.0)
 
 
-    warp_turbulence_x = FloatProperty(
+    warp_turbulence_x: FloatProperty(
             name="Turbulence X",
             description="Turbulence X",
             min=0.0, max=5.0, default=0.0)
 
-    warp_turbulence_y = FloatProperty(
+    warp_turbulence_y: FloatProperty(
             name="Turbulence Y",
             description="Turbulence Y",
             min=0.0, max=5.0, default=0.0)
 
-    warp_turbulence_z = FloatProperty(
+    warp_turbulence_z: FloatProperty(
             name="Turbulence Z",
             description="Turbulence Z",
             min=0.0, max=5.0, default=0.0)
 
-    modifier_octaves = IntProperty(
+    modifier_octaves: IntProperty(
             name="Turbulence octaves",
             description="Turbulence octaves",
             min=1, max=10, default=1)
 
-    modifier_lambda = FloatProperty(
+    modifier_lambda: FloatProperty(
             name="Turbulence lambda",
             description="Turbulence lambda",
             min=0.0, max=5.0, default=1.00)
 
-    modifier_omega = FloatProperty(
+    modifier_omega: FloatProperty(
             name="Turbulence omega",
             description="Turbulence omega",
             min=0.0, max=10.0, default=1.00)
 
-    modifier_phase = FloatProperty(
+    modifier_phase: FloatProperty(
             name="Phase",
             description="The phase value causes the map entries to be shifted so that the map "
                         "starts and ends at a different place",
             min=0.0, max=2.0, default=0.0)
 
-    modifier_frequency = FloatProperty(
+    modifier_frequency: FloatProperty(
             name="Frequency",
             description="The frequency keyword adjusts the number of times that a color map "
                         "repeats over one cycle of a pattern",
             min=0.0, max=25.0, default=2.0)
 
-    modifier_turbulence = FloatProperty(
+    modifier_turbulence: FloatProperty(
             name="Turbulence",
             description="Turbulence",
             min=0.0, max=5.0, default=2.0)
 
-    modifier_numbers = IntProperty(
+    modifier_numbers: IntProperty(
             name="Numbers",
             description="Numbers",
             min=1, max=27, default=2)
 
-    modifier_control0 = IntProperty(
+    modifier_control0: IntProperty(
             name="Control0",
             description="Control0",
             min=0, max=100, default=1)
 
-    modifier_control1 = IntProperty(
+    modifier_control1: IntProperty(
             name="Control1",
             description="Control1",
             min=0, max=100, default=1)
 
-    brick_size_x = FloatProperty(
+    brick_size_x: FloatProperty(
             name="Brick size x",
             description="",
             min=0.0000, max=1.0000, default=0.2500)
 
-    brick_size_y = FloatProperty(
+    brick_size_y: FloatProperty(
             name="Brick size y",
             description="",
             min=0.0000, max=1.0000, default=0.0525)
 
-    brick_size_z = FloatProperty(
+    brick_size_z: FloatProperty(
             name="Brick size z",
             description="",
             min=0.0000, max=1.0000, default=0.1250)
 
-    brick_mortar = FloatProperty(
+    brick_mortar: FloatProperty(
             name="Mortar",
             description="Mortar",
             min=0.000, max=1.500, default=0.01)
 
-    julia_complex_1 = FloatProperty(
+    julia_complex_1: FloatProperty(
             name="Julia Complex 1",
             description="",
             min=0.000, max=1.500, default=0.360)
 
-    julia_complex_2 = FloatProperty(
+    julia_complex_2: FloatProperty(
             name="Julia Complex 2",
             description="",
             min=0.000, max=1.500, default=0.250)
 
-    f_iter = IntProperty(
+    f_iter: IntProperty(
             name="Fractal Iteration",
             description="",
             min=0, max=100, default=20)
 
-    f_exponent = IntProperty(
+    f_exponent: IntProperty(
             name="Fractal Exponent",
             description="",
             min=2, max=33, default=2)
 
-    f_ior = IntProperty(
+    f_ior: IntProperty(
             name="Fractal Interior",
             description="",
             min=1, max=6, default=1)
 
-    f_ior_fac = FloatProperty(
+    f_ior_fac: FloatProperty(
             name="Fractal Interior Factor",
             description="",
             min=0.0, max=10.0, default=1.0)
 
-    f_eor = IntProperty(
+    f_eor: IntProperty(
             name="Fractal Exterior",
             description="",
             min=1, max=8, default=1)
 
-    f_eor_fac = FloatProperty(
+    f_eor_fac: FloatProperty(
             name="Fractal Exterior Factor",
             description="",
             min=0.0, max=10.0, default=1.0)
 
-    grad_orient_x= IntProperty(
+    grad_orient_x: IntProperty(
             name="Gradient orientation X",
             description="",
             min=0, max=1, default=0)
 
-    grad_orient_y= IntProperty(
+    grad_orient_y: IntProperty(
             name="Gradient orientation Y",
             description="",
             min=0, max=1, default=1)
 
-    grad_orient_z= IntProperty(
+    grad_orient_z: IntProperty(
             name="Gradient orientation Z",
             description="",
             min=0, max=1, default=0)
 
-    pave_sides = EnumProperty(
+    pave_sides: EnumProperty(
             name="Pavement sides",
             description="",
             items=(('3', "3", ""), ('4', "4", ""), ('6', "6", "")),
             default='3')
 
-    pave_pat_2= IntProperty(
+    pave_pat_2: IntProperty(
             name="Pavement pattern 2",
             description="maximum: 2",
             min=1, max=2, default=2)
 
-    pave_pat_3= IntProperty(
+    pave_pat_3: IntProperty(
             name="Pavement pattern 3",
             description="maximum: 3",
             min=1, max=3, default=3)
 
-    pave_pat_4= IntProperty(
+    pave_pat_4: IntProperty(
             name="Pavement pattern 4",
             description="maximum: 4",
             min=1, max=4, default=4)
 
-    pave_pat_5= IntProperty(
+    pave_pat_5: IntProperty(
             name="Pavement pattern 5",
             description="maximum: 5",
             min=1, max=5, default=5)
 
-    pave_pat_7= IntProperty(
+    pave_pat_7: IntProperty(
             name="Pavement pattern 7",
             description="maximum: 7",
             min=1, max=7, default=7)
 
-    pave_pat_12= IntProperty(
+    pave_pat_12: IntProperty(
             name="Pavement pattern 12",
             description="maximum: 12",
             min=1, max=12, default=12)
 
-    pave_pat_22= IntProperty(
+    pave_pat_22: IntProperty(
             name="Pavement pattern 22",
             description="maximum: 22",
             min=1, max=22, default=22)
 
-    pave_pat_35= IntProperty(
+    pave_pat_35: IntProperty(
             name="Pavement pattern 35",
             description="maximum: 35",
             min=1, max=35, default=35)
 
-    pave_tiles= IntProperty(
+    pave_tiles: IntProperty(
             name="Pavement tiles",
             description="If sides = 6, maximum tiles 5!!!",
             min=1, max=6, default=1)
 
-    pave_form= IntProperty(
+    pave_form: IntProperty(
             name="Pavement form",
             description="",
             min=0, max=4, default=0)
@@ -1503,7 +1503,7 @@ class RenderPovSettingsTexture(PropertyGroup):
     #########FUNCTIONS#############################################################################
     #########FUNCTIONS#############################################################################
 
-    func_list = EnumProperty(
+    func_list: EnumProperty(
             name="Functions",
             description="Select the function for create pattern",
             items=(('NONE', "None", "No indentation"),
@@ -1557,131 +1557,131 @@ class RenderPovSettingsTexture(PropertyGroup):
 
             default='NONE')
 
-    func_x = FloatProperty(
+    func_x: FloatProperty(
             name="FX",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_plus_x = EnumProperty(
+    func_plus_x: EnumProperty(
             name="Func plus x",
             description="",
             items=(('NONE', "None", ""), ('increase', "*", ""), ('plus', "+", "")),
             default='NONE')
 
-    func_y = FloatProperty(
+    func_y: FloatProperty(
             name="FY",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_plus_y = EnumProperty(
+    func_plus_y: EnumProperty(
             name="Func plus y",
             description="",
             items=(('NONE', "None", ""), ('increase', "*", ""), ('plus', "+", "")),
             default='NONE')
 
-    func_z = FloatProperty(
+    func_z: FloatProperty(
             name="FZ",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_plus_z = EnumProperty(
+    func_plus_z: EnumProperty(
             name="Func plus z",
             description="",
             items=(('NONE', "None", ""), ('increase', "*", ""), ('plus', "+", "")),
             default='NONE')
 
-    func_P0 = FloatProperty(
+    func_P0: FloatProperty(
             name="P0",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P1 = FloatProperty(
+    func_P1: FloatProperty(
             name="P1",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P2 = FloatProperty(
+    func_P2: FloatProperty(
             name="P2",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P3 = FloatProperty(
+    func_P3: FloatProperty(
             name="P3",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P4 = FloatProperty(
+    func_P4: FloatProperty(
             name="P4",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P5 = FloatProperty(
+    func_P5: FloatProperty(
             name="P5",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P6 = FloatProperty(
+    func_P6: FloatProperty(
             name="P6",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P7 = FloatProperty(
+    func_P7: FloatProperty(
             name="P7",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P8 = FloatProperty(
+    func_P8: FloatProperty(
             name="P8",
             description="",
             min=0.0, max=25.0, default=1.0)
 
-    func_P9 = FloatProperty(
+    func_P9: FloatProperty(
             name="P9",
             description="",
             min=0.0, max=25.0, default=1.0)
 
     #########################################
-    tex_rot_x = FloatProperty(
+    tex_rot_x: FloatProperty(
             name="Rotate X",
             description="",
             min=-180.0, max=180.0, default=0.0)
 
-    tex_rot_y = FloatProperty(
+    tex_rot_y: FloatProperty(
             name="Rotate Y",
             description="",
             min=-180.0, max=180.0, default=0.0)
 
-    tex_rot_z = FloatProperty(
+    tex_rot_z: FloatProperty(
             name="Rotate Z",
             description="",
             min=-180.0, max=180.0, default=0.0)
 
-    tex_mov_x = FloatProperty(
+    tex_mov_x: FloatProperty(
             name="Move X",
             description="",
             min=-100000.0, max=100000.0, default=0.0)
 
-    tex_mov_y = FloatProperty(
+    tex_mov_y: FloatProperty(
             name="Move Y",
             description="",
             min=-100000.0, max=100000.0, default=0.0)
 
-    tex_mov_z = FloatProperty(
+    tex_mov_z: FloatProperty(
             name="Move Z",
             description="",
             min=-100000.0, max=100000.0, default=0.0)
 
-    tex_scale_x = FloatProperty(
+    tex_scale_x: FloatProperty(
             name="Scale X",
             description="",
             min=0.0, max=10000.0, default=1.0)
 
-    tex_scale_y = FloatProperty(
+    tex_scale_y: FloatProperty(
             name="Scale Y",
             description="",
             min=0.0, max=10000.0, default=1.0)
 
-    tex_scale_z = FloatProperty(
+    tex_scale_z: FloatProperty(
             name="Scale Z",
             description="",
             min=0.0, max=10000.0, default=1.0)
@@ -1693,7 +1693,7 @@ class RenderPovSettingsTexture(PropertyGroup):
 
 class RenderPovSettingsObject(PropertyGroup):
     # Pov inside_vector used for CSG
-    inside_vector = FloatVectorProperty(
+    inside_vector: FloatVectorProperty(
             name="CSG Inside Vector", description="Direction to shoot CSG inside test rays at",
             precision=4, step=0.01, min=0, soft_max=1,
             default=(0.001, 0.001, 0.5),
@@ -1701,7 +1701,7 @@ class RenderPovSettingsObject(PropertyGroup):
             subtype='XYZ')
 
     # Importance sampling
-    importance_value = FloatProperty(
+    importance_value: FloatProperty(
             name="Radiosity Importance",
             description="Priority value relative to other objects for sampling radiosity rays. "
                         "Increase to get more radiosity rays at comparatively small yet "
@@ -1709,7 +1709,7 @@ class RenderPovSettingsObject(PropertyGroup):
             min=0.01, max=1.00, default=0.50)
 
     # Collect photons
-    collect_photons = BoolProperty(
+    collect_photons: BoolProperty(
             name="Receive Photon Caustics",
             description="Enable object to collect photons from other objects caustics. Turn "
                         "off for objects that don't really need to receive caustics (e.g. objects"
@@ -1717,7 +1717,7 @@ class RenderPovSettingsObject(PropertyGroup):
             default=True)
 
     # Photons spacing_multiplier
-    spacing_multiplier = FloatProperty(
+    spacing_multiplier: FloatProperty(
             name="Photons Spacing Multiplier",
             description="Multiplier value relative to global spacing of photons. "
                         "Decrease by half to get 4x more photons at surface of "
@@ -1726,29 +1726,29 @@ class RenderPovSettingsObject(PropertyGroup):
 
     ##################################CustomPOV Code############################
     # Only DUMMIES below for now:
-    replacement_text = StringProperty(
+    replacement_text: StringProperty(
             name="Declared name:",
             description="Type the declared name in custom POV code or an external .inc "
                         "it points at. Any POV shape expected e.g: isosurface {}",
             default="")
 
     #############POV-Ray specific object properties.############################
-    object_as = StringProperty(maxlen=1024)
+    object_as: StringProperty(maxlen=1024)
 
-    imported_loc = FloatVectorProperty(
+    imported_loc: FloatVectorProperty(
         name="Imported Pov location",
         precision=6,
         default=(0.0, 0.0, 0.0))
 
-    imported_loc_cap = FloatVectorProperty(
+    imported_loc_cap: FloatVectorProperty(
         name="Imported Pov location",
         precision=6,
         default=(0.0, 0.0, 2.0))
 
-    unlock_parameters = BoolProperty(name="Lock",default = False)
+    unlock_parameters: BoolProperty(name="Lock",default = False)
 
     # not in UI yet but used for sor (lathe) / prism... pov primitives
-    curveshape = EnumProperty(
+    curveshape: EnumProperty(
             name="Povray Shape Type",
             items=(("birail", "Birail", ""),
                    ("cairo", "Cairo", ""),
@@ -1758,14 +1758,14 @@ class RenderPovSettingsObject(PropertyGroup):
                    ("sphere_sweep", "Sphere Sweep", "")),
             default="sphere_sweep")
 
-    mesh_write_as = EnumProperty(
+    mesh_write_as: EnumProperty(
             name="Mesh Write As",
             items=(("blobgrid", "Blob Grid", ""),
                    ("grid", "Grid", ""),
                    ("mesh", "Mesh", "")),
             default="mesh")
 
-    object_ior = FloatProperty(
+    object_ior: FloatProperty(
             name="IOR", description="IOR",
             min=1.0, max=10.0,default=1.0)
 
@@ -1785,128 +1785,128 @@ class RenderPovSettingsObject(PropertyGroup):
     # dispersion_samples = IntProperty(name="Samples",min=2, max=100,default=7)
     # reflection = BoolProperty(name="Reflection",description="",default=False)
     # pass_through = BoolProperty(name="Pass through",description="",default=False)
-    no_shadow = BoolProperty(name="No Shadow",default=False)
+    no_shadow: BoolProperty(name="No Shadow",default=False)
 
-    no_image = BoolProperty(name="No Image",default=False)
+    no_image: BoolProperty(name="No Image",default=False)
 
-    no_reflection = BoolProperty(name="No Reflection",default=False)
+    no_reflection: BoolProperty(name="No Reflection",default=False)
 
-    no_radiosity = BoolProperty(name="No Radiosity",default=False)
+    no_radiosity: BoolProperty(name="No Radiosity",default=False)
 
-    inverse = BoolProperty(name="Inverse",default=False)
+    inverse: BoolProperty(name="Inverse",default=False)
 
-    sturm = BoolProperty(name="Sturm",default=False)
+    sturm: BoolProperty(name="Sturm",default=False)
 
-    double_illuminate = BoolProperty(name="Double Illuminate",default=False)
+    double_illuminate: BoolProperty(name="Double Illuminate",default=False)
 
-    hierarchy = BoolProperty(name="Hierarchy",default=False)
+    hierarchy: BoolProperty(name="Hierarchy",default=False)
 
-    hollow = BoolProperty(name="Hollow",default=False)
+    hollow: BoolProperty(name="Hollow",default=False)
 
-    boundorclip = EnumProperty(
+    boundorclip: EnumProperty(
             name="Boundorclip",
             items=(("none", "None", ""),
                    ("bounded_by", "Bounded_by", ""),
                    ("clipped_by", "Clipped_by", "")),
             default="none")
-    boundorclipob = StringProperty(maxlen=1024)
+    boundorclipob: StringProperty(maxlen=1024)
 
-    addboundorclip = BoolProperty(description="",default=False)
+    addboundorclip: BoolProperty(description="",default=False)
 
-    blob_threshold = FloatProperty(name="Threshold",min=0.00, max=10.0, default=0.6)
+    blob_threshold: FloatProperty(name="Threshold",min=0.00, max=10.0, default=0.6)
 
-    blob_strength = FloatProperty(name="Strength",min=-10.00, max=10.0, default=1.00)
+    blob_strength: FloatProperty(name="Strength",min=-10.00, max=10.0, default=1.00)
 
-    res_u = IntProperty(name="U",min=100, max=1000, default=500)
+    res_u: IntProperty(name="U",min=100, max=1000, default=500)
 
-    res_v = IntProperty(name="V",min=100, max=1000, default=500)
+    res_v: IntProperty(name="V",min=100, max=1000, default=500)
 
-    contained_by = EnumProperty(
+    contained_by: EnumProperty(
             name="Contained by",
             items=(("box", "Box", ""),
                    ("sphere", "Sphere", "")),
             default="box")
 
-    container_scale = FloatProperty(name="Container Scale",min=0.0, max=10.0, default=1.00)
+    container_scale: FloatProperty(name="Container Scale",min=0.0, max=10.0, default=1.00)
 
-    threshold = FloatProperty(name="Threshold",min=0.0, max=10.0, default=0.00)
+    threshold: FloatProperty(name="Threshold",min=0.0, max=10.0, default=0.00)
 
-    accuracy = FloatProperty(name="Accuracy",min=0.0001, max=0.1, default=0.001)
+    accuracy: FloatProperty(name="Accuracy",min=0.0001, max=0.1, default=0.001)
 
-    max_gradient = FloatProperty(name="Max Gradient",min=0.0, max=100.0, default=5.0)
+    max_gradient: FloatProperty(name="Max Gradient",min=0.0, max=100.0, default=5.0)
 
-    all_intersections = BoolProperty(name="All Intersections",default=False)
+    all_intersections: BoolProperty(name="All Intersections",default=False)
 
-    max_trace = IntProperty(name="Max Trace",min=1, max=100,default=1)
+    max_trace: IntProperty(name="Max Trace",min=1, max=100,default=1)
 
 
     def prop_update_cylinder(self, context):
         if bpy.ops.pov.cylinder_update.poll():
             bpy.ops.pov.cylinder_update()
-    cylinder_radius = FloatProperty(name="Cylinder R",min=0.00, max=10.0, default=0.04, update=prop_update_cylinder)
-    cylinder_location_cap = FloatVectorProperty(
+    cylinder_radius: FloatProperty(name="Cylinder R",min=0.00, max=10.0, default=0.04, update=prop_update_cylinder)
+    cylinder_location_cap: FloatVectorProperty(
             name="Cylinder Cap Location", subtype='TRANSLATION',
             description="The position of the 'other' end of the cylinder (relative to object location)",
             default=(0.0, 0.0, 2.0), update=prop_update_cylinder,
     )
 
-    imported_cyl_loc = FloatVectorProperty(
+    imported_cyl_loc: FloatVectorProperty(
         name="Imported Pov location",
         precision=6,
         default=(0.0, 0.0, 0.0))
 
-    imported_cyl_loc_cap = FloatVectorProperty(
+    imported_cyl_loc_cap: FloatVectorProperty(
         name="Imported Pov location",
         precision=6,
         default=(0.0, 0.0, 2.0))
 
     def prop_update_sphere(self, context):
         bpy.ops.pov.sphere_update()
-    sphere_radius = FloatProperty(name="Sphere radius",min=0.00, max=10.0, default=0.5, update=prop_update_sphere)
+    sphere_radius: FloatProperty(name="Sphere radius",min=0.00, max=10.0, default=0.5, update=prop_update_sphere)
 
 
     def prop_update_cone(self, context):
         bpy.ops.pov.cone_update()
 
-    cone_base_radius = FloatProperty(
+    cone_base_radius: FloatProperty(
         name = "Base radius", description = "The first radius of the cone",
         default = 1.0, min = 0.01, max = 100.0, update=prop_update_cone)
-    cone_cap_radius = FloatProperty(
+    cone_cap_radius: FloatProperty(
         name = "Cap radius", description = "The second radius of the cone",
         default = 0.3, min = 0.0, max = 100.0, update=prop_update_cone)
 
-    cone_segments = IntProperty(
+    cone_segments: IntProperty(
         name = "Segments", description = "Radial segmentation of proxy mesh",
         default = 16, min = 3, max = 265, update=prop_update_cone)
 
-    cone_height = FloatProperty(
+    cone_height: FloatProperty(
         name = "Height", description = "Height of the cone",
         default = 2.0, min = 0.01, max = 100.0, update=prop_update_cone)
 
-    cone_base_z = FloatProperty()
-    cone_cap_z = FloatProperty()
+    cone_base_z: FloatProperty()
+    cone_cap_z: FloatProperty()
 
 ###########Parametric
     def prop_update_parametric(self, context):
         bpy.ops.pov.parametric_update()
 
-    u_min = FloatProperty(name = "U Min",
+    u_min: FloatProperty(name = "U Min",
                     description = "",
                     default = 0.0, update=prop_update_parametric)
-    v_min = FloatProperty(name = "V Min",
+    v_min: FloatProperty(name = "V Min",
                     description = "",
                     default = 0.0, update=prop_update_parametric)
-    u_max = FloatProperty(name = "U Max",
+    u_max: FloatProperty(name = "U Max",
                     description = "",
                     default = 6.28, update=prop_update_parametric)
-    v_max = FloatProperty(name = "V Max",
+    v_max: FloatProperty(name = "V Max",
                     description = "",
                     default = 12.57, update=prop_update_parametric)
-    x_eq = StringProperty(
+    x_eq: StringProperty(
                     maxlen=1024, default = "cos(v)*(1+cos(u))*sin(v/8)", update=prop_update_parametric)
-    y_eq = StringProperty(
+    y_eq: StringProperty(
                     maxlen=1024, default = "sin(u)*sin(v/8)+cos(v/8)*1.5", update=prop_update_parametric)
-    z_eq = StringProperty(
+    z_eq: StringProperty(
                     maxlen=1024, default = "sin(v)*(1+cos(u))*sin(v/8)", update=prop_update_parametric)
 
 ###########Torus
@@ -1914,59 +1914,59 @@ class RenderPovSettingsObject(PropertyGroup):
     def prop_update_torus(self, context):
         bpy.ops.pov.torus_update()
 
-    torus_major_segments = IntProperty(
+    torus_major_segments: IntProperty(
                     name = "Segments", description = "Radial segmentation of proxy mesh",
                     default = 48, min = 3, max = 720, update=prop_update_torus)
-    torus_minor_segments = IntProperty(
+    torus_minor_segments: IntProperty(
                     name = "Segments", description = "Cross-section segmentation of proxy mesh",
                     default = 12, min = 3, max = 720, update=prop_update_torus)
-    torus_major_radius = FloatProperty(
+    torus_major_radius: FloatProperty(
                     name="Major radius",
                     description="Major radius",
                     min=0.00, max=100.00, default=1.0, update=prop_update_torus)
-    torus_minor_radius = FloatProperty(
+    torus_minor_radius: FloatProperty(
                     name="Minor radius",
                     description="Minor radius",
                     min=0.00, max=100.00, default=0.25, update=prop_update_torus)
 
 
 ###########Rainbow
-    arc_angle = FloatProperty(name = "Arc angle",
+    arc_angle: FloatProperty(name = "Arc angle",
                       description = "The angle of the raynbow arc in degrees",
                       default = 360, min = 0.01, max = 360.0)
-    falloff_angle = FloatProperty(name = "Falloff angle",
+    falloff_angle: FloatProperty(name = "Falloff angle",
                       description = "The angle after which rainbow dissolves into background",
                       default = 360, min = 0.0, max = 360)
 
 ###########HeightFields
 
-    quality = IntProperty(name = "Quality",
+    quality: IntProperty(name = "Quality",
                       description = "",
                       default = 100, min = 1, max = 100)
 
-    hf_filename = StringProperty(maxlen = 1024)
+    hf_filename: StringProperty(maxlen = 1024)
 
-    hf_gamma = FloatProperty(
+    hf_gamma: FloatProperty(
             name="Gamma",
             description="Gamma",
             min=0.0001, max=20.0, default=1.0)
 
-    hf_premultiplied = BoolProperty(
+    hf_premultiplied: BoolProperty(
             name="Premultiplied",
             description="Premultiplied",
             default=True)
 
-    hf_smooth = BoolProperty(
+    hf_smooth: BoolProperty(
             name="Smooth",
             description="Smooth",
             default=False)
 
-    hf_water = FloatProperty(
+    hf_water: FloatProperty(
             name="Water Level",
             description="Wather Level",
             min=0.00, max=1.00, default=0.0)
 
-    hf_hierarchy = BoolProperty(
+    hf_hierarchy: BoolProperty(
             name="Hierarchy",
             description="Height field hierarchy",
             default=True)
@@ -1975,33 +1975,33 @@ class RenderPovSettingsObject(PropertyGroup):
     def prop_update_superellipsoid(self, context):
         bpy.ops.pov.superellipsoid_update()
 
-    se_param1 = FloatProperty(
+    se_param1: FloatProperty(
             name="Parameter 1",
             description="",
             min=0.00, max=10.0, default=0.04)
 
-    se_param2 = FloatProperty(
+    se_param2: FloatProperty(
             name="Parameter 2",
             description="",
             min=0.00, max=10.0, default=0.04)
 
-    se_u = IntProperty(name = "U-segments",
+    se_u: IntProperty(name = "U-segments",
                     description = "radial segmentation",
                     default = 20, min = 4, max = 265,
                     update=prop_update_superellipsoid)
-    se_v = IntProperty(name = "V-segments",
+    se_v: IntProperty(name = "V-segments",
                     description = "lateral segmentation",
                     default = 20, min = 4, max = 265,
                     update=prop_update_superellipsoid)
-    se_n1 = FloatProperty(name = "Ring manipulator",
+    se_n1: FloatProperty(name = "Ring manipulator",
                     description = "Manipulates the shape of the Ring",
                     default = 1.0, min = 0.01, max = 100.0,
                     update=prop_update_superellipsoid)
-    se_n2 = FloatProperty(name = "Cross manipulator",
+    se_n2: FloatProperty(name = "Cross manipulator",
                     description = "Manipulates the shape of the cross-section",
                     default = 1.0, min = 0.01, max = 100.0,
                     update=prop_update_superellipsoid)
-    se_edit = EnumProperty(items=[("NOTHING", "Nothing", ""),
+    se_edit: EnumProperty(items=[("NOTHING", "Nothing", ""),
                                 ("NGONS", "N-Gons", ""),
                                 ("TRIANGLES", "Triangles", "")],
                     name="Fill up and down",
@@ -2009,7 +2009,7 @@ class RenderPovSettingsObject(PropertyGroup):
                     default='TRIANGLES',
                     update=prop_update_superellipsoid)
 #############Used for loft and Superellipsoid, etc.
-    curveshape = EnumProperty(
+    curveshape: EnumProperty(
             name="Povray Shape Type",
             items=(("birail", "Birail", ""),
                    ("cairo", "Cairo", ""),
@@ -2024,117 +2024,117 @@ class RenderPovSettingsObject(PropertyGroup):
     def prop_update_supertorus(self, context):
         bpy.ops.pov.supertorus_update()
 
-    st_major_radius = FloatProperty(
+    st_major_radius: FloatProperty(
             name="Major radius",
             description="Major radius",
             min=0.00, max=100.00, default=1.0,
             update=prop_update_supertorus)
 
-    st_minor_radius = FloatProperty(
+    st_minor_radius: FloatProperty(
             name="Minor radius",
             description="Minor radius",
             min=0.00, max=100.00, default=0.25,
             update=prop_update_supertorus)
 
-    st_ring = FloatProperty(
+    st_ring: FloatProperty(
             name="Ring",
             description="Ring manipulator",
             min=0.0001, max=100.00, default=1.00,
             update=prop_update_supertorus)
 
-    st_cross = FloatProperty(
+    st_cross: FloatProperty(
             name="Cross",
             description="Cross manipulator",
             min=0.0001, max=100.00, default=1.00,
             update=prop_update_supertorus)
 
-    st_accuracy = FloatProperty(
+    st_accuracy: FloatProperty(
             name="Accuracy",
             description="Supertorus accuracy",
             min=0.00001, max=1.00, default=0.001)
 
-    st_max_gradient = FloatProperty(
+    st_max_gradient: FloatProperty(
             name="Gradient",
             description="Max gradient",
             min=0.0001, max=100.00, default=10.00,
             update=prop_update_supertorus)
 
-    st_R = FloatProperty(name = "big radius",
+    st_R: FloatProperty(name = "big radius",
                       description = "The radius inside the tube",
                       default = 1.0, min = 0.01, max = 100.0,
                       update=prop_update_supertorus)
-    st_r = FloatProperty(name = "small radius",
+    st_r: FloatProperty(name = "small radius",
                       description = "The radius of the tube",
                       default = 0.3, min = 0.01, max = 100.0,
                       update=prop_update_supertorus)
-    st_u = IntProperty(name = "U-segments",
+    st_u: IntProperty(name = "U-segments",
                     description = "radial segmentation",
                     default = 16, min = 3, max = 265,
                     update=prop_update_supertorus)
-    st_v = IntProperty(name = "V-segments",
+    st_v: IntProperty(name = "V-segments",
                     description = "lateral segmentation",
                     default = 8, min = 3, max = 265,
                     update=prop_update_supertorus)
-    st_n1 = FloatProperty(name = "Ring manipulator",
+    st_n1: FloatProperty(name = "Ring manipulator",
                       description = "Manipulates the shape of the Ring",
                       default = 1.0, min = 0.01, max = 100.0,
                       update=prop_update_supertorus)
-    st_n2 = FloatProperty(name = "Cross manipulator",
+    st_n2: FloatProperty(name = "Cross manipulator",
                       description = "Manipulates the shape of the cross-section",
                       default = 1.0, min = 0.01, max = 100.0,
                       update=prop_update_supertorus)
-    st_ie = BoolProperty(name = "Use Int.+Ext. radii",
+    st_ie: BoolProperty(name = "Use Int.+Ext. radii",
                       description = "Use internal and external radii",
                       default = False,
                       update=prop_update_supertorus)
-    st_edit = BoolProperty(name="",
+    st_edit: BoolProperty(name="",
                         description="",
                         default=False,
                         options={'HIDDEN'},
                         update=prop_update_supertorus)
 
 ########################Loft
-    loft_n = IntProperty(name = "Segments",
+    loft_n: IntProperty(name = "Segments",
                     description = "Vertical segments",
                     default = 16, min = 3, max = 720)
-    loft_rings_bottom = IntProperty(name = "Bottom",
+    loft_rings_bottom: IntProperty(name = "Bottom",
                     description = "Bottom rings",
                     default = 5, min = 2, max = 100)
-    loft_rings_side = IntProperty(name = "Side",
+    loft_rings_side: IntProperty(name = "Side",
                     description = "Side rings",
                     default = 10, min = 2, max = 100)
-    loft_thick = FloatProperty(name = "Thickness",
+    loft_thick: FloatProperty(name = "Thickness",
                       description = "Manipulates the shape of the Ring",
                       default = 0.3, min = 0.01, max = 1.0)
-    loft_r = FloatProperty(name = "Radius",
+    loft_r: FloatProperty(name = "Radius",
                       description = "Radius",
                       default = 1, min = 0.01, max = 10)
-    loft_height = FloatProperty(name = "Height",
+    loft_height: FloatProperty(name = "Height",
                       description = "Manipulates the shape of the Ring",
                       default = 2, min = 0.01, max = 10.0)
 
 ###################Prism
-    prism_n = IntProperty(name = "Sides",
+    prism_n: IntProperty(name = "Sides",
                     description = "Number of sides",
                     default = 5, min = 3, max = 720)
-    prism_r = FloatProperty(name = "Radius",
+    prism_r: FloatProperty(name = "Radius",
                     description = "Radius",
                     default = 1.0)
 
 ##################Isosurface
-    iso_function_text = StringProperty(name="Function Text",maxlen=1024)#,update=iso_props_update_callback)
+    iso_function_text: StringProperty(name="Function Text",maxlen=1024)#,update=iso_props_update_callback)
 
 ##################PolygonToCircle
-    polytocircle_resolution = IntProperty(name = "Resolution",
+    polytocircle_resolution: IntProperty(name = "Resolution",
                     description = "",
                     default = 3, min = 0, max = 256)
-    polytocircle_ngon = IntProperty(name = "NGon",
+    polytocircle_ngon: IntProperty(name = "NGon",
                     description = "",
                     min = 3, max = 64,default = 5)
-    polytocircle_ngonR = FloatProperty(name = "NGon Radius",
+    polytocircle_ngonR: FloatProperty(name = "NGon Radius",
                     description = "",
                     default = 0.3)
-    polytocircle_circleR = FloatProperty(name = "Circle Radius",
+    polytocircle_circleR: FloatProperty(name = "Circle Radius",
                     description = "",
                     default = 1.0)
 
@@ -2143,7 +2143,7 @@ class RenderPovSettingsObject(PropertyGroup):
 # Modifiers POV properties.
 ###############################################################################
 #class RenderPovSettingsModifier(PropertyGroup):
-    boolean_mod = EnumProperty(
+    boolean_mod: EnumProperty(
             name="Operation",
             description="Choose the type of calculation for Boolean modifier",
             items=(("BMESH", "Use the BMesh Boolean Solver", ""),
@@ -2164,12 +2164,12 @@ class RenderPovSettingsObject(PropertyGroup):
 ###############################################################################
 class RenderPovSettingsCamera(PropertyGroup):
     #DOF Toggle
-    dof_enable = BoolProperty(
+    dof_enable: BoolProperty(
             name="Depth Of Field", description="EnablePOV-Ray Depth Of Field ",
             default=False)
 
     # Aperture (Intensity of the Blur)
-    dof_aperture = FloatProperty(
+    dof_aperture: FloatProperty(
             name="Aperture",
             description="Similar to a real camera's aperture effect over focal blur (though not "
                         "in physical units and independent of focal length). "
@@ -2177,30 +2177,30 @@ class RenderPovSettingsCamera(PropertyGroup):
             min=0.01, max=1.00, default=0.50)
 
     # Aperture adaptive sampling
-    dof_samples_min = IntProperty(
+    dof_samples_min: IntProperty(
             name="Samples Min", description="Minimum number of rays to use for each pixel",
             min=1, max=128, default=3)
 
-    dof_samples_max = IntProperty(
+    dof_samples_max: IntProperty(
             name="Samples Max", description="Maximum number of rays to use for each pixel",
             min=1, max=128, default=9)
 
-    dof_variance = IntProperty(
+    dof_variance: IntProperty(
             name="Variance",
             description="Minimum threshold (fractional value) for adaptive DOF sampling (up "
                         "increases quality and render time). The value for the variance should "
                         "be in the range of the smallest displayable color difference",
             min=1, max=100000, soft_max=10000, default=8192)
 
-    dof_confidence = FloatProperty(
+    dof_confidence: FloatProperty(
             name="Confidence",
             description="Probability to reach the real color value. Larger confidence values "
                         "will lead to more samples, slower traces and better images",
             min=0.01, max=0.99, default=0.20)
 
-    normal_enable = BoolProperty(name="Perturbated Camera", default=False)
-    cam_normal = FloatProperty(name="Normal Strength", min=0.0, max=1.0, default=0.0)
-    normal_patterns = EnumProperty(
+    normal_enable: BoolProperty(name="Perturbated Camera", default=False)
+    cam_normal: FloatProperty(name="Normal Strength", min=0.0, max=1.0, default=0.0)
+    normal_patterns: EnumProperty(
             name="Pattern",
             description="",
             items=(('agate', "Agate", ""), ('boxed', "Boxed", ""), ('bumps', "Bumps", ""), ('cells', "Cells", ""),
@@ -2213,12 +2213,12 @@ class RenderPovSettingsCamera(PropertyGroup):
                    ('square', "Square", ""),('tiling', "Tiling", ""),
                    ('waves', "Waves", ""), ('wood', "Wood", ""),('wrinkles', "Wrinkles", "")),
             default='agate')
-    turbulence = FloatProperty(name="Turbulence", min=0.0, max=100.0, default=0.1)
-    scale = FloatProperty(name="Scale", min=0.0,default=1.0)
+    turbulence: FloatProperty(name="Turbulence", min=0.0, max=100.0, default=0.1)
+    scale: FloatProperty(name="Scale", min=0.0,default=1.0)
 
     ##################################CustomPOV Code############################
     # Only DUMMIES below for now:
-    replacement_text = StringProperty(
+    replacement_text: StringProperty(
             name="Texts in blend file",
             description="Type the declared name in custom POV code or an external .inc "
                         "it points at. camera {} expected",
@@ -2230,7 +2230,7 @@ class RenderPovSettingsCamera(PropertyGroup):
 # Text POV properties.
 ###############################################################################
 class RenderPovSettingsText(PropertyGroup):
-    custom_code = EnumProperty(
+    custom_code: EnumProperty(
             name="Custom Code",
             description="rendered source: Both adds text at the "
                         "top of the exported POV-Ray file",
@@ -2245,7 +2245,7 @@ class RenderPovSettingsText(PropertyGroup):
 class PovrayPreferences(AddonPreferences):
     bl_idname = __name__
 
-    branch_feature_set_povray = EnumProperty(
+    branch_feature_set_povray: EnumProperty(
                 name="Feature Set",
                 description="Choose between official (POV-Ray) or (UberPOV) "
                             "development branch features to write in the pov file",
@@ -2254,12 +2254,12 @@ class PovrayPreferences(AddonPreferences):
                 default='povray'
                 )
 
-    filepath_povray = StringProperty(
+    filepath_povray: StringProperty(
                 name="Binary Location",
                 description="Path to renderer executable",
                 subtype='FILE_PATH',
                 )
-    docpath_povray = StringProperty(
+    docpath_povray: StringProperty(
                 name="Includes Location",
                 description="Path to Insert Menu files",
                 subtype='FILE_PATH',
diff --git a/render_povray/nodes.py b/render_povray/nodes.py
index a8281c8a..17ff2285 100644
--- a/render_povray/nodes.py
+++ b/render_povray/nodes.py
@@ -286,7 +286,7 @@ class PovrayMappingNode(Node, ObjectNodeTree):
     bl_label = 'Mapping'
     bl_icon = 'SOUND'
 
-    warp_type = EnumProperty(
+    warp_type: EnumProperty(
             name="Warp Types",
             description="Select the type of warp",
             items=( ('cubic', "Cubic", ""),  ('cylindrical', "Cylindrical", ""),('planar', "Planar", ""),
@@ -295,18 +295,18 @@ class PovrayMappingNode(Node, ObjectNodeTree):
                     ('NONE', "None", "No indentation")),
             default='NONE')
 
-    warp_orientation = EnumProperty(
+    warp_orientation: EnumProperty(
             name="Warp Orientation",
             description="Select the orientation of warp",
             items=(('x', "X", ""), ('y', "Y", ""), ('z', "Z", "")),
             default='y')
 
-    warp_dist_exp = FloatProperty(
+    warp_dist_exp: FloatProperty(
             name="Distance exponent",
             description="Distance exponent",
             min=0.0, max=100.0, default=1.0)
 
-    warp_tor_major_radius = FloatProperty(
+    warp_tor_major_radius: FloatProperty(
             name="Major radius",
             description="Torus is distance from major radius",
             min=0.0, max=5.0, default=1.0)
@@ -472,7 +472,7 @@ class PovrayColorImageNode(Node, ObjectNodeTree):
     bl_idname = 'PovrayColorImageNode'
     bl_label = 'Image map'
 
-    map_type = bpy.props.EnumProperty(
+    map_type: bpy.props.EnumProperty(
             name="Map type",
             description="",
             items=( ('uv_mapping', "UV", ""),
@@ -481,8 +481,8 @@ class PovrayColorImageNode(Node, ObjectNodeTree):
                     ('2', "Cylindrical", "Cylindrical mapping"),
                     ('5', "Torroidal", "Torus or donut shaped mapping")),
             default='0')
-    image = StringProperty(maxlen=1024) # , subtype="FILE_PATH"
-    interpolate = EnumProperty(
+    image: StringProperty(maxlen=1024) # , subtype="FILE_PATH"
+    interpolate: EnumProperty(
             name="Interpolate",
             description="Adding the interpolate keyword can smooth the jagged look of a bitmap",
             items=(
@@ -490,8 +490,8 @@ class PovrayColorImageNode(Node, ObjectNodeTree):
                 ('4', "Normalized", "Gives normalized distance"),
             ),
             default='2')
-    premultiplied = BoolProperty(default=False)
-    once = BoolProperty(description="Not to repeat", default=False)
+    premultiplied: BoolProperty(default=False)
+    once: BoolProperty(description="Not to repeat", default=False)
 
     def init(self, context):
 
@@ -629,7 +629,7 @@ class PovrayImagePatternNode(Node, ObjectNodeTree):
     bl_label = 'Image pattern'
     bl_icon = 'SOUND'
 
-    map_type = bpy.props.EnumProperty(
+    map_type: bpy.props.EnumProperty(
             name="Map type",
             description="",
             items=(
@@ -640,8 +640,8 @@ class PovrayImagePatternNode(Node, ObjectNodeTree):
                 ('5', "Torroidal", "Torus or donut shaped mapping"),
             ),
             default='0')
-    image = StringProperty(maxlen=1024) # , subtype="FILE_PATH"
-    interpolate = EnumProperty(
+    image: StringProperty(maxlen=1024) # , subtype="FILE_PATH"
+    interpolate: EnumProperty(
             name="Interpolate",
             description="Adding the interpolate keyword can smooth the jagged look of a bitmap",
             items=(
@@ -649,9 +649,9 @@ class PovrayImagePatternNode(Node, ObjectNodeTree):
                 ('4', "Normalized", "Gives normalized distance"),
             ),
             default='2')
-    premultiplied = BoolProperty(default=False)
-    once = BoolProperty(description="Not to repeat", default=False)
-    use_alpha = BoolProperty(default=True)
+    premultiplied: BoolProperty(default=False)
+    once: BoolProperty(description="Not to repeat", default=False)
+    use_alpha: BoolProperty(default=True)
     def init(self, context):
 
         gamma=self.inputs.new('PovraySocketFloat_000001_10', "Gamma")
@@ -795,22 +795,22 @@ class ShaderTextureMapNode(Node, ObjectNodeTree):
     bl_idname = 'ShaderTextureMapNode'
     bl_label = 'Texture map'
 
-    brick_size_x = FloatProperty(
+    brick_size_x: FloatProperty(
             name="X",
             description="",
             min=0.0000, max=1.0000, default=0.2500)
 
-    brick_size_y = FloatProperty(
+    brick_size_y: FloatProperty(
             name="Y",
             description="",
             min=0.0000, max=1.0000, default=0.0525)
 
-    brick_size_z = FloatProperty(
+    brick_size_z: FloatProperty(
             name="Z",
             description="",
             min=0.0000, max=1.0000, default=0.1250)
 
-    brick_mortar = FloatProperty(
+    brick_mortar: FloatProperty(
             name="Mortar",
             description="Mortar",
             min=0.000, max=1.500, default=0.01)
@@ -1164,7 +1164,7 @@ class NODE_OT_povray_image_open(bpy.types.Operator):
     bl_idname = "pov.imageopen"
     bl_label = "Open"
 
-    filepath = StringProperty(
+    filepath: StringProperty(
             name="File Path",
             description="Open image",
             maxlen=1024,
diff --git a/render_povray/primitives.py b/render_povray/primitives.py
index 1ae43c1a..8eb17a36 100644
--- a/render_povray/primitives.py
+++ b/render_povray/primitives.py
@@ -216,29 +216,29 @@ class POVRAY_OT_superellipsoid_add(bpy.types.Operator):
 
     # XXX Keep it in sync with __init__'s RenderPovSettingsConePrimitive
     #     If someone knows how to define operators' props from a func, I'd be delighted to learn it!
-    se_param1 = FloatProperty(
+    se_param1: FloatProperty(
             name="Parameter 1",
             description="",
             min=0.00, max=10.0, default=0.04)
 
-    se_param2 = FloatProperty(
+    se_param2: FloatProperty(
             name="Parameter 2",
             description="",
             min=0.00, max=10.0, default=0.04)
 
-    se_u = IntProperty(name = "U-segments",
+    se_u: IntProperty(name = "U-segments",
                     description = "radial segmentation",
                     default = 20, min = 4, max = 265)
-    se_v = IntProperty(name = "V-segments",
+    se_v: IntProperty(name = "V-segments",
                     description = "lateral segmentation",
                     default = 20, min = 4, max = 265)
-    se_n1 = FloatProperty(name = "Ring manipulator",
+    se_n1: FloatProperty(name = "Ring manipulator",
                       description = "Manipulates the shape of the Ring",
                       default = 1.0, min = 0.01, max = 100.0)
-    se_n2 = FloatProperty(name = "Cross manipulator",
+    se_n2: FloatProperty(name = "Cross manipulator",
                       description = "Manipulates the shape of the cross-section",
                       default = 1.0, min = 0.01, max = 100.0)
-    se_edit = EnumProperty(items=[("NOTHING", "Nothing", ""),
+    se_edit: EnumProperty(items=[("NOTHING", "Nothing", ""),
                                 ("NGONS", "N-Gons", ""),
                                 ("TRIANGLES", "Triangles", "")],
                         name="Fill up and down",
@@ -414,28 +414,28 @@ class POVRAY_OT_supertorus_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
     COMPAT_ENGINES = {'POVRAY_RENDER'}
 
-    st_R = FloatProperty(name = "big radius",
+    st_R: FloatProperty(name = "big radius",
                       description = "The radius inside the tube",
                       default = 1.0, min = 0.01, max = 100.0)
-    st_r = FloatProperty(name = "small radius",
+    st_r: FloatProperty(name = "small radius",
                       description = "The radius of the tube",
                       default = 0.3, min = 0.01, max = 100.0)
-    st_u = IntProperty(name = "U-segments",
+    st_u: IntProperty(name = "U-segments",
                     description = "radial segmentation",
                     default = 16, min = 3, max = 265)
-    st_v = IntProperty(name = "V-segments",
+    st_v: IntProperty(name = "V-segments",
                     description = "lateral segmentation",
                     default = 8, min = 3, max = 265)
-    st_n1 = FloatProperty(name = "Ring manipulator",
+    st_n1: FloatProperty(name = "Ring manipulator",
                       description = "Manipulates the shape of the Ring",
                       default = 1.0, min = 0.01, max = 100.0)
-    st_n2 = FloatProperty(name = "Cross manipulator",
+    st_n2: FloatProperty(name = "Cross manipulator",
                       description = "Manipulates the shape of the cross-section",
                       default = 1.0, min = 0.01, max = 100.0)
-    st_ie = BoolProperty(name = "Use Int.+Ext. radii",
+    st_ie: BoolProperty(name = "Use Int.+Ext. radii",
                       description = "Use internal and external radii",
                       default = False)
-    st_edit = BoolProperty(name="",
+    st_edit: BoolProperty(name="",
                         description="",
                         default=False,
                         options={'HIDDEN'})
@@ -482,22 +482,22 @@ class POVRAY_OT_loft_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
     COMPAT_ENGINES = {'POVRAY_RENDER'}
 
-    loft_n = IntProperty(name = "Segments",
+    loft_n: IntProperty(name = "Segments",
                     description = "Vertical segments",
                     default = 16, min = 3, max = 720)
-    loft_rings_bottom = IntProperty(name = "Bottom",
+    loft_rings_bottom: IntProperty(name = "Bottom",
                     description = "Bottom rings",
                     default = 5, min = 2, max = 100)
-    loft_rings_side = IntProperty(name = "Side",
+    loft_rings_side: IntProperty(name = "Side",
                     description = "Side rings",
                     default = 10, min = 2, max = 100)
-    loft_thick = FloatProperty(name = "Thickness",
+    loft_thick: FloatProperty(name = "Thickness",
                       description = "Manipulates the shape of the Ring",
                       default = 0.3, min = 0.01, max = 1.0)
-    loft_r = FloatProperty(name = "Radius",
+    loft_r: FloatProperty(name = "Radius",
                       description = "Radius",
                       default = 1, min = 0.01, max = 10)
-    loft_height = FloatProperty(name = "Height",
+    loft_height: FloatProperty(name = "Height",
                       description = "Manipulates the shape of the Ring",
                       default = 2, min = 0.01, max = 10.0)
 
@@ -672,14 +672,14 @@ class POVRAY_OT_cylinder_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # XXX Keep it in sync with __init__'s cylinder Primitive
-    R = FloatProperty(name="Cylinder radius", min=0.00, max=10.0, default=1.0)
+    R: FloatProperty(name="Cylinder radius", min=0.00, max=10.0, default=1.0)
 
-    imported_cyl_loc = FloatVectorProperty(
+    imported_cyl_loc: FloatVectorProperty(
         name="Imported Pov base location",
         precision=6,
         default=(0.0, 0.0, 0.0))
 
-    imported_cyl_loc_cap = FloatVectorProperty(
+    imported_cyl_loc_cap: FloatVectorProperty(
         name="Imported Pov cap location",
         precision=6,
         default=(0.0, 0.0, 2.0))
@@ -780,9 +780,9 @@ class POVRAY_OT_sphere_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # XXX Keep it in sync with __init__'s torus Primitive
-    R = FloatProperty(name="Sphere radius",min=0.00, max=10.0, default=0.5)
+    R: FloatProperty(name="Sphere radius",min=0.00, max=10.0, default=0.5)
 
-    imported_loc = FloatVectorProperty(
+    imported_loc: FloatVectorProperty(
         name="Imported Pov location",
         precision=6,
         default=(0.0, 0.0, 0.0))
@@ -914,16 +914,16 @@ class POVRAY_OT_cone_add(bpy.types.Operator):
 
     # XXX Keep it in sync with __init__'s RenderPovSettingsConePrimitive
     #     If someone knows how to define operators' props from a func, I'd be delighted to learn it!
-    base = FloatProperty(
+    base: FloatProperty(
         name = "Base radius", description = "The first radius of the cone",
         default = 1.0, min = 0.01, max = 100.0)
-    cap = FloatProperty(
+    cap: FloatProperty(
         name = "Cap radius", description = "The second radius of the cone",
         default = 0.3, min = 0.0, max = 100.0)
-    seg = IntProperty(
+    seg: IntProperty(
         name = "Segments", description = "Radial segmentation of the proxy mesh",
         default = 16, min = 3, max = 265)
-    height = FloatProperty(
+    height: FloatProperty(
         name = "Height", description = "Height of the cone",
         default = 2.0, min = 0.01, max = 100.0)
 
@@ -1091,32 +1091,32 @@ class POVRAY_OT_height_field_add(bpy.types.Operator, ImportHelper):
             # default="*.exr;*.gif;*.hdr;*.iff;*.jpeg;*.jpg;*.pgm;*.png;*.pot;*.ppm;*.sys;*.tga;*.tiff;*.EXR;*.GIF;*.HDR;*.IFF;*.JPEG;*.JPG;*.PGM;*.PNG;*.POT;*.PPM;*.SYS;*.TGA;*.TIFF",
             # options={'HIDDEN'},
             # )
-    quality = IntProperty(name = "Quality",
+    quality: IntProperty(name = "Quality",
                       description = "",
                       default = 100, min = 1, max = 100)
-    hf_filename = StringProperty(maxlen = 1024)
+    hf_filename: StringProperty(maxlen = 1024)
 
-    hf_gamma = FloatProperty(
+    hf_gamma: FloatProperty(
             name="Gamma",
             description="Gamma",
             min=0.0001, max=20.0, default=1.0)
 
-    hf_premultiplied = BoolProperty(
+    hf_premultiplied: BoolProperty(
             name="Premultiplied",
             description="Premultiplied",
             default=True)
 
-    hf_smooth = BoolProperty(
+    hf_smooth: BoolProperty(
             name="Smooth",
             description="Smooth",
             default=False)
 
-    hf_water = FloatProperty(
+    hf_water: FloatProperty(
             name="Water Level",
             description="Wather Level",
             min=0.00, max=1.00, default=0.0)
 
-    hf_hierarchy = BoolProperty(
+    hf_hierarchy: BoolProperty(
             name="Hierarchy",
             description="Height field hierarchy",
             default=True)
@@ -1209,16 +1209,16 @@ class POVRAY_OT_torus_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # XXX Keep it in sync with __init__'s torus Primitive
-    mas = IntProperty(name = "Major Segments",
+    mas: IntProperty(name = "Major Segments",
                     description = "",
                     default = 48, min = 3, max = 720)
-    mis = IntProperty(name = "Minor Segments",
+    mis: IntProperty(name = "Minor Segments",
                     description = "",
                     default = 12, min = 3, max = 720)
-    mar = FloatProperty(name = "Major Radius",
+    mar: FloatProperty(name = "Major Radius",
                     description = "",
                     default = 1.0)
-    mir = FloatProperty(name = "Minor Radius",
+    mir: FloatProperty(name = "Minor Radius",
                     description = "",
                     default = 0.25)
     def execute(self,context):
@@ -1261,10 +1261,10 @@ class POVRAY_OT_prism_add(bpy.types.Operator):
     bl_description = "Create Prism"
     bl_options = {'REGISTER', 'UNDO'}
 
-    prism_n = IntProperty(name = "Sides",
+    prism_n: IntProperty(name = "Sides",
                 description = "Number of sides",
                 default = 5, min = 3, max = 720)
-    prism_r = FloatProperty(name = "Radius",
+    prism_r: FloatProperty(name = "Radius",
                     description = "Radius",
                     default = 1.0)
     def execute(self,context):
@@ -1368,23 +1368,23 @@ class POVRAY_OT_parametric_add(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # XXX Keep it in sync with __init__'s Parametric primitive
-    u_min = FloatProperty(name = "U Min",
+    u_min: FloatProperty(name = "U Min",
                     description = "",
                     default = 0.0)
-    v_min = FloatProperty(name = "V Min",
+    v_min: FloatProperty(name = "V Min",
                     description = "",
                     default = 0.0)
-    u_max = FloatProperty(name = "U Max",
+    u_max: FloatProperty(name = "U Max",
                     description = "",
                     default = 6.28)
-    v_max = FloatProperty(name = "V Max",
+    v_max: FloatProperty(name = "V Max",
                     description = "",
                     default = 12.57)
-    x_eq = StringProperty(
+    x_eq: StringProperty(
                     maxlen=1024, default = "cos(v)*(1+cos(u))*sin(v/8)")
-    y_eq = StringProperty(
+    y_eq: StringProperty(
                     maxlen=1024, default = "sin(u)*sin(v/8)+cos(v/8)*1.5")
-    z_eq = StringProperty(
+    z_eq: StringProperty(
                     maxlen=1024, default = "sin(v)*(1+cos(u))*sin(v/8)")
 
     def execute(self,context):
@@ -1429,16 +1429,16 @@ class POVRAY_OT_shape_polygon_to_circle_add(bpy.types.Operator):
     COMPAT_ENGINES = {'POVRAY_RENDER'}
 
     # XXX Keep it in sync with __init__'s polytocircle properties
-    polytocircle_resolution = IntProperty(name = "Resolution",
+    polytocircle_resolution: IntProperty(name = "Resolution",
                     description = "",
                     default = 3, min = 0, max = 256)
-    polytocircle_ngon = IntProperty(name = "NGon",
+    polytocircle_ngon: IntProperty(name = "NGon",
                     description = "",
                     min = 3, max = 64,default = 5)
-    polytocircle_ngonR = FloatProperty(name = "NGon Radius",
+    polytocircle_ngonR: FloatProperty(name = "NGon Radius",
                     description = "",
                     default = 0.3)
-    polytocircle_circleR = FloatProperty(name = "Circle Radius",
+    polytocircle_circleR: FloatProperty(name = "Circle Radius",
                     description = "",
                     default = 1.0)
     def execute(self,context):
@@ -1487,16 +1487,16 @@ class ImportPOV(bpy.types.Operator, ImportHelper):
 
     # -----------
     # File props.
-    files = CollectionProperty(type=bpy.types.OperatorFileListElement, options={'HIDDEN', 'SKIP_SAVE'})
-    directory = StringProperty(maxlen=1024, subtype='FILE_PATH', options={'HIDDEN', 'SKIP_SAVE'})
+    files: CollectionProperty(type=bpy.types.OperatorFileListElement, options={'HIDDEN', 'SKIP_SAVE'})
+    directory: StringProperty(maxlen=1024, subtype='FILE_PATH', options={'HIDDEN', 'SKIP_SAVE'})
 
     filename_ext = {".pov",".inc"}
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
             default="*.pov;*.inc",
             options={'HIDDEN'},
             )
 
-    import_at_cur = BoolProperty(name="Import at Cursor Location",
+    import_at_cur: BoolProperty(name="Import at Cursor Location",
                                     description = "Ignore Object Matrix",
                                     default=False)
 
diff --git a/sequencer_kinoraw_tools/__init__.py b/sequencer_kinoraw_tools/__init__.py
index fe2946f9..c4af8988 100644
--- a/sequencer_kinoraw_tools/__init__.py
+++ b/sequencer_kinoraw_tools/__init__.py
@@ -71,80 +71,80 @@ class KinorawToolsAddon(AddonPreferences):
     bl_option = {'REGISTER'}
 
     # extra_actions
-    kr_show_tools = BoolProperty(
+    kr_show_tools: BoolProperty(
             name="Show tools",
             description="Show extra tools in the panel",
             default=False
             )
-    kr_mini_ui = BoolProperty(
+    kr_mini_ui: BoolProperty(
             name="Mini UI",
             description="Enable mini UI",
             default=True
             )
-    kr_show_info = BoolProperty(
+    kr_show_info: BoolProperty(
             name="Show info",
             description="Show basic info from selected strip",
             default=False
             )
-    kr_show_trim = BoolProperty(
+    kr_show_trim: BoolProperty(
             name="Show trim",
             default=False
             )
-    kr_show_modifiers = BoolProperty(
+    kr_show_modifiers: BoolProperty(
             name="Show modifiers",
             description="Show modifiers from selected strip",
             default=False
             )
-    kr_extra_info = BoolProperty(
+    kr_extra_info: BoolProperty(
             name="Show extra info",
             description="Show extra info and settings from selected strip",
             default=False
             )
     # exif
-    use_exif_panel = BoolProperty(
+    use_exif_panel: BoolProperty(
             name="Exif info Panel | depends on external programs, see Documentation",
             default=False
             )
     # glitch
-    use_glitch_panel = BoolProperty(
+    use_glitch_panel: BoolProperty(
             name="Glitch panel | depends on external programs, see Documentation",
             default=False
             )
-    all_keyframes = BoolProperty(
+    all_keyframes: BoolProperty(
             name="Remove all keyframes",
             default=True
             )
-    load_glitch = BoolProperty(
+    load_glitch: BoolProperty(
             name="Load glitch after conversion > UNSTABLE!!!",
             default=True
             )
     # jump to cut
-    use_jumptocut = BoolProperty(
+    use_jumptocut: BoolProperty(
             name="Jump to Cut Panel",
             default=True
             )
-    use_io_tools = BoolProperty(
+    use_io_tools: BoolProperty(
             name="Enable in and out tools in Jump to Cut Panel",
             default=False
             )
     # Proxy Tools
-    use_proxy_tools = BoolProperty(
+    use_proxy_tools: BoolProperty(
             name="Proxy tools Panel | depends on external programs, see Documentation",
             default=False
             )
-    proxy_dir = StringProperty(
+    proxy_dir: StringProperty(
             name="Proxy Custom Directory",
             default="//proxies/"
             )
-    proxy_scripts_path = StringProperty(
+    proxy_scripts_path: StringProperty(
             name="Directory to store proxy scripts",
             default="//proxy_scripts/"
             )
-    proxy_scripts = BoolProperty(
+    proxy_scripts: BoolProperty(
             name="Generate ffmpeg scripts",
             default=False
             )
-    ffmpeg_command = StringProperty(
+    ffmpeg_command: StringProperty(
             name="Command to generate proxy",
             default='''ffmpeg -i {} -vcodec mjpeg -q:v 10 -s {}x{} -an -y {}'''
             )
diff --git a/sequencer_kinoraw_tools/datamosh.py b/sequencer_kinoraw_tools/datamosh.py
index 81f679bd..f64adbed 100644
--- a/sequencer_kinoraw_tools/datamosh.py
+++ b/sequencer_kinoraw_tools/datamosh.py
@@ -65,7 +65,7 @@ class CreateAvi(Operator):
     bl_description = "Create an avi output file"
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = IntProperty(
+    size: IntProperty(
             name="proxysize",
             default=1
             )
diff --git a/sequencer_kinoraw_tools/jumptocut.py b/sequencer_kinoraw_tools/jumptocut.py
index 92566d9d..7cbf64c9 100644
--- a/sequencer_kinoraw_tools/jumptocut.py
+++ b/sequencer_kinoraw_tools/jumptocut.py
@@ -520,7 +520,7 @@ class OBJECT_OT_Extrasnap(Operator):  # Operator paste source in/out
     bl_options = {'REGISTER', 'UNDO'}
 
     # align: 0 = left snap, 1 = center snap, 2= right snap
-    align = IntProperty(
+    align: IntProperty(
             name="Align",
             min=0, max=2,
             default=1
@@ -556,7 +556,7 @@ class OBJECT_OT_Extrahandles(Operator):  # Operator paste source in/out
     bl_options = {'REGISTER', 'UNDO'}
 
     # side: 0 = left , 1 = both, 2= right
-    side = IntProperty(
+    side: IntProperty(
             name="Side",
             min=0, max=2,
             default=1
diff --git a/sequencer_kinoraw_tools/operators_extra_actions.py b/sequencer_kinoraw_tools/operators_extra_actions.py
index 055bd143..8a060acb 100644
--- a/sequencer_kinoraw_tools/operators_extra_actions.py
+++ b/sequencer_kinoraw_tools/operators_extra_actions.py
@@ -35,7 +35,7 @@ class Sequencer_Extra_FrameSkip(Operator):
     bl_description = "Skip through the Timeline by one-second increments"
     bl_options = {'REGISTER', 'UNDO'}
 
-    back = BoolProperty(
+    back: BoolProperty(
             name="Back",
             default=False
             )
@@ -545,7 +545,7 @@ class Sequencer_Extra_Insert(Operator):
                       "forward following ones")
     bl_options = {'REGISTER', 'UNDO'}
 
-    singlechannel = BoolProperty(
+    singlechannel: BoolProperty(
             name="Single Channel",
             default=False
             )
@@ -616,7 +616,7 @@ class Sequencer_Extra_CopyProperties(Operator):
     bl_description = "Copy properties of active strip to selected strips"
     bl_options = {'REGISTER', 'UNDO'}
 
-    prop = EnumProperty(
+    prop: EnumProperty(
             name="Property",
             items=[
                 # common
@@ -788,7 +788,7 @@ class Sequencer_Extra_FadeInOut(Operator):
     bl_description = "Fade volume or opacity of active strip"
     bl_options = {'REGISTER', 'UNDO'}
 
-    mode = EnumProperty(
+    mode: EnumProperty(
             name='Direction',
             items=(
                 ('IN', "Fade In...", ""),
@@ -797,12 +797,12 @@ class Sequencer_Extra_FadeInOut(Operator):
             default='IN',
             )
 
-    fade_duration = IntProperty(
+    fade_duration: IntProperty(
         name='Duration',
         description='Number of frames to fade',
         min=1, max=250,
         default=25)
-    fade_amount = FloatProperty(
+    fade_amount: FloatProperty(
         name='Amount',
         description='Maximum value of fade',
         min=0.0,
@@ -946,7 +946,7 @@ class Sequencer_Extra_PlaceFromFileBrowser(Operator):
     bl_description = "Place or insert active file from File Browser"
     bl_options = {'REGISTER', 'UNDO'}
 
-    insert = BoolProperty(
+    insert: BoolProperty(
             name="Insert",
             default=False
             )
@@ -1049,7 +1049,7 @@ class Sequencer_Extra_SelectCurrentFrame(Operator):
     bl_description = "Select strips according to current frame"
     bl_options = {'REGISTER', 'UNDO'}
 
-    mode = EnumProperty(
+    mode: EnumProperty(
             name='Mode',
             items=(
             ('BEFORE', 'Before Current Frame', ''),
@@ -1109,7 +1109,7 @@ class Sequencer_Extra_SelectAllByType(Operator):
     bl_description = "Select all the strips of the same type"
     bl_options = {'REGISTER', 'UNDO'}
 
-    type = EnumProperty(
+    type: EnumProperty(
             name="Strip Type",
             items=(
                 ('ACTIVE', 'Same as Active Strip', ''),
diff --git a/sequencer_kinoraw_tools/proxy_tools.py b/sequencer_kinoraw_tools/proxy_tools.py
index e0863529..10a83344 100644
--- a/sequencer_kinoraw_tools/proxy_tools.py
+++ b/sequencer_kinoraw_tools/proxy_tools.py
@@ -141,7 +141,7 @@ class CreateProxyOperator(Operator):
                       "and setup proxies for selected strip")
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = IntProperty(
+    size: IntProperty(
             name="Proxy Size",
             default=1
             )
@@ -198,7 +198,7 @@ class CreateBIProxyOperator(Operator):
     bl_description = "Use BI system to create a proxy"
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = IntProperty(
+    size: IntProperty(
             name="Proxy Size",
             default=1
             )
diff --git a/sequencer_kinoraw_tools/recursive_loader.py b/sequencer_kinoraw_tools/recursive_loader.py
index fbc708a7..abc51b6d 100644
--- a/sequencer_kinoraw_tools/recursive_loader.py
+++ b/sequencer_kinoraw_tools/recursive_loader.py
@@ -35,17 +35,17 @@ class Sequencer_Extra_RecursiveLoader(Operator):
     bl_label = "Recursive Load"
     bl_options = {'REGISTER', 'UNDO'}
 
-    recursive = BoolProperty(
+    recursive: BoolProperty(
             name="Recursive",
             description="Load in recursive folders",
             default=False
             )
-    recursive_select_by_extension = BoolProperty(
+    recursive_select_by_extension: BoolProperty(
             name="Select by extension",
             description="Load only clips with selected extension",
             default=False
             )
-    ext = EnumProperty(
+    ext: EnumProperty(
             items=functions.movieextdict,
             name="Extension",
             default='3'
diff --git a/space_clip_editor_autotracker.py b/space_clip_editor_autotracker.py
index 962742e3..55f66a57 100644
--- a/space_clip_editor_autotracker.py
+++ b/space_clip_editor_autotracker.py
@@ -539,7 +539,7 @@ class OP_Tracking_auto_tracker(Operator):
 
 class AutotrackerSettings(PropertyGroup):
     """Create properties"""
-    df_margin = FloatProperty(
+    df_margin: FloatProperty(
             name="Detect Features Margin",
             description="Only consider features from pixels located outside\n"
                         "the defined margin from the clip borders",
@@ -548,7 +548,7 @@ class AutotrackerSettings(PropertyGroup):
             min=0,
             max=100
             )
-    df_threshold = FloatProperty(
+    df_threshold: FloatProperty(
             name="Detect Features Threshold",
             description="Threshold level to deem a feature being good enough for tracking",
             default=0.3,
@@ -556,7 +556,7 @@ class AutotrackerSettings(PropertyGroup):
             max=1.0
             )
     # Note: merge this one with delete_threshold
-    df_distance = FloatProperty(
+    df_distance: FloatProperty(
             name="Detect Features Distance",
             description="Minimal acceptable distance between two features",
             subtype='PERCENTAGE',
@@ -564,7 +564,7 @@ class AutotrackerSettings(PropertyGroup):
             min=1,
             max=100
             )
-    delete_threshold = FloatProperty(
+    delete_threshold: FloatProperty(
             name="New Marker Threshold",
             description="Threshold of how close a new features can appear during tracking",
             subtype='PERCENTAGE',
@@ -572,7 +572,7 @@ class AutotrackerSettings(PropertyGroup):
             min=1,
             max=100
             )
-    small_tracks = IntProperty(
+    small_tracks: IntProperty(
             name="Minimum track length",
             description="Delete tracks shorter than this number of frames\n"
                         "Note: set to 0 for keeping all tracks",
@@ -580,14 +580,14 @@ class AutotrackerSettings(PropertyGroup):
             min=1,
             max=1000
             )
-    frame_separation = IntProperty(
+    frame_separation: IntProperty(
             name="Frame Separation",
             description="How often new features are generated",
             default=5,
             min=1,
             max=100
             )
-    jump_cut = FloatProperty(
+    jump_cut: FloatProperty(
             name="Jump Cut",
             description="How much distance a marker can travel before it is considered "
                         "to be a bad track and cut.\nA new track will be added "
@@ -596,7 +596,7 @@ class AutotrackerSettings(PropertyGroup):
             min=0.0,
             max=50.0
             )
-    track_backwards = BoolProperty(
+    track_backwards: BoolProperty(
             name="AutoTrack Backwards",
             description="Track from the last frame of the selected clip",
             default=False
@@ -607,7 +607,7 @@ class AutotrackerSettings(PropertyGroup):
             ("INSIDE_GPENCIL", "Inside Grease Pencil", "", 2),
             ("OUTSIDE_GPENCIL", "Outside Grease Pencil", "", 3),
             ]
-    placement_list = EnumProperty(
+    placement_list: EnumProperty(
             name="Placement",
             description="Feature Placement",
             items=list_items
diff --git a/space_view3d_3d_navigation.py b/space_view3d_3d_navigation.py
index b1a85c82..5705db9d 100644
--- a/space_view3d_3d_navigation.py
+++ b/space_view3d_3d_navigation.py
@@ -94,7 +94,7 @@ class PanUpViewsAll(Operator):
     bl_label = "Pan View"
     bl_description = "Pan the 3D View"
 
-    panning = StringProperty(
+    panning: StringProperty(
             default="PANUP",
             options={"HIDDEN"}
             )
@@ -339,7 +339,7 @@ class NavAddonPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Display",
diff --git a/space_view3d_brush_menus/__init__.py b/space_view3d_brush_menus/__init__.py
index 3371505e..891a22de 100644
--- a/space_view3d_brush_menus/__init__.py
+++ b/space_view3d_brush_menus/__init__.py
@@ -64,7 +64,7 @@ from bpy.props import (
 class VIEW3D_MT_Brushes_Pref(AddonPreferences):
     bl_idname = __name__
 
-    use_brushes_menu_type = EnumProperty(
+    use_brushes_menu_type: EnumProperty(
         name="Choose Brushes Selection",
         description="",
         items=[('lists', "Use compact Menus",
@@ -78,7 +78,7 @@ class VIEW3D_MT_Brushes_Pref(AddonPreferences):
             ],
         default='lists'
         )
-    column_set = IntProperty(
+    column_set: IntProperty(
         name="Number of Columns",
         description="Number of columns used for the brushes menu",
         default=2,
diff --git a/space_view3d_brush_menus/brush_menu.py b/space_view3d_brush_menus/brush_menu.py
index 53df3b81..f8c46ba7 100644
--- a/space_view3d_brush_menus/brush_menu.py
+++ b/space_view3d_brush_menus/brush_menu.py
@@ -496,7 +496,7 @@ class FlipColorsAll(Operator):
     bl_idname = "view3d.sv3_flip_colors_all"
     bl_description = "Switch between Foreground and Background colors"
 
-    is_tex = BoolProperty(
+    is_tex: BoolProperty(
                 default=False,
                 options={'HIDDEN'}
                 )
diff --git a/space_view3d_display_tools/__init__.py b/space_view3d_display_tools/__init__.py
index 343f9d64..693fca44 100644
--- a/space_view3d_display_tools/__init__.py
+++ b/space_view3d_display_tools/__init__.py
@@ -467,11 +467,11 @@ class DisplayToolsPanel(Panel):
 # define scene props
 class display_tools_scene_props(PropertyGroup):
     # Init delay variables
-    Delay = BoolProperty(
+    Delay: BoolProperty(
             default=False,
             description="Activate delay return to normal viewport mode"
             )
-    DelayTime = IntProperty(
+    DelayTime: IntProperty(
             default=30,
             min=0,
             max=500,
@@ -480,7 +480,7 @@ class display_tools_scene_props(PropertyGroup):
             description="Delay time to return to normal viewport"
                         "mode after move your mouse cursor"
             )
-    DelayTimeGlobal = IntProperty(
+    DelayTimeGlobal: IntProperty(
             default=30,
             min=1,
             max=500,
@@ -490,40 +490,40 @@ class display_tools_scene_props(PropertyGroup):
                         "mode after move your mouse cursor"
             )
     # Init variable for fast navigate
-    EditActive = BoolProperty(
+    EditActive: BoolProperty(
             default=True,
             description="Activate for fast navigate in edit mode too"
             )
     # Init properties for scene
-    FastNavigateStop = BoolProperty(
+    FastNavigateStop: BoolProperty(
             name="Fast Navigate Stop",
             description="Stop fast navigate mode",
             default=False
             )
-    OriginalMode = EnumProperty(
+    OriginalMode: EnumProperty(
             items=[('TEXTURED', 'Texture', 'Texture display mode'),
                    ('SOLID', 'Solid', 'Solid display mode')],
             name="Normal",
             default='SOLID'
             )
-    BoundingMode = EnumProperty(
+    BoundingMode: EnumProperty(
             items=[('BOX', 'Box', 'Box shape'),
                    ('SPHERE', 'Sphere', 'Sphere shape'),
                    ('CYLINDER', 'Cylinder', 'Cylinder shape'),
                    ('CONE', 'Cone', 'Cone shape')],
             name="BB Mode"
             )
-    FastMode = EnumProperty(
+    FastMode: EnumProperty(
             items=[('WIREFRAME', 'Wireframe', 'Wireframe display'),
                    ('BOUNDBOX', 'Bounding Box', 'Bounding Box display')],
             name="Fast"
             )
-    ShowParticles = BoolProperty(
+    ShowParticles: BoolProperty(
             name="Show Particles",
             description="Show or hide particles on fast navigate mode",
             default=True
             )
-    ParticlesPercentageDisplay = IntProperty(
+    ParticlesPercentageDisplay: IntProperty(
             name="Fast Display",
             description="Display only a percentage of particles when active",
             default=25,
@@ -533,7 +533,7 @@ class display_tools_scene_props(PropertyGroup):
             soft_max=100,
             subtype='FACTOR'
             )
-    InitialParticles = IntProperty(
+    InitialParticles: IntProperty(
             name="Normal Display",
             description="When idle, how much particles are displayed\n"
                         "Overrides the Particles settings",
@@ -543,11 +543,11 @@ class display_tools_scene_props(PropertyGroup):
             soft_min=0,
             soft_max=100
             )
-    Symplify = IntProperty(
+    Symplify: IntProperty(
             name="Integer",
             description="Enter an integer"
             )
-    ScreenStart = IntProperty(
+    ScreenStart: IntProperty(
             name="Left Limit",
             default=0,
             min=0,
@@ -556,7 +556,7 @@ class display_tools_scene_props(PropertyGroup):
             description="Limit the screen active area width from the left side\n"
                         "Changed values will take effect on the next run",
             )
-    ScreenEnd = IntProperty(
+    ScreenEnd: IntProperty(
             name="Right Limit",
             default=0,
             min=0,
@@ -572,10 +572,10 @@ class display_tools_scene_props(PropertyGroup):
             default=(False,) * 6,
             size=6,
             )
-    WT_handler_enable = BoolProperty(
+    WT_handler_enable: BoolProperty(
             default=False
             )
-    WT_handler_previous_object = StringProperty(
+    WT_handler_previous_object: StringProperty(
             default=""
             )
 
@@ -608,7 +608,7 @@ class DisplayToolsPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Display",
diff --git a/space_view3d_display_tools/display.py b/space_view3d_display_tools/display.py
index 6c1c6796..d0ff754d 100644
--- a/space_view3d_display_tools/display.py
+++ b/space_view3d_display_tools/display.py
@@ -63,7 +63,7 @@ class DisplayDrawChange(Operator, BasePollCheck):
     bl_label = "Draw Type"
     bl_description = "Change Display objects' mode"
 
-    drawing = EnumProperty(
+    drawing: EnumProperty(
             items=[('TEXTURED', 'Texture', 'Texture display mode'),
                    ('SOLID', 'Solid', 'Solid display mode'),
                    ('WIRE', 'Wire', 'Wire display mode'),
@@ -99,7 +99,7 @@ class DisplayBoundsSwitch(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Display/Hide Bounding box overlay"
 
-    bounds = BoolProperty(default=False)
+    bounds: BoolProperty(default=False)
 
     def execute(self, context):
         try:
@@ -129,7 +129,7 @@ class DisplayDoubleSidedSwitch(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Turn on/off face double shaded mode"
 
-    double_side = BoolProperty(default=False)
+    double_side: BoolProperty(default=False)
 
     def execute(self, context):
         try:
@@ -156,7 +156,7 @@ class DisplayXRayOn(Operator, BasePollCheck):
     bl_label = "On"
     bl_description = "X-Ray display on/off"
 
-    xrays = BoolProperty(default=False)
+    xrays: BoolProperty(default=False)
 
     def execute(self, context):
         try:
diff --git a/space_view3d_display_tools/fast_navigate.py b/space_view3d_display_tools/fast_navigate.py
index 5d61138a..e3577df5 100644
--- a/space_view3d_display_tools/fast_navigate.py
+++ b/space_view3d_display_tools/fast_navigate.py
@@ -62,8 +62,8 @@ class FastNavigate(Operator):
     bl_description = ("Limit the objects drawing in the 3D view for faster navigation\n"
                       "Runs in modal mode until Stop is pressed or Esc, Return, Space")
 
-    trigger = BoolProperty(default=False)
-    mode = BoolProperty(default=False)
+    trigger: BoolProperty(default=False)
+    mode: BoolProperty(default=False)
     screen_width = [0, 0]
     store_fail = False
     store_init_particles = {}
diff --git a/space_view3d_display_tools/modifier_tools.py b/space_view3d_display_tools/modifier_tools.py
index af2667dc..dbfbcea6 100644
--- a/space_view3d_display_tools/modifier_tools.py
+++ b/space_view3d_display_tools/modifier_tools.py
@@ -91,7 +91,7 @@ class DisplayModifiersRenderSwitch(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Display/Hide modifiers on render"
 
-    mod_render = BoolProperty(default=True)
+    mod_render: BoolProperty(default=True)
 
     def execute(self, context):
         try:
@@ -122,7 +122,7 @@ class DisplayModifiersViewportSwitch(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Display/Hide modifiers in the viewport"
 
-    mod_switch = BoolProperty(default=True)
+    mod_switch: BoolProperty(default=True)
 
     def execute(self, context):
         try:
@@ -149,7 +149,7 @@ class DisplayModifiersEditSwitch(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Display/Hide modifiers during edit mode"
 
-    mod_edit = BoolProperty(default=True)
+    mod_edit: BoolProperty(default=True)
 
     def execute(self, context):
         try:
@@ -175,7 +175,7 @@ class DisplayModifiersCageSet(Operator, BasePollCheck):
     bl_label = "On/Off"
     bl_description = "Display modifiers editing cage during edit mode"
 
-    set_cage = BoolProperty(default=True)
+    set_cage: BoolProperty(default=True)
 
     def execute(self, context):
         selection = context.selected_objects
@@ -200,7 +200,7 @@ class ModifiersSubsurfLevel_Set(Operator, BasePollCheck):
     bl_label = "Set Subsurf level"
     bl_description = "Change subsurf modifier level"
 
-    level = IntProperty(
+    level: IntProperty(
         name="Subsurf Level",
         description="Change subsurf modifier level",
         default=1,
diff --git a/space_view3d_display_tools/select_tools.py b/space_view3d_display_tools/select_tools.py
index 2eb79dfc..18f93185 100644
--- a/space_view3d_display_tools/select_tools.py
+++ b/space_view3d_display_tools/select_tools.py
@@ -221,7 +221,7 @@ class OBJECT_OT_HideShowByTypeTemplate():
 
     bl_options = {'UNDO', 'REGISTER'}
 
-    type = EnumProperty(
+    type: EnumProperty(
             items=(
                 ('MESH', 'Mesh', ''),
                 ('CURVE', 'Curve', ''),
@@ -285,18 +285,18 @@ class OBJECT_OT_HideByType(OBJECT_OT_HideShowByTypeTemplate, Operator):
     bl_idname = "object.hide_by_type"
     bl_label = "Hide By Type"
 
-    hide_or_show = BoolProperty(
+    hide_or_show: BoolProperty(
             name="Hide",
             description="Inverse effect",
             options={'HIDDEN'},
             default=1
             )
-    hide_selected = BoolProperty(
+    hide_selected: BoolProperty(
             name="Selected",
             description="Hide only selected objects",
             default=0
             )
-    hide_render_restricted = BoolProperty(
+    hide_render_restricted: BoolProperty(
             name="Only Render-Restricted",
             description="Hide only render restricted objects",
             default=0
@@ -307,18 +307,18 @@ class OBJECT_OT_ShowByType(OBJECT_OT_HideShowByTypeTemplate, Operator):
     bl_idname = "object.show_by_type"
     bl_label = "Show By Type"
 
-    hide_or_show = BoolProperty(
+    hide_or_show: BoolProperty(
             name="Hide",
             description="Inverse effect",
             options={'HIDDEN'},
             default=0
             )
-    hide_selected = BoolProperty(
+    hide_selected: BoolProperty(
             name="Selected",
             options={'HIDDEN'},
             default=0
             )
-    hide_render_restricted = BoolProperty(
+    hide_render_restricted: BoolProperty(
             name="Only Renderable",
             description="Show only non render restricted objects",
             default=0
diff --git a/space_view3d_display_tools/selection_restrictor.py b/space_view3d_display_tools/selection_restrictor.py
index 71561bfe..e5816409 100644
--- a/space_view3d_display_tools/selection_restrictor.py
+++ b/space_view3d_display_tools/selection_restrictor.py
@@ -190,7 +190,7 @@ class RestrictorShow(Operator):
     bl_option = {'REGISTER', 'UNDO'}
     bl_description = "Show/Hide Selection Restrictors"
 
-    hide = StringProperty()
+    hide: StringProperty()
 
     def execute(self, context):
         global show
@@ -213,7 +213,7 @@ class IgnoreRestrictors(Operator):
     bl_label = "Ignore Restrictor by Selected Objects"
     bl_option = {'REGISTER', 'UNDO'}
     bl_description = "Ignore or do not ignore Restrictor by selected objects"
-    ignore = BoolProperty()
+    ignore: BoolProperty()
 
     def execute(self, context):
         if self.ignore is True:
@@ -237,7 +237,7 @@ class RestrictorMesh(Operator):
     bl_label = "restrictor meshes"
     bl_option = {'REGISTER', 'UNDO'}
     bl_description = "Meshes selection restrictor"
-    mesh = StringProperty()
+    mesh: StringProperty()
 
     def execute(self, context):
         global mesh
diff --git a/space_view3d_display_tools/useless_tools.py b/space_view3d_display_tools/useless_tools.py
index 22931423..9c89d3fe 100644
--- a/space_view3d_display_tools/useless_tools.py
+++ b/space_view3d_display_tools/useless_tools.py
@@ -48,7 +48,7 @@ class UTSetSelectable(Operator):
     bl_label = "Set Selectable"
     bl_description = "Sets selectability for the selected objects"
 
-    selectable = BoolProperty()
+    selectable: BoolProperty()
 
     def execute(self, context):
         errors = []
@@ -72,7 +72,7 @@ class UTSetRenderable(Operator):
     bl_label = "Set Renderable"
     bl_description = "Sets renderability for the selected objects"
 
-    renderable = BoolProperty()
+    renderable: BoolProperty()
 
     def execute(self, context):
         errors = []
@@ -158,10 +158,10 @@ class UTWireShowHideSelAll(Operator):
     bl_label = "Show / Hide Wire Selected or All"
     bl_description = "Change the status of the Wire display on Selected Objects"
 
-    show = BoolProperty(
+    show: BoolProperty(
             default=False
             )
-    selected = BoolProperty(
+    selected: BoolProperty(
             default=False
             )
 
@@ -192,10 +192,10 @@ class UTSubsurfHideSelAll(Operator):
                       "Hide and Show operate on Selected Objects only\n"
                       "Hide All and Show All operate on All Objects in the data")
 
-    show = BoolProperty(
+    show: BoolProperty(
             default=False
             )
-    selected = BoolProperty(
+    selected: BoolProperty(
             default=False
             )
 
@@ -221,10 +221,10 @@ class UTOptimalDisplaySelAll(Operator):
     bl_label = "Optimal Display"
     bl_description = "Disables Optimal Display for all Subsurf modifiers on objects"
 
-    on = BoolProperty(
+    on: BoolProperty(
             default=False
             )
-    selected = BoolProperty(
+    selected: BoolProperty(
             default=False
             )
 
@@ -250,7 +250,7 @@ class UTAllEdges(Operator):
     bl_label = "All Edges"
     bl_description = "Change the status of All Edges overlay on all objects"
 
-    on = BoolProperty(
+    on: BoolProperty(
             default=False
             )
 
@@ -274,7 +274,7 @@ class UTDoubleSided(Operator):
     bl_label = "Double Sided Normals"
     bl_description = "Disables Double Sided Normals for all objects"
 
-    on = BoolProperty(
+    on: BoolProperty(
             default=False
             )
 
diff --git a/space_view3d_pie_menus/__init__.py b/space_view3d_pie_menus/__init__.py
index 3763c4dc..7f0c3aff 100644
--- a/space_view3d_pie_menus/__init__.py
+++ b/space_view3d_pie_menus/__init__.py
@@ -176,13 +176,13 @@ class PieToolsPreferences(AddonPreferences):
             return update
 
         use_prop_name = 'use_' + mod_name
-        __annotations__[use_prop_name] = BoolProperty(
+        __annotations__[use_prop_name]: BoolProperty(
             name=mod.bl_info['name'],
             description=mod.bl_info.get('description', ''),
             update=gen_update(mod, use_prop_name),
         )
 
-        __annotations__['show_expanded_' + mod_name] = BoolProperty()
+        __annotations__['show_expanded_' + mod_name]: BoolProperty()
 
     def draw(self, context):
         layout = self.layout
diff --git a/space_view3d_spacebar_menu.py b/space_view3d_spacebar_menu.py
index 101955a7..d4054f70 100644
--- a/space_view3d_spacebar_menu.py
+++ b/space_view3d_spacebar_menu.py
@@ -2870,7 +2870,7 @@ class SetObjectMode(Operator):
     bl_description = "I set the interactive mode of object"
     bl_options = {'REGISTER'}
 
-    mode = StringProperty(
+    mode: StringProperty(
                     name="Interactive mode",
                     default="OBJECT"
                     )
@@ -2962,13 +2962,13 @@ def UseBrushesLists():
 class VIEW3D_MT_Space_Dynamic_Menu_Pref(AddonPreferences):
     bl_idname = __name__
 
-    use_separators = BoolProperty(
+    use_separators: BoolProperty(
                     name="Use Separators in the menus",
                     default=True,
                     description=("Use separators in the menus, a trade-off between \n"
                                  "readability vs. using more space for displaying items")
                     )
-    use_brushes_lists = BoolProperty(
+    use_brushes_lists: BoolProperty(
                     name="Use compact menus for brushes",
                     default=False,
                     description=("Use more compact menus instead  \n"
diff --git a/space_view3d_stored_views/__init__.py b/space_view3d_stored_views/__init__.py
index a9767bff..74124517 100644
--- a/space_view3d_stored_views/__init__.py
+++ b/space_view3d_stored_views/__init__.py
@@ -99,7 +99,7 @@ class VIEW3D_stored_views_initialize(Operator):
 class VIEW3D_stored_views_preferences(AddonPreferences):
     bl_idname = __name__
 
-    show_exporters = BoolProperty(
+    show_exporters: BoolProperty(
         name="Enable I/O Operators",
         default=False,
         description="Enable Import/Export Operations in the UI:\n"
@@ -107,7 +107,7 @@ class VIEW3D_stored_views_preferences(AddonPreferences):
                     "Export Stored Views preset and \n"
                     "Import stored views from scene",
     )
-    view_3d_update_rate = IntProperty(
+    view_3d_update_rate: IntProperty(
         name="3D view update",
         description="Update rate of the 3D view redraw\n"
                     "Increse the value if the UI feels sluggish",
diff --git a/space_view3d_stored_views/io.py b/space_view3d_stored_views/io.py
index 69c5b02b..a3125fcc 100644
--- a/space_view3d_stored_views/io.py
+++ b/space_view3d_stored_views/io.py
@@ -209,11 +209,11 @@ class VIEW3D_stored_views_import(Operator, ImportHelper):
     bl_description = "Import a .blsv preset file to the current Stored Views"
 
     filename_ext = ".blsv"
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
         default="*.blsv",
         options={'HIDDEN'}
     )
-    replace = BoolProperty(
+    replace: BoolProperty(
         name="Replace",
         default=True,
         description="Replace current stored views, otherwise append"
@@ -258,12 +258,12 @@ class VIEW3D_stored_views_import_from_scene(Operator):
     bl_label = "Import stored views from scene"
     bl_description = "Import currently stored views from an another scene"
 
-    scene_name = StringProperty(
+    scene_name: StringProperty(
         name="Scene Name",
         description="A current blend scene",
         default=""
     )
-    replace = BoolProperty(
+    replace: BoolProperty(
         name="Replace",
         default=True,
         description="Replace current stored views, otherwise append"
@@ -306,14 +306,14 @@ class VIEW3D_stored_views_export(Operator, ExportHelper):
     bl_description = "Export the current Stored Views to a .blsv preset file"
 
     filename_ext = ".blsv"
-    filepath = StringProperty(
+    filepath: StringProperty(
         default=os.path.join(IO_Utils.get_preset_path()[0], "untitled")
     )
-    filter_glob = StringProperty(
+    filter_glob: StringProperty(
         default="*.blsv",
         options={'HIDDEN'}
     )
-    preset_name = StringProperty(
+    preset_name: StringProperty(
         name="Preset name",
         default="",
         description="Name of the stored views preset"
diff --git a/space_view3d_stored_views/operators.py b/space_view3d_stored_views/operators.py
index c0bf09ab..82cfecda 100644
--- a/space_view3d_stored_views/operators.py
+++ b/space_view3d_stored_views/operators.py
@@ -15,7 +15,7 @@ class VIEW3D_stored_views_save(Operator):
     bl_label = "Save Current"
     bl_description = "Save the view 3d current state"
 
-    index = IntProperty()
+    index: IntProperty()
 
     def execute(self, context):
         mode = context.scene.stored_views.mode
@@ -32,7 +32,7 @@ class VIEW3D_stored_views_set(Operator):
     bl_label = "Set"
     bl_description = "Update the view 3D according to this view"
 
-    index = IntProperty()
+    index: IntProperty()
 
     def execute(self, context):
         mode = context.scene.stored_views.mode
@@ -49,7 +49,7 @@ class VIEW3D_stored_views_delete(Operator):
     bl_label = "Delete"
     bl_description = "Delete this view"
 
-    index = IntProperty()
+    index: IntProperty()
 
     def execute(self, context):
         data = DataStore()
diff --git a/space_view3d_stored_views/properties.py b/space_view3d_stored_views/properties.py
index 8fb280d4..2c4adee3 100644
--- a/space_view3d_stored_views/properties.py
+++ b/space_view3d_stored_views/properties.py
@@ -16,41 +16,41 @@ from bpy.props import (
 
 
 class POVData(PropertyGroup):
-    distance = FloatProperty()
-    location = FloatVectorProperty(
+    distance: FloatProperty()
+    location: FloatVectorProperty(
             subtype='TRANSLATION'
             )
-    rotation = FloatVectorProperty(
+    rotation: FloatVectorProperty(
             subtype='QUATERNION',
             size=4
             )
-    name = StringProperty()
-    perspective = EnumProperty(
+    name: StringProperty()
+    perspective: EnumProperty(
             items=[('PERSP', '', ''),
                    ('ORTHO', '', ''),
                    ('CAMERA', '', '')]
             )
-    lens = FloatProperty()
-    clip_start = FloatProperty()
-    clip_end = FloatProperty()
-    lock_cursor = BoolProperty()
-    cursor_location = FloatVectorProperty()
-    perspective_matrix_md5 = StringProperty()
-    camera_name = StringProperty()
-    camera_type = StringProperty()
-    lock_object_name = StringProperty()
+    lens: FloatProperty()
+    clip_start: FloatProperty()
+    clip_end: FloatProperty()
+    lock_cursor: BoolProperty()
+    cursor_location: FloatVectorProperty()
+    perspective_matrix_md5: StringProperty()
+    camera_name: StringProperty()
+    camera_type: StringProperty()
+    lock_object_name: StringProperty()
 
 
 class LayersData(PropertyGroup):
     view_layers = BoolVectorProperty(size=20)
     scene_layers = BoolVectorProperty(size=20)
-    lock_camera_and_layers = BoolProperty()
-    name = StringProperty()
+    lock_camera_and_layers: BoolProperty()
+    name: StringProperty()
 
 
 class DisplayData(PropertyGroup):
-    name = StringProperty()
-    viewport_shade = EnumProperty(
+    name: StringProperty()
+    viewport_shade: EnumProperty(
             items=[('BOUNDBOX', 'BOUNDBOX', 'BOUNDBOX'),
                    ('WIREFRAME', 'WIREFRAME', 'WIREFRAME'),
                    ('SOLID', 'SOLID', 'SOLID'),
@@ -58,23 +58,23 @@ class DisplayData(PropertyGroup):
                    ('MATERIAL', 'MATERIAL', 'MATERIAL'),
                    ('RENDERED', 'RENDERED', 'RENDERED')]
             )
-    show_only_render = BoolProperty()
-    show_outline_selected = BoolProperty()
-    show_all_objects_origin = BoolProperty()
-    show_relationship_lines = BoolProperty()
-    show_floor = BoolProperty()
-    show_axis_x = BoolProperty()
-    show_axis_y = BoolProperty()
-    show_axis_z = BoolProperty()
-    grid_lines = IntProperty()
-    grid_scale = FloatProperty()
-    grid_subdivisions = IntProperty()
-    material_mode = StringProperty()
-    show_textured_solid = BoolProperty()
-    quad_view = BoolProperty()
-    lock_rotation = BoolProperty()
-    show_sync_view = BoolProperty()
-    use_box_clip = BoolProperty()
+    show_only_render: BoolProperty()
+    show_outline_selected: BoolProperty()
+    show_all_objects_origin: BoolProperty()
+    show_relationship_lines: BoolProperty()
+    show_floor: BoolProperty()
+    show_axis_x: BoolProperty()
+    show_axis_y: BoolProperty()
+    show_axis_z: BoolProperty()
+    grid_lines: IntProperty()
+    grid_scale: FloatProperty()
+    grid_subdivisions: IntProperty()
+    material_mode: StringProperty()
+    show_textured_solid: BoolProperty()
+    quad_view: BoolProperty()
+    lock_rotation: BoolProperty()
+    show_sync_view: BoolProperty()
+    use_box_clip: BoolProperty()
 
 
 class ViewData(PropertyGroup):
@@ -87,23 +87,23 @@ class ViewData(PropertyGroup):
     display = PointerProperty(
             type=DisplayData
             )
-    name = StringProperty()
+    name: StringProperty()
 
 
 class StoredViewsData(PropertyGroup):
-    pov_list = CollectionProperty(
+    pov_list: CollectionProperty(
             type=POVData
             )
-    layers_list = CollectionProperty(
+    layers_list: CollectionProperty(
             type=LayersData
             )
-    display_list = CollectionProperty(
+    display_list: CollectionProperty(
             type=DisplayData
             )
-    view_list = CollectionProperty(
+    view_list: CollectionProperty(
             type=ViewData
             )
-    mode = EnumProperty(
+    mode: EnumProperty(
             name="Mode",
             items=[('VIEW', "View", "3D View settings"),
                    ('POV', "POV", "POV settings"),
@@ -115,6 +115,6 @@ class StoredViewsData(PropertyGroup):
             size=4,
             default=[-1, -1, -1, -1]
             )
-    view_modified = BoolProperty(
+    view_modified: BoolProperty(
             default=False
             )
diff --git a/system_property_chart.py b/system_property_chart.py
index 3fc5ff13..cbe4835a 100644
--- a/system_property_chart.py
+++ b/system_property_chart.py
@@ -254,9 +254,9 @@ class CopyPropertyChart(Operator):
     bl_idname = "wm.chart_copy"
     bl_label = "Copy properties from active to selected"
 
-    data_path_active = StringProperty()
-    data_path_selected = StringProperty()
-    data_path = StringProperty()
+    data_path_active: StringProperty()
+    data_path_selected: StringProperty()
+    data_path: StringProperty()
 
     def execute(self, context):
         # so attributes are found for '_property_chart_data_get()'
diff --git a/ui_layer_manager.py b/ui_layer_manager.py
index 18e28ebb..d3bb41c3 100644
--- a/ui_layer_manager.py
+++ b/ui_layer_manager.py
@@ -57,44 +57,44 @@ FAKE_LAYER_GROUP = [True] * NUM_LAYERS
 
 
 class NamedLayer(PropertyGroup):
-    name = StringProperty(
+    name: StringProperty(
             name="Layer Name"
             )
-    use_lock = BoolProperty(
+    use_lock: BoolProperty(
             name="Lock Layer",
             default=False
             )
-    use_object_select = BoolProperty(
+    use_object_select: BoolProperty(
             name="Object Select",
             default=True
             )
-    use_wire = BoolProperty(
+    use_wire: BoolProperty(
             name="Wire Layer",
             default=False
             )
 
 
 class NamedLayers(PropertyGroup):
-    layers = CollectionProperty(type=NamedLayer)
+    layers: CollectionProperty(type=NamedLayer)
 
-    use_hide_empty_layers = BoolProperty(
+    use_hide_empty_layers: BoolProperty(
             name="Hide Empty Layer",
             default=False
             )
-    use_extra_options = BoolProperty(
+    use_extra_options: BoolProperty(
             name="Show Extra Options",
             default=True
             )
-    use_layer_indices = BoolProperty(
+    use_layer_indices: BoolProperty(
             name="Show Layer Indices",
             default=False
             )
-    use_classic = BoolProperty(
+    use_classic: BoolProperty(
             name="Classic",
             default=False,
             description="Use a classic layer selection visibility"
             )
-    use_init = BoolProperty(
+    use_init: BoolProperty(
             default=True,
             options={'HIDDEN'}
             )
@@ -114,9 +114,9 @@ def check_init_data(scene):
 
 
 class LayerGroup(PropertyGroup):
-    use_toggle = BoolProperty(name="", default=False)
-    use_wire = BoolProperty(name="", default=False)
-    use_lock = BoolProperty(name="", default=False)
+    use_toggle: BoolProperty(name="", default=False)
+    use_wire: BoolProperty(name="", default=False)
+    use_lock: BoolProperty(name="", default=False)
 
     layers = BoolVectorProperty(name="Layers", default=([False] * NUM_LAYERS), size=NUM_LAYERS, subtype='LAYER')
 
@@ -151,7 +151,7 @@ class SCENE_OT_namedlayer_group_remove(Operator):
     bl_idname = "scene.namedlayer_group_remove"
     bl_label = "Remove Layer Group"
 
-    group_idx = bpy.props.IntProperty()
+    group_idx: bpy.props.IntProperty()
 
     @classmethod
     def poll(cls, context):
@@ -173,10 +173,10 @@ class SCENE_OT_namedlayer_toggle_visibility(Operator):
     bl_idname = "scene.namedlayer_toggle_visibility"
     bl_label = "Show/Hide Layer"
 
-    layer_idx = IntProperty()
-    group_idx = IntProperty()
-    use_spacecheck = BoolProperty()
-    extend = BoolProperty(options={'SKIP_SAVE'})
+    layer_idx: IntProperty()
+    group_idx: IntProperty()
+    use_spacecheck: BoolProperty()
+    extend: BoolProperty(options={'SKIP_SAVE'})
 
     @classmethod
     def poll(cls, context):
@@ -218,8 +218,8 @@ class SCENE_OT_namedlayer_move_to_layer(Operator):
     bl_idname = "scene.namedlayer_move_to_layer"
     bl_label = "Move Objects To Layer"
 
-    layer_idx = IntProperty()
-    extend = BoolProperty(options={'SKIP_SAVE'})
+    layer_idx: IntProperty()
+    extend: BoolProperty(options={'SKIP_SAVE'})
 
     @classmethod
     def poll(cls, context):
@@ -252,9 +252,9 @@ class SCENE_OT_namedlayer_toggle_wire(Operator):
     bl_idname = "scene.namedlayer_toggle_wire"
     bl_label = "Toggle Objects Draw Wire"
 
-    layer_idx = IntProperty()
-    use_wire = BoolProperty()
-    group_idx = IntProperty()
+    layer_idx: IntProperty()
+    use_wire: BoolProperty()
+    group_idx: IntProperty()
 
     @classmethod
     def poll(cls, context):
@@ -292,9 +292,9 @@ class SCENE_OT_namedlayer_lock_all(Operator):
     bl_idname = "scene.namedlayer_lock_all"
     bl_label = "Lock Objects"
 
-    layer_idx = IntProperty()
-    use_lock = BoolProperty()
-    group_idx = IntProperty()
+    layer_idx: IntProperty()
+    use_lock: BoolProperty()
+    group_idx: IntProperty()
 
     @classmethod
     def poll(cls, context):
@@ -332,11 +332,11 @@ class SCENE_OT_namedlayer_select_objects_by_layer(Operator):
     bl_idname = "scene.namedlayer_select_objects_by_layer"
     bl_label = "Select Objects In Layer"
 
-    select_obj = BoolProperty()
-    layer_idx = IntProperty()
+    select_obj: BoolProperty()
+    layer_idx: IntProperty()
 
-    extend = BoolProperty(options={'SKIP_SAVE'})
-    active = BoolProperty(options={'SKIP_SAVE'})
+    extend: BoolProperty(options={'SKIP_SAVE'})
+    active: BoolProperty(options={'SKIP_SAVE'})
 
     @classmethod
     def poll(cls, context):
@@ -379,7 +379,7 @@ class SCENE_OT_namedlayer_show_all(Operator):
     bl_idname = "scene.namedlayer_show_all"
     bl_label = "Select All Layers"
 
-    show = BoolProperty()
+    show: BoolProperty()
 
     @classmethod
     def poll(cls, context):
@@ -618,7 +618,7 @@ class LayerMAddonPreferences(AddonPreferences):
     # when defining this in a submodule of a python package.
     bl_idname = __name__
 
-    category = StringProperty(
+    category: StringProperty(
             name="Tab Category",
             description="Choose a name for the category of the panel",
             default="Layers",
diff --git a/uv_bake_texture_to_vcols.py b/uv_bake_texture_to_vcols.py
index 0dc5e549..9a83c6dc 100644
--- a/uv_bake_texture_to_vcols.py
+++ b/uv_bake_texture_to_vcols.py
@@ -55,7 +55,7 @@ class UV_OT_bake_texture_to_vcols(bpy.types.Operator):
         "(requires image texture)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    replace_active_layer = BoolProperty(
+    replace_active_layer: BoolProperty(
         name="Replace layer",
         description="Overwrite active Vertex Color layer",
         default=True)
@@ -65,7 +65,7 @@ class UV_OT_bake_texture_to_vcols(bpy.types.Operator):
         ("REPEAT", "Repeat", "Tile the image so that each vertex is accounted for."),
         ("EXTEND", "Extend", "Extends the edges of the image to the UV-coordinates.")]
 
-    mappingMode = EnumProperty(
+    mappingMode: EnumProperty(
        items=mappingModes,
        default="CLIP",
        name="Mapping",
@@ -89,14 +89,14 @@ class UV_OT_bake_texture_to_vcols(bpy.types.Operator):
                      ("LINEAR_LIGHT", "Linear Light", "")
                     ]
 
-    blendingMode = EnumProperty(
+    blendingMode: EnumProperty(
         items=blendingModes,
         default="MULTIPLY",
         name="Blend Type",
         description="The blending mode to use when baking")
 
-    mirror_x = BoolProperty(name="Mirror X", description="Mirror the image on the X-axis")
-    mirror_y = BoolProperty(name="Mirror Y", description="Mirror the image on the Y-axis")
+    mirror_x: BoolProperty(name="Mirror X", description="Mirror the image on the X-axis")
+    mirror_y: BoolProperty(name="Mirror Y", description="Mirror the image on the Y-axis")
 
     @classmethod
     def poll(self, context):
diff --git a/uv_magic_uv/op/align_uv.py b/uv_magic_uv/op/align_uv.py
index 8225858e..5420c33f 100644
--- a/uv_magic_uv/op/align_uv.py
+++ b/uv_magic_uv/op/align_uv.py
@@ -296,41 +296,41 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_align_uv_enabled = BoolProperty(
+        scene.muv_align_uv_enabled: BoolProperty(
             name="Align UV Enabled",
             description="Align UV is enabled",
             default=False
         )
-        scene.muv_align_uv_transmission = BoolProperty(
+        scene.muv_align_uv_transmission: BoolProperty(
             name="Transmission",
             description="Align linked UVs",
             default=False
         )
-        scene.muv_align_uv_select = BoolProperty(
+        scene.muv_align_uv_select: BoolProperty(
             name="Select",
             description="Select UVs which are aligned",
             default=False
         )
-        scene.muv_align_uv_vertical = BoolProperty(
+        scene.muv_align_uv_vertical: BoolProperty(
             name="Vert-Infl (Vertical)",
             description="Align vertical direction influenced "
                         "by mesh vertex proportion",
             default=False
         )
-        scene.muv_align_uv_horizontal = BoolProperty(
+        scene.muv_align_uv_horizontal: BoolProperty(
             name="Vert-Infl (Horizontal)",
             description="Align horizontal direction influenced "
                         "by mesh vertex proportion",
             default=False
         )
-        scene.muv_align_uv_mesh_infl = FloatProperty(
+        scene.muv_align_uv_mesh_infl: FloatProperty(
             name="Mesh Influence",
             description="Influence rate of mesh vertex",
             min=0.0,
             max=1.0,
             default=0.0
         )
-        scene.muv_align_uv_location = EnumProperty(
+        scene.muv_align_uv_location: EnumProperty(
             name="Location",
             description="Align location",
             items=[
@@ -361,12 +361,12 @@ class MUV_OT_AlignUV_Circle(bpy.types.Operator):
     bl_description = "Align UV coordinates to Circle"
     bl_options = {'REGISTER', 'UNDO'}
 
-    transmission = BoolProperty(
+    transmission: BoolProperty(
         name="Transmission",
         description="Align linked UVs",
         default=False
     )
-    select = BoolProperty(
+    select: BoolProperty(
         name="Select",
         description="Select UVs which are aligned",
         default=False
@@ -447,29 +447,29 @@ class MUV_OT_AlignUV_Straighten(bpy.types.Operator):
     bl_description = "Straighten UV coordinates"
     bl_options = {'REGISTER', 'UNDO'}
 
-    transmission = BoolProperty(
+    transmission: BoolProperty(
         name="Transmission",
         description="Align linked UVs",
         default=False
     )
-    select = BoolProperty(
+    select: BoolProperty(
         name="Select",
         description="Select UVs which are aligned",
         default=False
     )
-    vertical = BoolProperty(
+    vertical: BoolProperty(
         name="Vert-Infl (Vertical)",
         description="Align vertical direction influenced "
                     "by mesh vertex proportion",
         default=False
     )
-    horizontal = BoolProperty(
+    horizontal: BoolProperty(
         name="Vert-Infl (Horizontal)",
         description="Align horizontal direction influenced "
                     "by mesh vertex proportion",
         default=False
     )
-    mesh_infl = FloatProperty(
+    mesh_infl: FloatProperty(
         name="Mesh Influence",
         description="Influence rate of mesh vertex",
         min=0.0,
@@ -599,29 +599,29 @@ class MUV_OT_AlignUV_Axis(bpy.types.Operator):
     bl_description = "Align UV to XY-axis"
     bl_options = {'REGISTER', 'UNDO'}
 
-    transmission = BoolProperty(
+    transmission: BoolProperty(
         name="Transmission",
         description="Align linked UVs",
         default=False
     )
-    select = BoolProperty(
+    select: BoolProperty(
         name="Select",
         description="Select UVs which are aligned",
         default=False
     )
-    vertical = BoolProperty(
+    vertical: BoolProperty(
         name="Vert-Infl (Vertical)",
         description="Align vertical direction influenced "
                     "by mesh vertex proportion",
         default=False
     )
-    horizontal = BoolProperty(
+    horizontal: BoolProperty(
         name="Vert-Infl (Horizontal)",
         description="Align horizontal direction influenced "
                     "by mesh vertex proportion",
         default=False
     )
-    location = EnumProperty(
+    location: EnumProperty(
         name="Location",
         description="Align location",
         items=[
@@ -631,7 +631,7 @@ class MUV_OT_AlignUV_Axis(bpy.types.Operator):
         ],
         default='MIDDLE'
     )
-    mesh_infl = FloatProperty(
+    mesh_infl: FloatProperty(
         name="Mesh Influence",
         description="Influence rate of mesh vertex",
         min=0.0,
diff --git a/uv_magic_uv/op/align_uv_cursor.py b/uv_magic_uv/op/align_uv_cursor.py
index ab4e93b4..bd92cf81 100644
--- a/uv_magic_uv/op/align_uv_cursor.py
+++ b/uv_magic_uv/op/align_uv_cursor.py
@@ -86,13 +86,13 @@ class _Properties:
             cy = bd_size[1] * value[1]
             space.cursor_location = Vector((cx, cy))
 
-        scene.muv_align_uv_cursor_enabled = BoolProperty(
+        scene.muv_align_uv_cursor_enabled: BoolProperty(
             name="Align UV Cursor Enabled",
             description="Align UV Cursor is enabled",
             default=False
         )
 
-        scene.muv_align_uv_cursor_cursor_loc = FloatVectorProperty(
+        scene.muv_align_uv_cursor_cursor_loc: FloatVectorProperty(
             name="UV Cursor Location",
             size=2,
             precision=4,
@@ -103,7 +103,7 @@ class _Properties:
             get=auvc_get_cursor_loc,
             set=auvc_set_cursor_loc
         )
-        scene.muv_align_uv_cursor_align_method = EnumProperty(
+        scene.muv_align_uv_cursor_align_method: EnumProperty(
             name="Align Method",
             description="Align Method",
             default='TEXTURE',
@@ -114,7 +114,7 @@ class _Properties:
             ]
         )
 
-        scene.muv_uv_cursor_location_enabled = BoolProperty(
+        scene.muv_uv_cursor_location_enabled: BoolProperty(
             name="UV Cursor Location Enabled",
             description="UV Cursor Location is enabled",
             default=False
@@ -138,7 +138,7 @@ class MUV_OT_AlignUVCursor(bpy.types.Operator):
     bl_description = "Align cursor to the center of UV island"
     bl_options = {'REGISTER', 'UNDO'}
 
-    position = EnumProperty(
+    position: EnumProperty(
         items=(
             ('CENTER', "Center", "Align to Center"),
             ('LEFT_TOP', "Left Top", "Align to Left Top"),
@@ -154,7 +154,7 @@ class MUV_OT_AlignUVCursor(bpy.types.Operator):
         description="Align position",
         default='CENTER'
     )
-    base = EnumProperty(
+    base: EnumProperty(
         items=(
             ('TEXTURE', "Texture", "Align based on Texture"),
             ('UV', "UV", "Align to UV"),
diff --git a/uv_magic_uv/op/copy_paste_uv.py b/uv_magic_uv/op/copy_paste_uv.py
index f5ff883e..11489f8c 100644
--- a/uv_magic_uv/op/copy_paste_uv.py
+++ b/uv_magic_uv/op/copy_paste_uv.py
@@ -280,17 +280,17 @@ class _Properties:
         scene.muv_props.copy_paste_uv = Props()
         scene.muv_props.copy_paste_uv_selseq = Props()
 
-        scene.muv_copy_paste_uv_enabled = BoolProperty(
+        scene.muv_copy_paste_uv_enabled: BoolProperty(
             name="Copy/Paste UV Enabled",
             description="Copy/Paste UV is enabled",
             default=False
         )
-        scene.muv_copy_paste_uv_copy_seams = BoolProperty(
+        scene.muv_copy_paste_uv_copy_seams: BoolProperty(
             name="Seams",
             description="Copy Seams",
             default=True
         )
-        scene.muv_copy_paste_uv_mode = EnumProperty(
+        scene.muv_copy_paste_uv_mode: EnumProperty(
             items=[
                 ('DEFAULT', "Default", "Default Mode"),
                 ('SEL_SEQ', "Selection Sequence", "Selection Sequence Mode")
@@ -299,7 +299,7 @@ class _Properties:
             description="Copy/Paste UV Mode",
             default='DEFAULT'
         )
-        scene.muv_copy_paste_uv_strategy = EnumProperty(
+        scene.muv_copy_paste_uv_strategy: EnumProperty(
             name="Strategy",
             description="Paste Strategy",
             items=[
@@ -331,7 +331,7 @@ class MUV_OT_CopyPasteUV_CopyUV(bpy.types.Operator):
     bl_description = "Copy UV coordinate"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
 
     @classmethod
     def poll(cls, context):
@@ -408,8 +408,8 @@ class MUV_OT_CopyPasteUV_PasteUV(bpy.types.Operator):
     bl_description = "Paste UV coordinate"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
-    strategy = EnumProperty(
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
+    strategy: EnumProperty(
         name="Strategy",
         description="Paste Strategy",
         items=[
@@ -418,18 +418,18 @@ class MUV_OT_CopyPasteUV_PasteUV(bpy.types.Operator):
         ],
         default="N_M"
     )
-    flip_copied_uv = BoolProperty(
+    flip_copied_uv: BoolProperty(
         name="Flip Copied UV",
         description="Flip Copied UV...",
         default=False
     )
-    rotate_copied_uv = IntProperty(
+    rotate_copied_uv: IntProperty(
         default=0,
         name="Rotate Copied UV",
         min=0,
         max=30
     )
-    copy_seams = BoolProperty(
+    copy_seams: BoolProperty(
         name="Seams",
         description="Copy Seams",
         default=True
@@ -548,7 +548,7 @@ class MUV_OT_CopyPasteUV_SelSeqCopyUV(bpy.types.Operator):
     bl_description = "Copy UV data by selection sequence"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
 
     @classmethod
     def poll(cls, context):
@@ -625,8 +625,8 @@ class MUV_OT_CopyPasteUV_SelSeqPasteUV(bpy.types.Operator):
     bl_description = "Paste UV coordinate by selection sequence"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
-    strategy = EnumProperty(
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
+    strategy: EnumProperty(
         name="Strategy",
         description="Paste Strategy",
         items=[
@@ -635,18 +635,18 @@ class MUV_OT_CopyPasteUV_SelSeqPasteUV(bpy.types.Operator):
         ],
         default="N_M"
     )
-    flip_copied_uv = BoolProperty(
+    flip_copied_uv: BoolProperty(
         name="Flip Copied UV",
         description="Flip Copied UV...",
         default=False
     )
-    rotate_copied_uv = IntProperty(
+    rotate_copied_uv: IntProperty(
         default=0,
         name="Rotate Copied UV",
         min=0,
         max=30
     )
-    copy_seams = BoolProperty(
+    copy_seams: BoolProperty(
         name="Seams",
         description="Copy Seams",
         default=True
diff --git a/uv_magic_uv/op/copy_paste_uv_object.py b/uv_magic_uv/op/copy_paste_uv_object.py
index dc7073b8..691ca42a 100644
--- a/uv_magic_uv/op/copy_paste_uv_object.py
+++ b/uv_magic_uv/op/copy_paste_uv_object.py
@@ -75,7 +75,7 @@ class _Properties:
 
         scene.muv_props.copy_paste_uv_object = Props()
 
-        scene.muv_copy_paste_uv_object_copy_seams = BoolProperty(
+        scene.muv_copy_paste_uv_object_copy_seams: BoolProperty(
             name="Seams",
             description="Copy Seams",
             default=True
@@ -108,7 +108,7 @@ class MUV_OT_CopyPasteUVObject_CopyUV(bpy.types.Operator):
     bl_description = "Copy UV coordinate (Among Objects)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
 
     @classmethod
     def poll(cls, context):
@@ -186,8 +186,8 @@ class MUV_OT_CopyPasteUVObject_PasteUV(bpy.types.Operator):
     bl_description = "Paste UV coordinate (Among Objects)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    uv_map = StringProperty(default="__default", options={'HIDDEN'})
-    copy_seams = BoolProperty(
+    uv_map: StringProperty(default="__default", options={'HIDDEN'})
+    copy_seams: BoolProperty(
         name="Seams",
         description="Copy Seams",
         default=True
diff --git a/uv_magic_uv/op/flip_rotate_uv.py b/uv_magic_uv/op/flip_rotate_uv.py
index 2ecab254..0ff38145 100644
--- a/uv_magic_uv/op/flip_rotate_uv.py
+++ b/uv_magic_uv/op/flip_rotate_uv.py
@@ -144,12 +144,12 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_flip_rotate_uv_enabled = BoolProperty(
+        scene.muv_flip_rotate_uv_enabled: BoolProperty(
             name="Flip/Rotate UV Enabled",
             description="Flip/Rotate UV is enabled",
             default=False
         )
-        scene.muv_flip_rotate_uv_seams = BoolProperty(
+        scene.muv_flip_rotate_uv_seams: BoolProperty(
             name="Seams",
             description="Seams",
             default=True
@@ -173,18 +173,18 @@ class MUV_OT_FlipRotate(bpy.types.Operator):
     bl_description = "Flip/Rotate UV coordinate"
     bl_options = {'REGISTER', 'UNDO'}
 
-    flip = BoolProperty(
+    flip: BoolProperty(
         name="Flip UV",
         description="Flip UV...",
         default=False
     )
-    rotate = IntProperty(
+    rotate: IntProperty(
         default=0,
         name="Rotate UV",
         min=0,
         max=30
     )
-    seams = BoolProperty(
+    seams: BoolProperty(
         name="Seams",
         description="Seams",
         default=True
diff --git a/uv_magic_uv/op/mirror_uv.py b/uv_magic_uv/op/mirror_uv.py
index b806daea..bd71ee5f 100644
--- a/uv_magic_uv/op/mirror_uv.py
+++ b/uv_magic_uv/op/mirror_uv.py
@@ -107,12 +107,12 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_mirror_uv_enabled = BoolProperty(
+        scene.muv_mirror_uv_enabled: BoolProperty(
             name="Mirror UV Enabled",
             description="Mirror UV is enabled",
             default=False
         )
-        scene.muv_mirror_uv_axis = EnumProperty(
+        scene.muv_mirror_uv_axis: EnumProperty(
             items=[
                 ('X', "X", "Mirror Along X axis"),
                 ('Y', "Y", "Mirror Along Y axis"),
@@ -140,7 +140,7 @@ class MUV_OT_MirrorUV(bpy.types.Operator):
     bl_label = "Mirror UV"
     bl_options = {'REGISTER', 'UNDO'}
 
-    axis = EnumProperty(
+    axis: EnumProperty(
         items=(
             ('X', "X", "Mirror Along X axis"),
             ('Y', "Y", "Mirror Along Y axis"),
@@ -150,7 +150,7 @@ class MUV_OT_MirrorUV(bpy.types.Operator):
         description="Mirror Axis",
         default='X'
     )
-    error = FloatProperty(
+    error: FloatProperty(
         name="Error",
         description="Error threshold",
         default=0.001,
diff --git a/uv_magic_uv/op/move_uv.py b/uv_magic_uv/op/move_uv.py
index b747892a..7f94edfb 100644
--- a/uv_magic_uv/op/move_uv.py
+++ b/uv_magic_uv/op/move_uv.py
@@ -74,7 +74,7 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_move_uv_enabled = BoolProperty(
+        scene.muv_move_uv_enabled: BoolProperty(
             name="Move UV Enabled",
             description="Move UV is enabled",
             default=False
diff --git a/uv_magic_uv/op/pack_uv.py b/uv_magic_uv/op/pack_uv.py
index 35685221..4c365f8b 100644
--- a/uv_magic_uv/op/pack_uv.py
+++ b/uv_magic_uv/op/pack_uv.py
@@ -147,12 +147,12 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_pack_uv_enabled = BoolProperty(
+        scene.muv_pack_uv_enabled: BoolProperty(
             name="Pack UV Enabled",
             description="Pack UV is enabled",
             default=False
         )
-        scene.muv_pack_uv_allowable_center_deviation = FloatVectorProperty(
+        scene.muv_pack_uv_allowable_center_deviation: FloatVectorProperty(
             name="Allowable Center Deviation",
             description="Allowable center deviation to judge same UV island",
             min=0.000001,
@@ -160,7 +160,7 @@ class _Properties:
             default=(0.001, 0.001),
             size=2
         )
-        scene.muv_pack_uv_allowable_size_deviation = FloatVectorProperty(
+        scene.muv_pack_uv_allowable_size_deviation: FloatVectorProperty(
             name="Allowable Size Deviation",
             description="Allowable sizse deviation to judge same UV island",
             min=0.000001,
@@ -192,17 +192,17 @@ class MUV_OT_PackUV(bpy.types.Operator):
     bl_description = "Pack UV (Same UV Islands are integrated)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    rotate = BoolProperty(
+    rotate: BoolProperty(
         name="Rotate",
         description="Rotate option used by default pack UV function",
         default=False)
-    margin = FloatProperty(
+    margin: FloatProperty(
         name="Margin",
         description="Margin used by default pack UV function",
         min=0,
         max=1,
         default=0.001)
-    allowable_center_deviation = FloatVectorProperty(
+    allowable_center_deviation: FloatVectorProperty(
         name="Allowable Center Deviation",
         description="Allowable center deviation to judge same UV island",
         min=0.000001,
@@ -210,7 +210,7 @@ class MUV_OT_PackUV(bpy.types.Operator):
         default=(0.001, 0.001),
         size=2
     )
-    allowable_size_deviation = FloatVectorProperty(
+    allowable_size_deviation: FloatVectorProperty(
         name="Allowable Size Deviation",
         description="Allowable sizse deviation to judge same UV island",
         min=0.000001,
diff --git a/uv_magic_uv/op/preserve_uv_aspect.py b/uv_magic_uv/op/preserve_uv_aspect.py
index a200edac..244deb89 100644
--- a/uv_magic_uv/op/preserve_uv_aspect.py
+++ b/uv_magic_uv/op/preserve_uv_aspect.py
@@ -66,17 +66,17 @@ class _Properties:
             items.append(("None", "None", ""))
             return items
 
-        scene.muv_preserve_uv_aspect_enabled = BoolProperty(
+        scene.muv_preserve_uv_aspect_enabled: BoolProperty(
             name="Preserve UV Aspect Enabled",
             description="Preserve UV Aspect is enabled",
             default=False
         )
-        scene.muv_preserve_uv_aspect_tex_image = EnumProperty(
+        scene.muv_preserve_uv_aspect_tex_image: EnumProperty(
             name="Image",
             description="Texture Image",
             items=get_loaded_texture_name
         )
-        scene.muv_preserve_uv_aspect_origin = EnumProperty(
+        scene.muv_preserve_uv_aspect_origin: EnumProperty(
             name="Origin",
             description="Aspect Origin",
             items=[
@@ -113,8 +113,8 @@ class MUV_OT_PreserveUVAspect(bpy.types.Operator):
     bl_description = "Choose Image"
     bl_options = {'REGISTER', 'UNDO'}
 
-    dest_img_name = StringProperty(options={'HIDDEN'})
-    origin = EnumProperty(
+    dest_img_name: StringProperty(options={'HIDDEN'})
+    origin: EnumProperty(
         name="Origin",
         description="Aspect Origin",
         items=[
diff --git a/uv_magic_uv/op/select_uv.py b/uv_magic_uv/op/select_uv.py
index 4664551e..268843bf 100644
--- a/uv_magic_uv/op/select_uv.py
+++ b/uv_magic_uv/op/select_uv.py
@@ -61,7 +61,7 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_select_uv_enabled = BoolProperty(
+        scene.muv_select_uv_enabled: BoolProperty(
             name="Select UV Enabled",
             description="Select UV is enabled",
             default=False
diff --git a/uv_magic_uv/op/smooth_uv.py b/uv_magic_uv/op/smooth_uv.py
index 83a4a1a5..6b3cd36f 100644
--- a/uv_magic_uv/op/smooth_uv.py
+++ b/uv_magic_uv/op/smooth_uv.py
@@ -62,24 +62,24 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_smooth_uv_enabled = BoolProperty(
+        scene.muv_smooth_uv_enabled: BoolProperty(
             name="Smooth UV Enabled",
             description="Smooth UV is enabled",
             default=False
         )
-        scene.muv_smooth_uv_transmission = BoolProperty(
+        scene.muv_smooth_uv_transmission: BoolProperty(
             name="Transmission",
             description="Smooth linked UVs",
             default=False
         )
-        scene.muv_smooth_uv_mesh_infl = FloatProperty(
+        scene.muv_smooth_uv_mesh_infl: FloatProperty(
             name="Mesh Influence",
             description="Influence rate of mesh vertex",
             min=0.0,
             max=1.0,
             default=0.0
         )
-        scene.muv_smooth_uv_select = BoolProperty(
+        scene.muv_smooth_uv_select: BoolProperty(
             name="Select",
             description="Select UVs which are smoothed",
             default=False
@@ -102,19 +102,19 @@ class MUV_OT_SmoothUV(bpy.types.Operator):
     bl_description = "Smooth UV coordinates"
     bl_options = {'REGISTER', 'UNDO'}
 
-    transmission = BoolProperty(
+    transmission: BoolProperty(
         name="Transmission",
         description="Smooth linked UVs",
         default=False
     )
-    mesh_infl = FloatProperty(
+    mesh_infl: FloatProperty(
         name="Mesh Influence",
         description="Influence rate of mesh vertex",
         min=0.0,
         max=1.0,
         default=0.0
     )
-    select = BoolProperty(
+    select: BoolProperty(
         name="Select",
         description="Select UVs which are smoothed",
         default=False
diff --git a/uv_magic_uv/op/texture_lock.py b/uv_magic_uv/op/texture_lock.py
index f43a6fa9..6784cf54 100644
--- a/uv_magic_uv/op/texture_lock.py
+++ b/uv_magic_uv/op/texture_lock.py
@@ -228,12 +228,12 @@ class _Properties:
         def update_func(_, __):
             bpy.ops.uv.muv_texture_lock_operator_intr('INVOKE_REGION_WIN')
 
-        scene.muv_texture_lock_enabled = BoolProperty(
+        scene.muv_texture_lock_enabled: BoolProperty(
             name="Texture Lock Enabled",
             description="Texture Lock is enabled",
             default=False
         )
-        scene.muv_texture_lock_lock = BoolProperty(
+        scene.muv_texture_lock_lock: BoolProperty(
             name="Texture Lock Locked",
             description="Texture Lock is locked",
             default=False,
@@ -241,7 +241,7 @@ class _Properties:
             set=set_func,
             update=update_func
         )
-        scene.muv_texture_lock_connect = BoolProperty(
+        scene.muv_texture_lock_connect: BoolProperty(
             name="Connect UV",
             default=True
         )
@@ -312,7 +312,7 @@ class MUV_OT_TextureLock_Unlock(bpy.types.Operator):
     bl_description = "Unlock Texture"
     bl_options = {'REGISTER', 'UNDO'}
 
-    connect = BoolProperty(
+    connect: BoolProperty(
         name="Connect UV",
         default=True
     )
diff --git a/uv_magic_uv/op/texture_projection.py b/uv_magic_uv/op/texture_projection.py
index cb7c25bb..e807caee 100644
--- a/uv_magic_uv/op/texture_projection.py
+++ b/uv_magic_uv/op/texture_projection.py
@@ -158,12 +158,12 @@ class _Properties:
         def update_func(_, __):
             bpy.ops.uv.muv_texture_projection_operator('INVOKE_REGION_WIN')
 
-        scene.muv_texture_projection_enabled = BoolProperty(
+        scene.muv_texture_projection_enabled: BoolProperty(
             name="Texture Projection Enabled",
             description="Texture Projection is enabled",
             default=False
         )
-        scene.muv_texture_projection_enable = BoolProperty(
+        scene.muv_texture_projection_enable: BoolProperty(
             name="Texture Projection Enabled",
             description="Texture Projection is enabled",
             default=False,
@@ -171,36 +171,36 @@ class _Properties:
             set=set_func,
             update=update_func
         )
-        scene.muv_texture_projection_tex_magnitude = FloatProperty(
+        scene.muv_texture_projection_tex_magnitude: FloatProperty(
             name="Magnitude",
             description="Texture Magnitude",
             default=0.5,
             min=0.0,
             max=100.0
         )
-        scene.muv_texture_projection_tex_image = EnumProperty(
+        scene.muv_texture_projection_tex_image: EnumProperty(
             name="Image",
             description="Texture Image",
             items=get_loaded_texture_name
         )
-        scene.muv_texture_projection_tex_transparency = FloatProperty(
+        scene.muv_texture_projection_tex_transparency: FloatProperty(
             name="Transparency",
             description="Texture Transparency",
             default=0.2,
             min=0.0,
             max=1.0
         )
-        scene.muv_texture_projection_adjust_window = BoolProperty(
+        scene.muv_texture_projection_adjust_window: BoolProperty(
             name="Adjust Window",
             description="Size of renderered texture is fitted to window",
             default=True
         )
-        scene.muv_texture_projection_apply_tex_aspect = BoolProperty(
+        scene.muv_texture_projection_apply_tex_aspect: BoolProperty(
             name="Texture Aspect Ratio",
             description="Apply Texture Aspect ratio to displayed texture",
             default=True
         )
-        scene.muv_texture_projection_assign_uvmap = BoolProperty(
+        scene.muv_texture_projection_assign_uvmap: BoolProperty(
             name="Assign UVMap",
             description="Assign UVMap when no UVmaps are available",
             default=True
diff --git a/uv_magic_uv/op/texture_wrap.py b/uv_magic_uv/op/texture_wrap.py
index c78ffed9..2b4d5c2b 100644
--- a/uv_magic_uv/op/texture_wrap.py
+++ b/uv_magic_uv/op/texture_wrap.py
@@ -67,17 +67,17 @@ class _Properties:
 
         scene.muv_props.texture_wrap = Props()
 
-        scene.muv_texture_wrap_enabled = BoolProperty(
+        scene.muv_texture_wrap_enabled: BoolProperty(
             name="Texture Wrap",
             description="Texture Wrap is enabled",
             default=False
         )
-        scene.muv_texture_wrap_set_and_refer = BoolProperty(
+        scene.muv_texture_wrap_set_and_refer: BoolProperty(
             name="Set and Refer",
             description="Refer and set UV",
             default=True
         )
-        scene.muv_texture_wrap_selseq = BoolProperty(
+        scene.muv_texture_wrap_selseq: BoolProperty(
             name="Selection Sequence",
             description="Set UV sequentially",
             default=False
diff --git a/uv_magic_uv/op/transfer_uv.py b/uv_magic_uv/op/transfer_uv.py
index 25d430b9..079308ea 100644
--- a/uv_magic_uv/op/transfer_uv.py
+++ b/uv_magic_uv/op/transfer_uv.py
@@ -333,17 +333,17 @@ class _Properties:
 
         scene.muv_props.transfer_uv = Props()
 
-        scene.muv_transfer_uv_enabled = BoolProperty(
+        scene.muv_transfer_uv_enabled: BoolProperty(
             name="Transfer UV Enabled",
             description="Transfer UV is enabled",
             default=False
         )
-        scene.muv_transfer_uv_invert_normals = BoolProperty(
+        scene.muv_transfer_uv_invert_normals: BoolProperty(
             name="Invert Normals",
             description="Invert Normals",
             default=False
         )
-        scene.muv_transfer_uv_copy_seams = BoolProperty(
+        scene.muv_transfer_uv_copy_seams: BoolProperty(
             name="Copy Seams",
             description="Copy Seams",
             default=True
@@ -409,12 +409,12 @@ class MUV_OT_TransferUV_PasteUV(bpy.types.Operator):
     bl_description = "Transfer UV Paste UV (Topological based paste)"
     bl_options = {'REGISTER', 'UNDO'}
 
-    invert_normals = BoolProperty(
+    invert_normals: BoolProperty(
         name="Invert Normals",
         description="Invert Normals",
         default=False
     )
-    copy_seams = BoolProperty(
+    copy_seams: BoolProperty(
         name="Copy Seams",
         description="Copy Seams",
         default=True
diff --git a/uv_magic_uv/op/unwrap_constraint.py b/uv_magic_uv/op/unwrap_constraint.py
index 89727160..62b829cf 100644
--- a/uv_magic_uv/op/unwrap_constraint.py
+++ b/uv_magic_uv/op/unwrap_constraint.py
@@ -62,17 +62,17 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_unwrap_constraint_enabled = BoolProperty(
+        scene.muv_unwrap_constraint_enabled: BoolProperty(
             name="Unwrap Constraint Enabled",
             description="Unwrap Constraint is enabled",
             default=False
         )
-        scene.muv_unwrap_constraint_u_const = BoolProperty(
+        scene.muv_unwrap_constraint_u_const: BoolProperty(
             name="U-Constraint",
             description="Keep UV U-axis coordinate",
             default=False
         )
-        scene.muv_unwrap_constraint_v_const = BoolProperty(
+        scene.muv_unwrap_constraint_v_const: BoolProperty(
             name="V-Constraint",
             description="Keep UV V-axis coordinate",
             default=False
@@ -98,7 +98,7 @@ class MUV_OT_UnwrapConstraint(bpy.types.Operator):
     bl_options = {'REGISTER', 'UNDO'}
 
     # property for original unwrap
-    method = EnumProperty(
+    method: EnumProperty(
         name="Method",
         description="Unwrapping method",
         items=[
@@ -106,20 +106,20 @@ class MUV_OT_UnwrapConstraint(bpy.types.Operator):
             ('CONFORMAL', 'Conformal', 'Conformal')
         ],
         default='ANGLE_BASED')
-    fill_holes = BoolProperty(
+    fill_holes: BoolProperty(
         name="Fill Holes",
         description="Virtual fill holes in meshes before unwrapping",
         default=True)
-    correct_aspect = BoolProperty(
+    correct_aspect: BoolProperty(
         name="Correct Aspect",
         description="Map UVs taking image aspect ratio into account",
         default=True)
-    use_subsurf_data = BoolProperty(
+    use_subsurf_data: BoolProperty(
         name="Use Subsurf Modifier",
         description="""Map UVs taking vertex position after subsurf
                        into account""",
         default=False)
-    margin = FloatProperty(
+    margin: FloatProperty(
         name="Margin",
         description="Space between islands",
         max=1.0,
@@ -127,12 +127,12 @@ class MUV_OT_UnwrapConstraint(bpy.types.Operator):
         default=0.001)
 
     # property for this operation
-    u_const = BoolProperty(
+    u_const: BoolProperty(
         name="U-Constraint",
         description="Keep UV U-axis coordinate",
         default=False
     )
-    v_const = BoolProperty(
+    v_const: BoolProperty(
         name="V-Constraint",
         description="Keep UV V-axis coordinate",
         default=False
diff --git a/uv_magic_uv/op/uv_bounding_box.py b/uv_magic_uv/op/uv_bounding_box.py
index 4839934b..be687b54 100644
--- a/uv_magic_uv/op/uv_bounding_box.py
+++ b/uv_magic_uv/op/uv_bounding_box.py
@@ -90,12 +90,12 @@ class _Properties:
         def update_func(_, __):
             bpy.ops.uv.muv_uv_bounding_box_operator('INVOKE_REGION_WIN')
 
-        scene.muv_uv_bounding_box_enabled = BoolProperty(
+        scene.muv_uv_bounding_box_enabled: BoolProperty(
             name="UV Bounding Box Enabled",
             description="UV Bounding Box is enabled",
             default=False
         )
-        scene.muv_uv_bounding_box_show = BoolProperty(
+        scene.muv_uv_bounding_box_show: BoolProperty(
             name="UV Bounding Box Showed",
             description="UV Bounding Box is showed",
             default=False,
@@ -103,12 +103,12 @@ class _Properties:
             set=set_func,
             update=update_func
         )
-        scene.muv_uv_bounding_box_uniform_scaling = BoolProperty(
+        scene.muv_uv_bounding_box_uniform_scaling: BoolProperty(
             name="Uniform Scaling",
             description="Enable Uniform Scaling",
             default=False
         )
-        scene.muv_uv_bounding_box_boundary = EnumProperty(
+        scene.muv_uv_bounding_box_boundary: EnumProperty(
             name="Boundary",
             description="Boundary",
             default='UV_SEL',
diff --git a/uv_magic_uv/op/uv_inspection.py b/uv_magic_uv/op/uv_inspection.py
index 0978158d..b7868978 100644
--- a/uv_magic_uv/op/uv_inspection.py
+++ b/uv_magic_uv/op/uv_inspection.py
@@ -101,12 +101,12 @@ class _Properties:
         def update_func(_, __):
             bpy.ops.uv.muv_uv_inspection_operator_render('INVOKE_REGION_WIN')
 
-        scene.muv_uv_inspection_enabled = BoolProperty(
+        scene.muv_uv_inspection_enabled: BoolProperty(
             name="UV Inspection Enabled",
             description="UV Inspection is enabled",
             default=False
         )
-        scene.muv_uv_inspection_show = BoolProperty(
+        scene.muv_uv_inspection_show: BoolProperty(
             name="UV Inspection Showed",
             description="UV Inspection is showed",
             default=False,
@@ -114,17 +114,17 @@ class _Properties:
             set=set_func,
             update=update_func
         )
-        scene.muv_uv_inspection_show_overlapped = BoolProperty(
+        scene.muv_uv_inspection_show_overlapped: BoolProperty(
             name="Overlapped",
             description="Show overlapped UVs",
             default=False
         )
-        scene.muv_uv_inspection_show_flipped = BoolProperty(
+        scene.muv_uv_inspection_show_flipped: BoolProperty(
             name="Flipped",
             description="Show flipped UVs",
             default=False
         )
-        scene.muv_uv_inspection_show_mode = EnumProperty(
+        scene.muv_uv_inspection_show_mode: EnumProperty(
             name="Mode",
             description="Show mode",
             items=[
diff --git a/uv_magic_uv/op/uv_sculpt.py b/uv_magic_uv/op/uv_sculpt.py
index 7dc1b843..0de6df97 100644
--- a/uv_magic_uv/op/uv_sculpt.py
+++ b/uv_magic_uv/op/uv_sculpt.py
@@ -98,12 +98,12 @@ class _Properties:
         def update_func(_, __):
             bpy.ops.uv.muv_uv_sculpt_operator('INVOKE_REGION_WIN')
 
-        scene.muv_uv_sculpt_enabled = BoolProperty(
+        scene.muv_uv_sculpt_enabled: BoolProperty(
             name="UV Sculpt",
             description="UV Sculpt is enabled",
             default=False
         )
-        scene.muv_uv_sculpt_enable = BoolProperty(
+        scene.muv_uv_sculpt_enable: BoolProperty(
             name="UV Sculpt Showed",
             description="UV Sculpt is enabled",
             default=False,
@@ -111,21 +111,21 @@ class _Properties:
             set=set_func,
             update=update_func
         )
-        scene.muv_uv_sculpt_radius = IntProperty(
+        scene.muv_uv_sculpt_radius: IntProperty(
             name="Radius",
             description="Radius of the brush",
             min=1,
             max=500,
             default=30
         )
-        scene.muv_uv_sculpt_strength = FloatProperty(
+        scene.muv_uv_sculpt_strength: FloatProperty(
             name="Strength",
             description="How powerful the effect of the brush when applied",
             min=0.0,
             max=1.0,
             default=0.03,
         )
-        scene.muv_uv_sculpt_tools = EnumProperty(
+        scene.muv_uv_sculpt_tools: EnumProperty(
             name="Tools",
             description="Select Tools for the UV sculpt brushes",
             items=[
@@ -135,17 +135,17 @@ class _Properties:
             ],
             default='GRAB'
         )
-        scene.muv_uv_sculpt_show_brush = BoolProperty(
+        scene.muv_uv_sculpt_show_brush: BoolProperty(
             name="Show Brush",
             description="Show Brush",
             default=True
         )
-        scene.muv_uv_sculpt_pinch_invert = BoolProperty(
+        scene.muv_uv_sculpt_pinch_invert: BoolProperty(
             name="Invert",
             description="Pinch UV to invert direction",
             default=False
         )
-        scene.muv_uv_sculpt_relax_method = EnumProperty(
+        scene.muv_uv_sculpt_relax_method: EnumProperty(
             name="Method",
             description="Algorithm used for relaxation",
             items=[
diff --git a/uv_magic_uv/op/uvw.py b/uv_magic_uv/op/uvw.py
index 9b44100c..28011777 100644
--- a/uv_magic_uv/op/uvw.py
+++ b/uv_magic_uv/op/uvw.py
@@ -175,12 +175,12 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_uvw_enabled = BoolProperty(
+        scene.muv_uvw_enabled: BoolProperty(
             name="UVW Enabled",
             description="UVW is enabled",
             default=False
         )
-        scene.muv_uvw_assign_uvmap = BoolProperty(
+        scene.muv_uvw_assign_uvmap: BoolProperty(
             name="Assign UVMap",
             description="Assign UVMap when no UVmaps are available",
             default=True
@@ -199,27 +199,27 @@ class MUV_OT_UVW_BoxMap(bpy.types.Operator):
     bl_label = "Box Map"
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = FloatProperty(
+    size: FloatProperty(
         name="Size",
         default=1.0,
         precision=4
     )
-    rotation = FloatVectorProperty(
+    rotation: FloatVectorProperty(
         name="XYZ Rotation",
         size=3,
         default=(0.0, 0.0, 0.0)
     )
-    offset = FloatVectorProperty(
+    offset: FloatVectorProperty(
         name="XYZ Offset",
         size=3,
         default=(0.0, 0.0, 0.0)
     )
-    tex_aspect = FloatProperty(
+    tex_aspect: FloatProperty(
         name="Texture Aspect",
         default=1.0,
         precision=4
     )
-    assign_uvmap = BoolProperty(
+    assign_uvmap: BoolProperty(
         name="Assign UVMap",
         description="Assign UVMap when no UVmaps are available",
         default=True
@@ -257,26 +257,26 @@ class MUV_OT_UVW_BestPlanerMap(bpy.types.Operator):
     bl_label = "Best Planer Map"
     bl_options = {'REGISTER', 'UNDO'}
 
-    size = FloatProperty(
+    size: FloatProperty(
         name="Size",
         default=1.0,
         precision=4
     )
-    rotation = FloatProperty(
+    rotation: FloatProperty(
         name="XY Rotation",
         default=0.0
     )
-    offset = FloatVectorProperty(
+    offset: FloatVectorProperty(
         name="XY Offset",
         size=2,
         default=(0.0, 0.0)
     )
-    tex_aspect = FloatProperty(
+    tex_aspect: FloatProperty(
         name="Texture Aspect",
         default=1.0,
         precision=4
     )
-    assign_uvmap = BoolProperty(
+    assign_uvmap: BoolProperty(
         name="Assign UVMap",
         description="Assign UVMap when no UVmaps are available",
         default=True
diff --git a/uv_magic_uv/op/world_scale_uv.py b/uv_magic_uv/op/world_scale_uv.py
index ae46e4a9..f060dad8 100644
--- a/uv_magic_uv/op/world_scale_uv.py
+++ b/uv_magic_uv/op/world_scale_uv.py
@@ -183,36 +183,36 @@ class _Properties:
 
     @classmethod
     def init_props(cls, scene):
-        scene.muv_world_scale_uv_enabled = BoolProperty(
+        scene.muv_world_scale_uv_enabled: BoolProperty(
             name="World Scale UV Enabled",
             description="World Scale UV is enabled",
             default=False
         )
-        scene.muv_world_scale_uv_src_mesh_area = FloatProperty(
+        scene.muv_world_scale_uv_src_mesh_area: FloatProperty(
             name="Mesh Area",
             description="Source Mesh Area",
             default=0.0,
             min=0.0
         )
-        scene.muv_world_scale_uv_src_uv_area = FloatProperty(
+        scene.muv_world_scale_uv_src_uv_area: FloatProperty(
             name="UV Area",
             description="Source UV Area",
             default=0.0,
             min=0.0
         )
-        scene.muv_world_scale_uv_src_density = FloatProperty(
+        scene.muv_world_scale_uv_src_density: FloatProperty(
             name="Density",
             description="Source Texel Density",
             default=0.0,
             min=0.0
         )
-        scene.muv_world_scale_uv_tgt_density = FloatProperty(
+        scene.muv_world_scale_uv_tgt_density: FloatProperty(
             name="Density",
             description="Target Texel Density",
             default=0.0,
             min=0.0
         )
-        scene.muv_world_scale_uv_tgt_scaling_factor = FloatProperty(
+        scene.muv_world_scale_uv_tgt_scaling_factor: FloatProperty(
             name="Scaling Factor",
             default=1.0,
             max=1000.0,
@@ -225,7 +225,7 @@ class _Properties:
             soft_max=10240,
             default=(1024, 1024),
         )
-        scene.muv_world_scale_uv_mode = EnumProperty(
+        scene.muv_world_scale_uv_mode: EnumProperty(
             name="Mode",
             description="Density calculation mode",
             items=[
@@ -239,7 +239,7 @@ class _Properties:
             ],
             default='MANUAL'
         )
-        scene.muv_world_scale_uv_origin = EnumProperty(
+        scene.muv_world_scale_uv_origin: EnumProperty(
             name="Origin",
             description="Aspect Origin",
             items=[
@@ -319,7 +319,7 @@ class MUV_OT_WorldScaleUV_ApplyManual(bpy.types.Operator):
     bl_description = "Apply scaled UV based on user specification"
     bl_options = {'REGISTER', 'UNDO'}
 
-    tgt_density = FloatProperty(
+    tgt_density: FloatProperty(
         name="Density",
         description="Target Texel Density",
         default=1.0,
@@ -332,7 +332,7 @@ class MUV_OT_WorldScaleUV_ApplyManual(bpy.types.Operator):
         soft_max=10240,
         default=(1024, 1024),
     )
-    origin = EnumProperty(
+    origin: EnumProperty(
         name="Origin",
         description="Aspect Origin",
         items=[
@@ -349,7 +349,7 @@ class MUV_OT_WorldScaleUV_ApplyManual(bpy.types.Operator):
         ],
         default='CENTER'
     )
-    show_dialog = BoolProperty(
+    show_dialog: BoolProperty(
         name="Show Diaglog Menu",
         description="Show dialog menu if true",
         default=True,
@@ -417,13 +417,13 @@ class MUV_OT_WorldScaleUV_ApplyScalingDensity(bpy.types.Operator):
     bl_description = "Apply scaled UV with scaling density"
     bl_options = {'REGISTER', 'UNDO'}
 
-    tgt_scaling_factor = FloatProperty(
+    tgt_scaling_factor: FloatProperty(
         name="Scaling Factor",
         default=1.0,
         max=1000.0,
         min=0.00001
     )
-    origin = EnumProperty(
+    origin: EnumProperty(
         name="Origin",
         description="Aspect Origin",
         items=[
@@ -440,20 +440,20 @@ class MUV_OT_WorldScaleUV_ApplyScalingDensity(bpy.types.Operator):
         ],
         default='CENTER'
     )
-    src_density = FloatProperty(
+    src_density: FloatProperty(
         name="Density",
         description="Source Texel Density",
         default=0.0,
         min=0.0,
         options={'HIDDEN'}
     )
-    same_density = BoolProperty(
+    same_density: BoolProperty(
         name="Same Density",
         description="Apply same density",
         default=False,
         options={'HIDDEN'}
     )
-    show_dialog = BoolProperty(
+    show_dialog: BoolProperty(
         name="Show Diaglog Menu",
         description="Show dialog menu if true",
         default=True,
@@ -541,7 +541,7 @@ class MUV_OT_WorldScaleUV_ApplyProportionalToMesh(bpy.types.Operator):
     bl_description = "Apply scaled UV proportionaled to mesh"
     bl_options = {'REGISTER', 'UNDO'}
 
-    origin = EnumProperty(
+    origin: EnumProperty(
         name="Origin",
         description="Aspect Origin",
         items=[
@@ -558,28 +558,28 @@ class MUV_OT_WorldScaleUV_ApplyProportionalToMesh(bpy.types.Operator):
         ],
         default='CENTER'
     )
-    src_density = FloatProperty(
+    src_density: FloatProperty(
         name="Source Density",
         description="Source Texel Density",
         default=0.0,
         min=0.0,
         options={'HIDDEN'}
     )
-    src_uv_area = FloatProperty(
+    src_uv_area: FloatProperty(
         name="Source UV Area",
         description="Source UV Area",
         default=0.0,
         min=0.0,
         options={'HIDDEN'}
     )
-    src_mesh_area = FloatProperty(
+    src_mesh_area: FloatProperty(
         name="Source Mesh Area",
         description="Source Mesh Area",
         default=0.0,
         min=0.0,
         options={'HIDDEN'}
     )
-    show_dialog = BoolProperty(
+    show_dialog: BoolProperty(
         name="Show Diaglog Menu",
         description="Show dialog menu if true",
         default=True,
diff --git a/uv_magic_uv/preferences.py b/uv_magic_uv/preferences.py
index 01d7155e..19715044 100644
--- a/uv_magic_uv/preferences.py
+++ b/uv_magic_uv/preferences.py
@@ -178,7 +178,7 @@ class MUV_OT_UpdateAddon(bpy.types.Operator):
     bl_description = "Update Add-on"
     bl_options = {'REGISTER', 'UNDO'}
 
-    branch_name = StringProperty(
+    branch_name: StringProperty(
         name="Branch Name",
         description="Branch name to update",
         default="",
@@ -213,7 +213,7 @@ class Preferences(AddonPreferences):
             remove_builtin_menu()
 
     # enable to add features to built-in menu
-    enable_builtin_menu = BoolProperty(
+    enable_builtin_menu: BoolProperty(
         name="Built-in Menu",
         description="Enable built-in menu",
         default=True,
@@ -221,7 +221,7 @@ class Preferences(AddonPreferences):
     )
 
     # for UV Sculpt
-    uv_sculpt_brush_color = FloatVectorProperty(
+    uv_sculpt_brush_color: FloatVectorProperty(
         name="Color",
         description="Color",
         default=(1.0, 0.4, 0.4, 1.0),
@@ -232,7 +232,7 @@ class Preferences(AddonPreferences):
     )
 
     # for Overlapped UV
-    uv_inspection_overlapped_color = FloatVectorProperty(
+    uv_inspection_overlapped_color: FloatVectorProperty(
         name="Color",
         description="Color",
         default=(0.0, 0.0, 1.0, 0.3),
@@ -243,7 +243,7 @@ class Preferences(AddonPreferences):
     )
 
     # for Flipped UV
-    uv_inspection_flipped_color = FloatVectorProperty(
+    uv_inspection_flipped_color: FloatVectorProperty(
         name="Color",
         description="Color",
         default=(1.0, 0.0, 0.0, 0.3),
@@ -254,7 +254,7 @@ class Preferences(AddonPreferences):
     )
 
     # for Texture Projection
-    texture_projection_canvas_padding = FloatVectorProperty(
+    texture_projection_canvas_padding: FloatVectorProperty(
         name="Canvas Padding",
         description="Canvas Padding",
         size=2,
@@ -263,13 +263,13 @@ class Preferences(AddonPreferences):
         default=(20.0, 20.0))
 
     # for UV Bounding Box
-    uv_bounding_box_cp_size = FloatProperty(
+    uv_bounding_box_cp_size: FloatProperty(
         name="Size",
         description="Control Point Size",
         default=6.0,
         min=3.0,
         max=100.0)
-    uv_bounding_box_cp_react_size = FloatProperty(
+    uv_bounding_box_cp_react_size: FloatProperty(
         name="React Size",
         description="Size event fired",
         default=10.0,
@@ -277,7 +277,7 @@ class Preferences(AddonPreferences):
         max=100.0)
 
     # for UI
-    category = EnumProperty(
+    category: EnumProperty(
         name="Category",
         description="Preferences Category",
         items=[
@@ -287,39 +287,39 @@ class Preferences(AddonPreferences):
         ],
         default='INFO'
     )
-    info_desc_expanded = BoolProperty(
+    info_desc_expanded: BoolProperty(
         name="Description",
         description="Description",
         default=False
     )
-    info_loc_expanded = BoolProperty(
+    info_loc_expanded: BoolProperty(
         name="Location",
         description="Location",
         default=False
     )
-    conf_uv_sculpt_expanded = BoolProperty(
+    conf_uv_sculpt_expanded: BoolProperty(
         name="UV Sculpt",
         description="UV Sculpt",
         default=False
     )
-    conf_uv_inspection_expanded = BoolProperty(
+    conf_uv_inspection_expanded: BoolProperty(
         name="UV Inspection",
         description="UV Inspection",
         default=False
     )
-    conf_texture_projection_expanded = BoolProperty(
+    conf_texture_projection_expanded: BoolProperty(
         name="Texture Projection",
         description="Texture Projection",
         default=False
     )
-    conf_uv_bounding_box_expanded = BoolProperty(
+    conf_uv_bounding_box_expanded: BoolProperty(
         name="UV Bounding Box",
         description="UV Bounding Box",
         default=False
     )
 
     # for add-on updater
-    updater_branch_to_update = EnumProperty(
+    updater_branch_to_update: EnumProperty(
         name="branch",
         description="Target branch to update add-on",
         items=get_update_candidate_branches
diff --git a/uv_texture_atlas.py b/uv_texture_atlas.py
index b3bc1ec6..9902aa34 100644
--- a/uv_texture_atlas.py
+++ b/uv_texture_atlas.py
@@ -275,30 +275,30 @@ class TexAtl_RunFinish(Operator):
 
 
 class TexAtl_UVLayers(PropertyGroup):
-    name = StringProperty(default="")
+    name: StringProperty(default="")
 
 
 class TexAtl_VertexGroups(PropertyGroup):
-    name = StringProperty(default="")
+    name: StringProperty(default="")
 
 
 class TexAtl_Groups(PropertyGroup):
-    name = StringProperty(default="")
+    name: StringProperty(default="")
 
 
 class TexAtl_MSLightmapGroups(PropertyGroup):
 
-    name = StringProperty(default="")
-    bake = BoolProperty(default=True)
+    name: StringProperty(default="")
+    bake: BoolProperty(default=True)
 
-    unwrap_type = EnumProperty(
+    unwrap_type: EnumProperty(
         name="unwrap_type",
         items=(('0', 'Smart_Unwrap', 'Smart_Unwrap'),
                ('1', 'Lightmap', 'Lightmap'),
                ('2', 'No_Unwrap', 'No_Unwrap'),
                ),
     )
-    resolutionX = EnumProperty(
+    resolutionX: EnumProperty(
         name="resolutionX",
         items=(('256', '256', ''),
                ('512', '512', ''),
@@ -310,7 +310,7 @@ class TexAtl_MSLightmapGroups(PropertyGroup):
                ),
         default='1024'
     )
-    resolutionY = EnumProperty(
+    resolutionY: EnumProperty(
         name="resolutionY",
         items=(('256', '256', ''),
                ('512', '512', ''),
@@ -322,25 +322,25 @@ class TexAtl_MSLightmapGroups(PropertyGroup):
                ),
         default='1024'
     )
-    autoUnwrapPrecision = FloatProperty(
+    autoUnwrapPrecision: FloatProperty(
         name="autoUnwrapPrecision",
         default=0.01,
         min=0.001,
         max=10
     )
-    template_list_controls = StringProperty(
+    template_list_controls: StringProperty(
         default="bake",
         options={"HIDDEN"},
     )
 
 
 class TexAtl_MergedObjects(PropertyGroup):
-    name = StringProperty()
-    vertex_groups = CollectionProperty(
+    name: StringProperty()
+    vertex_groups: CollectionProperty(
         type=TexAtl_VertexGroups,
     )
-    groups = CollectionProperty(type=TexAtl_Groups)
-    uv_layers = CollectionProperty(type=TexAtl_UVLayers)
+    groups: CollectionProperty(type=TexAtl_Groups)
+    uv_layers: CollectionProperty(type=TexAtl_UVLayers)
 
 
 class TexAtl_AddSelectedToGroup(Operator):
@@ -478,7 +478,7 @@ class TexAtl_AddLightmapGroup(Operator):
     bl_label = "add Lightmap"
     bl_description = "Adds a new Lightmap Group"
 
-    name = StringProperty(name="Group Name", default='TextureAtlas')
+    name: StringProperty(name="Group Name", default='TextureAtlas')
 
     def execute(self, context):
         scene = context.scene
@@ -537,9 +537,9 @@ class TexAtl_CreateLightmap(Operator):
     bl_label = "TextureAtlas - Generate Lightmap"
     bl_description = "Generates a Lightmap"
 
-    group_name = StringProperty(default='')
-    resolutionX = IntProperty(default=1024)
-    resolutionY = IntProperty(default=1024)
+    group_name: StringProperty(default='')
+    resolutionX: IntProperty(default=1024)
+    resolutionY: IntProperty(default=1024)
 
     def execute(self, context):
         scene = context.scene
@@ -598,8 +598,8 @@ class TexAtl_MergeObjects(Operator):
     bl_label = "TextureAtlas - TexAtl_MergeObjects"
     bl_description = "Merges Objects and stores Origins"
 
-    group_name = StringProperty(default='')
-    unwrap = BoolProperty(default=False)
+    group_name: StringProperty(default='')
+    unwrap: BoolProperty(default=False)
 
     def execute(self, context):
         scene = context.scene
@@ -733,7 +733,7 @@ class TexAtl_SeparateObjects(Operator):
     bl_label = "TextureAtlas - Separate Objects"
     bl_description = "Separates Objects and restores Origin"
 
-    group_name = StringProperty(default='')
+    group_name: StringProperty(default='')
 
     def execute(self, context):
         scene = context.scene