fix spelling mistakes in comments (and in some python error messages), nothing to effect translations.

32 files changed, 39 insertions, 39 deletions

diff --git a/source/blender/blenkernel/BKE_animsys.h b/source/blender/blenkernel/BKE_animsys.h
index bf619d76e68..cf49c479fe3 100644
--- a/source/blender/blenkernel/BKE_animsys.h
+++ b/source/blender/blenkernel/BKE_animsys.h
@@ -146,7 +146,7 @@ void BKE_animsys_evaluate_animdata(struct Scene *scene, struct ID *id, struct An
 void BKE_animsys_evaluate_all_animation(struct Main *main, struct Scene *scene, float ctime);
 
 
-/* ------------ Specialised API --------------- */
+/* ------------ Specialized API --------------- */
 /* There are a few special tools which require these following functions. They are NOT to be used
  * for standard animation evaluation UNDER ANY CIRCUMSTANCES! 
  *
diff --git a/source/blender/blenkernel/BKE_utildefines.h b/source/blender/blenkernel/BKE_utildefines.h
index 87684e4895d..f65b937a54b 100644
--- a/source/blender/blenkernel/BKE_utildefines.h
+++ b/source/blender/blenkernel/BKE_utildefines.h
@@ -29,7 +29,7 @@
 
 /** \file BKE_utildefines.h
  *  \ingroup bke
- *  \brief blender format spesific macros
+ *  \brief blender format specific macros
  *  \note generic defines should go in BLI_utildefines.h
  */
 
diff --git a/source/blender/blenkernel/intern/cloth.c b/source/blender/blenkernel/intern/cloth.c
index 1ec573c853a..260b51bc321 100644
--- a/source/blender/blenkernel/intern/cloth.c
+++ b/source/blender/blenkernel/intern/cloth.c
@@ -974,7 +974,7 @@ static void cloth_from_mesh ( ClothModifierData *clmd, DerivedMesh *dm )
 * SPRING NETWORK BUILDING IMPLEMENTATION BEGIN
 ***************************************************************************************/
 
-// be carefull: implicit solver has to be resettet when using this one!
+// be careful: implicit solver has to be resettet when using this one!
 // --> only for implicit handling of this spring!
 int cloth_add_spring ( ClothModifierData *clmd, unsigned int indexA, unsigned int indexB, float restlength, int spring_type)
 {
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c
index e2326b005c1..0303f580e67 100644
--- a/source/blender/blenkernel/intern/fcurve.c
+++ b/source/blender/blenkernel/intern/fcurve.c
@@ -705,7 +705,7 @@ void bezt_add_to_cfra_elem (ListBase *lb, BezTriple *bezt)
 
 /* ***************************** Samples Utilities ******************************* */
 /* Some utilities for working with FPoints (i.e. 'sampled' animation curve data, such as
- * data imported from BVH/Mocap files), which are specialised for use with high density datasets,
+ * data imported from BVH/Mocap files), which are specialized for use with high density datasets,
  * which BezTriples/Keyframe data are ill equipped to do.
  */
  
diff --git a/source/blender/blenkernel/intern/seqeffects.c b/source/blender/blenkernel/intern/seqeffects.c
index d8d6ed6ea6d..943066537d5 100644
--- a/source/blender/blenkernel/intern/seqeffects.c
+++ b/source/blender/blenkernel/intern/seqeffects.c
@@ -827,7 +827,7 @@ static void do_cross_effect_float(float facf0, float facf1, int x, int y,
 	}
 }
 
-/* carefull: also used by speed effect! */
+/* careful: also used by speed effect! */
 
 static struct ImBuf* do_cross_effect(
 	SeqRenderData context, Sequence *UNUSED(seq), float UNUSED(cfra),
diff --git a/source/blender/blenkernel/intern/softbody.c b/source/blender/blenkernel/intern/softbody.c
index 88f72c33802..65b4a21d0ee 100644
--- a/source/blender/blenkernel/intern/softbody.c
+++ b/source/blender/blenkernel/intern/softbody.c
@@ -2818,7 +2818,7 @@ static void softbody_calc_forces(Scene *scene, Object *ob, float forcetime, floa
 		if (ob->softflag & OB_SB_FACECOLL) scan_for_ext_face_forces(ob,timenow);
 
 		/* finish matrix and solve */
-#if (0) // remove onl linking for now .. still i am not sure .. the jacobian can be usefull .. so keep that BM
+#if (0) // remove onl linking for now .. still i am not sure .. the jacobian can be useful .. so keep that BM
 		if(nl_flags & NLF_SOLVE){
 			//double sct,sst=PIL_check_seconds_timer();
 			for(a=sb->totpoint, bp= sb->bpoint; a>0; a--, bp++) {
@@ -3540,7 +3540,7 @@ static void lattice_to_softbody(Scene *scene, Object *ob)
 		}
 	}
 
-	/* create some helper edges to enable SB lattice to be usefull at all */
+	/* create some helper edges to enable SB lattice to be useful at all */
 	if (ob->softflag & OB_SB_EDGES){
 		makelatticesprings(lt,ob->soft->bspring,ob->softflag & OB_SB_QUADS,ob);
 		build_bps_springlist(ob); /* link bps to springs */
diff --git a/source/blender/blenlib/intern/path_util.c b/source/blender/blenlib/intern/path_util.c
index fe1d869f898..21f91ce8f14 100644
--- a/source/blender/blenlib/intern/path_util.c
+++ b/source/blender/blenlib/intern/path_util.c
@@ -1681,7 +1681,7 @@ void BLI_where_am_i(char *fullname, const size_t maxlen, const char *name)
 
 	
 #ifdef WITH_BINRELOC
-	/* linux uses binreloc since argv[0] is not relyable, call br_init( NULL ) first */
+	/* linux uses binreloc since argv[0] is not reliable, call br_init( NULL ) first */
 	path = br_find_exe( NULL );
 	if (path) {
 		BLI_strncpy(fullname, path, maxlen);
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 84b9021d080..dfaf96a6066 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -13303,7 +13303,7 @@ static void give_base_to_objects(Main *mainvar, Scene *sce, Library *lib, const
 		if( ob->id.flag & LIB_INDIRECT ) {
 			
 				/* IF below is quite confusing!
-				if we are appending, but this object wasnt just added allong with a group,
+				if we are appending, but this object wasnt just added along with a group,
 				then this is already used indirectly in the scene somewhere else and we didnt just append it.
 				
 				(ob->id.flag & LIB_PRE_EXISTING)==0 means that this is a newly appended object - Campbell */
diff --git a/source/blender/editors/animation/anim_channels_edit.c b/source/blender/editors/animation/anim_channels_edit.c
index 7f05a7c2b1a..b4a86e5d74c 100644
--- a/source/blender/editors/animation/anim_channels_edit.c
+++ b/source/blender/editors/animation/anim_channels_edit.c
@@ -2447,7 +2447,7 @@ void ED_keymap_animchannels(wmKeyConfig *keyconf)
 	WM_keymap_add_item(keymap, "ANIM_OT_channels_setting_enable", WKEY, KM_PRESS, KM_CTRL|KM_SHIFT, 0);
 	WM_keymap_add_item(keymap, "ANIM_OT_channels_setting_disable", WKEY, KM_PRESS, KM_ALT, 0);
 	
-	/* settings - specialised hotkeys */
+	/* settings - specialized hotkeys */
 	WM_keymap_add_item(keymap, "ANIM_OT_channels_editable_toggle", TABKEY, KM_PRESS, 0, 0);
 	
 	/* expand/collapse */
diff --git a/source/blender/editors/include/ED_anim_api.h b/source/blender/editors/include/ED_anim_api.h
index 3c810f7da2d..0ac5a9e46ce 100644
--- a/source/blender/editors/include/ED_anim_api.h
+++ b/source/blender/editors/include/ED_anim_api.h
@@ -123,7 +123,7 @@ typedef struct bAnimListElem {
 
 
 /* Some types for easier type-testing 
- * NOTE: need to keep the order of these synchronised with the channels define code
+ * NOTE: need to keep the order of these synchronized with the channels define code
  * 		which is used for drawing and handling channel lists for 
  */
 typedef enum eAnim_ChannelType {
diff --git a/source/blender/editors/mesh/editmesh_lib.c b/source/blender/editors/mesh/editmesh_lib.c
index 02b5250f67a..8945cac428b 100644
--- a/source/blender/editors/mesh/editmesh_lib.c
+++ b/source/blender/editors/mesh/editmesh_lib.c
@@ -337,7 +337,7 @@ void EM_editselection_normal(float *normal, EditSelection *ese)
 }
 
 /* Calculate a plane that is rightangles to the edge/vert/faces normal
-also make the plane run allong an axis that is related to the geometry,
+also make the plane run along an axis that is related to the geometry,
 because this is used for the manipulators Y axis.*/
 void EM_editselection_plane(float *plane, EditSelection *ese)
 {
@@ -345,7 +345,7 @@ void EM_editselection_plane(float *plane, EditSelection *ese)
 		EditVert *eve= ese->data;
 		float vec[3]={0,0,0};
 		
-		if (ese->prev) { /*use previously selected data to make a usefull vertex plane */
+		if (ese->prev) { /*use previously selected data to make a useful vertex plane */
 			EM_editselection_center(vec, ese->prev);
 			sub_v3_v3v3(plane, vec, eve->co);
 		} else {
@@ -361,7 +361,7 @@ void EM_editselection_plane(float *plane, EditSelection *ese)
 	} else if (ese->type==EDITEDGE) {
 		EditEdge *eed= ese->data;
 
-		/*the plane is simple, it runs allong the edge
+		/*the plane is simple, it runs along the edge
 		however selecting different edges can swap the direction of the y axis.
 		this makes it less likely for the y axis of the manipulator
 		(running along the edge).. to flip less often.
diff --git a/source/blender/editors/mesh/meshtools.c b/source/blender/editors/mesh/meshtools.c
index 526bf177ab7..e6836d7d5aa 100644
--- a/source/blender/editors/mesh/meshtools.c
+++ b/source/blender/editors/mesh/meshtools.c
@@ -957,7 +957,7 @@ long mesh_mirrtopo_table(Object *ob, char mode)
 				}
 			} else {
 				for(a=0, medge=me->medge; a<me->totedge; a++, medge++) {
-					/* This can make realy big numbers, wrapping around here is fine */
+					/* This can make really big numbers, wrapping around here is fine */
 					MirrTopoHash[medge->v1] += MirrTopoHash_Prev[medge->v2];
 					MirrTopoHash[medge->v2] += MirrTopoHash_Prev[medge->v1];
 				}
diff --git a/source/blender/editors/physics/particle_edit.c b/source/blender/editors/physics/particle_edit.c
index 019d6df9b73..740fd5137de 100644
--- a/source/blender/editors/physics/particle_edit.c
+++ b/source/blender/editors/physics/particle_edit.c
@@ -2970,7 +2970,7 @@ static void brush_puff(PEData *data, int point_index)
 						VECSUB(dco, lastco, co);
 						mul_mat3_m4_v3(imat, dco); /* into particle space */
 
-						/* move the point allong a vector perpendicular to the
+						/* move the point along a vector perpendicular to the
 						 * hairs direction, reduces odd kinks, */
 						cross_v3_v3v3(c1, ofs, dco);
 						cross_v3_v3v3(c2, c1, dco);
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index 9842bc0e1ee..c5af8971907 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -3387,7 +3387,7 @@ static void project_paint_end(ProjPaintState *ps)
 					}
 					
 					/* This is a BIT ODD, but overwrite the undo tiles image info with this pixels original color
-					 * because allocating the tiles allong the way slows down painting */
+					 * because allocating the tiles along the way slows down painting */
 					
 					if (is_float) {
 						float *rgba_fp = (float *)tilerect + (((projPixel->x_px - x_round) + (projPixel->y_px - y_round) * IMAPAINT_TILE_SIZE)) * 4;
diff --git a/source/blender/editors/space_outliner/outliner_edit.c b/source/blender/editors/space_outliner/outliner_edit.c
index 6bfe370d105..1d1abf80fe4 100644
--- a/source/blender/editors/space_outliner/outliner_edit.c
+++ b/source/blender/editors/space_outliner/outliner_edit.c
@@ -947,7 +947,7 @@ void OUTLINER_OT_show_hierarchy(wmOperatorType *ot)
 /* ANIMATO OPERATIONS */
 /* KeyingSet and Driver Creation - Helper functions */
 
-/* specialised poll callback for these operators to work in Datablocks view only */
+/* specialized poll callback for these operators to work in Datablocks view only */
 static int ed_operator_outliner_datablocks_active(bContext *C)
 {
 	ScrArea *sa= CTX_wm_area(C);
diff --git a/source/blender/editors/space_sequencer/sequencer_select.c b/source/blender/editors/space_sequencer/sequencer_select.c
index 7e718dc176a..53a520a355d 100644
--- a/source/blender/editors/space_sequencer/sequencer_select.c
+++ b/source/blender/editors/space_sequencer/sequencer_select.c
@@ -530,7 +530,7 @@ void SEQUENCER_OT_select(wmOperatorType *ot)
 
 
 
-/* run recursivly to select linked */
+/* run recursively to select linked */
 static int select_more_less_seq__internal(Scene *scene, int sel, int linked)
 {
 	Editing *ed= seq_give_editing(scene, FALSE);
diff --git a/source/blender/editors/space_view3d/view3d_edit.c b/source/blender/editors/space_view3d/view3d_edit.c
index 0854f9f3685..115b3756029 100644
--- a/source/blender/editors/space_view3d/view3d_edit.c
+++ b/source/blender/editors/space_view3d/view3d_edit.c
@@ -450,7 +450,7 @@ static void viewops_data_create(bContext *C, wmOperator *op, wmEvent *event)
 				sub_v3_v3v3(my_pivot, rv3d->ofs, upvec);
 				negate_v3(my_pivot);				/* ofs is flipped */
 
-				/* find a new ofs value that is allong the view axis (rather than the mouse location) */
+				/* find a new ofs value that is along the view axis (rather than the mouse location) */
 				closest_to_line_v3(dvec, vod->dyn_ofs, my_pivot, my_origin);
 				vod->dist0 = rv3d->dist = len_v3v3(my_pivot, dvec);
 
diff --git a/source/blender/editors/space_view3d/view3d_fly.c b/source/blender/editors/space_view3d/view3d_fly.c
index 02a6cee5140..b66440738b2 100644
--- a/source/blender/editors/space_view3d/view3d_fly.c
+++ b/source/blender/editors/space_view3d/view3d_fly.c
@@ -179,7 +179,7 @@ typedef struct FlyInfo {
 
 	/* fly state state */
 	float speed; /* the speed the view is moving per redraw */
-	short axis; /* Axis index to move allong by default Z to move allong the view */
+	short axis; /* Axis index to move along by default Z to move along the view */
 	short pan_view; /* when true, pan the view instead of rotating */
 
 	/* relative view axis locking - xlock, zlock
@@ -725,7 +725,7 @@ static int flyApply(bContext *C, FlyInfo *fly)
 	RegionView3D *rv3d= fly->rv3d;
 	ARegion *ar = fly->ar;
 
-	float mat[3][3], /* 3x3 copy of the view matrix so we can move allong the view axis */
+	float mat[3][3], /* 3x3 copy of the view matrix so we can move along the view axis */
 	dvec[3]={0,0,0}, /* this is the direction thast added to the view offset per redraw */
 
 	/* Camera Uprighting variables */
diff --git a/source/blender/imbuf/intern/IMB_indexer.h b/source/blender/imbuf/intern/IMB_indexer.h
index bd5a455df98..08fa51966f2 100644
--- a/source/blender/imbuf/intern/IMB_indexer.h
+++ b/source/blender/imbuf/intern/IMB_indexer.h
@@ -37,7 +37,7 @@
 #include "IMB_anim.h"
 
 /*
-  seperate animation index files to solve the following problems:
+  separate animation index files to solve the following problems:
 
   a) different timecodes within one file (like DTS/PTS, Timecode-Track, 
      "implicit" timecodes within DV-files and HDV-files etc.)
diff --git a/source/blender/makesrna/intern/rna_image_api.c b/source/blender/makesrna/intern/rna_image_api.c
index 50ce816d7a1..473278440e6 100644
--- a/source/blender/makesrna/intern/rna_image_api.c
+++ b/source/blender/makesrna/intern/rna_image_api.c
@@ -157,7 +157,7 @@ static void rna_Image_unpack(Image *image, ReportList *reports, int method)
 		return;
 	}
 	else {
-		/* reports its own error on failier */
+		/* reports its own error on failure */
 		unpackImage (reports, image, method);
 	}
 }
diff --git a/source/blender/modifiers/intern/MOD_screw.c b/source/blender/modifiers/intern/MOD_screw.c
index 486c98f82a0..663faf0ed19 100644
--- a/source/blender/modifiers/intern/MOD_screw.c
+++ b/source/blender/modifiers/intern/MOD_screw.c
@@ -357,7 +357,7 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
 		if (!totedge) {
 			for (i=0; i < totvert; i++, mv_orig++, mv_new++) {
 				copy_v3_v3(mv_new->co, mv_orig->co);
-				normalize_v3_v3(vc->no, mv_new->co); /* no edges- this is realy a dummy normal */
+				normalize_v3_v3(vc->no, mv_new->co); /* no edges- this is really a dummy normal */
 			}
 		}
 		else {
diff --git a/source/blender/modifiers/intern/MOD_simpledeform.c b/source/blender/modifiers/intern/MOD_simpledeform.c
index b2e3c9532b6..7c852527c3d 100644
--- a/source/blender/modifiers/intern/MOD_simpledeform.c
+++ b/source/blender/modifiers/intern/MOD_simpledeform.c
@@ -326,7 +326,7 @@ static void deformVerts(ModifierData *md, Object *ob,
 	DerivedMesh *dm = derivedData;
 	CustomDataMask dataMask = requiredDataMask(ob, md);
 
-	/* we implement requiredDataMask but thats not really usefull since
+	/* we implement requiredDataMask but thats not really useful since
 	   mesh_calc_modifiers pass a NULL derivedData */
 	if(dataMask)
 		dm= get_dm(ob, NULL, dm, NULL, 0);
@@ -346,7 +346,7 @@ static void deformVertsEM(ModifierData *md, Object *ob,
 	DerivedMesh *dm = derivedData;
 	CustomDataMask dataMask = requiredDataMask(ob, md);
 
-	/* we implement requiredDataMask but thats not really usefull since
+	/* we implement requiredDataMask but thats not really useful since
 	   mesh_calc_modifiers pass a NULL derivedData */
 	if(dataMask)
 		dm= get_dm(ob, editData, dm, NULL, 0);
diff --git a/source/blender/python/intern/bpy_props.c b/source/blender/python/intern/bpy_props.c
index d3963458298..5a78ac8e094 100644
--- a/source/blender/python/intern/bpy_props.c
+++ b/source/blender/python/intern/bpy_props.c
@@ -359,7 +359,7 @@ static int bpy_struct_id_used(StructRNA *srna, char *identifier)
 #endif
 
 
-/* Function that sets RNA, NOTE - self is NULL when called from python, but being abused from C so we can pass the srna allong
+/* Function that sets RNA, NOTE - self is NULL when called from python, but being abused from C so we can pass the srna along
  * This isnt incorrect since its a python object - but be careful */
 PyDoc_STRVAR(BPy_BoolProperty_doc,
 ".. function:: BoolProperty(name=\"\", description=\"\", default=False, options={'ANIMATABLE'}, subtype='NONE', update=None)\n"
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index 76dcf9729ca..e52df8f9320 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -2218,7 +2218,7 @@ static PyObject *pyrna_prop_collection_subscript(BPy_PropertyRNA *self, PyObject
 }
 
 /* generic check to see if a PyObject is compatible with a collection
- * -1 on failier, 0 on success, sets the error */
+ * -1 on failure, 0 on success, sets the error */
 static int pyrna_prop_collection_type_check(BPy_PropertyRNA *self, PyObject *value)
 {
 	StructRNA *prop_srna;
@@ -3800,7 +3800,7 @@ PyDoc_STRVAR(pyrna_struct_get_doc,
 "   Returns the value of the custom property assigned to key or default\n"
 "   when not found (matches pythons dictionary function of the same name).\n"
 "\n"
-"   :arg key: The key assosiated with the custom property.\n"
+"   :arg key: The key associated with the custom property.\n"
 "   :type key: string\n"
 "   :arg default: Optional argument for the value to return if\n"
 "      *key* is not found.\n"
diff --git a/source/blender/python/intern/bpy_rna.h b/source/blender/python/intern/bpy_rna.h
index 502fa25c872..98afad38abe 100644
--- a/source/blender/python/intern/bpy_rna.h
+++ b/source/blender/python/intern/bpy_rna.h
@@ -149,7 +149,7 @@ typedef struct {
 	PyObject *in_weakreflist;
 #endif
 
-	/* collection iterator spesific parts */
+	/* collection iterator specific parts */
 	CollectionPropertyIterator iter;
 } BPy_PropertyCollectionIterRNA;
 
diff --git a/source/blender/python/mathutils/mathutils_Euler.c b/source/blender/python/mathutils/mathutils_Euler.c
index d9f741d841a..c6be461a227 100644
--- a/source/blender/python/mathutils/mathutils_Euler.c
+++ b/source/blender/python/mathutils/mathutils_Euler.c
@@ -75,7 +75,7 @@ static PyObject *Euler_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 	return newEulerObject(eul, order, Py_NEW, type);
 }
 
-/* internal use, assuem read callback is done */
+/* internal use, assume read callback is done */
 static const char *euler_order_str(EulerObject *self)
 {
 	static const char order[][4] = {"XYZ", "XZY", "YXZ", "YZX", "ZXY", "ZYX"};
diff --git a/source/blender/render/intern/include/raycounter.h b/source/blender/render/intern/include/raycounter.h
index 4d4952cb6c3..7acef6d3c67 100644
--- a/source/blender/render/intern/include/raycounter.h
+++ b/source/blender/render/intern/include/raycounter.h
@@ -35,7 +35,7 @@
 #ifndef RE_RAYCOUNTER_H
 #define RE_RAYCOUNTER_H
 
-//#define RE_RAYCOUNTER			/* enable counters per ray, usefull for measuring raytrace structures performance */
+//#define RE_RAYCOUNTER			/* enable counters per ray, useful for measuring raytrace structures performance */
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/source/blender/render/intern/raytrace/bvh.h b/source/blender/render/intern/raytrace/bvh.h
index 3ba5bbc624e..c7a1b002d61 100644
--- a/source/blender/render/intern/raytrace/bvh.h
+++ b/source/blender/render/intern/raytrace/bvh.h
@@ -167,7 +167,7 @@ static inline void bvh_node_merge_bb(Node *node, float *min, float *max)
 
 
 /*
- * recursivly transverse a BVH looking for a rayhit using a local stack
+ * recursively transverse a BVH looking for a rayhit using a local stack
  */
 template<class Node> static inline void bvh_node_push_childs(Node *node, Isect *isec, Node **stack, int &stack_pos);
 
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 07bab06e52f..b0183d05ac2 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -3586,8 +3586,8 @@ static void gesture_circle_modal_keymap(wmKeyConfig *keyconf)
 	WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_PRESS, KM_SHIFT, 0, GESTURE_MODAL_DESELECT);
 	WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_RELEASE, KM_SHIFT, 0, GESTURE_MODAL_NOP);
 #else
-	WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_PRESS, 0, 0, GESTURE_MODAL_DESELECT); //  defailt 2.4x
-	WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, 0, 0, GESTURE_MODAL_NOP); //  defailt 2.4x
+	WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_PRESS, 0, 0, GESTURE_MODAL_DESELECT); //  default 2.4x
+	WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, 0, 0, GESTURE_MODAL_NOP); //  default 2.4x
 #endif
 
 	WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_RELEASE, 0, 0, GESTURE_MODAL_NOP);
diff --git a/source/gameengine/Converter/BL_ArmatureObject.cpp b/source/gameengine/Converter/BL_ArmatureObject.cpp
index c5bf28b9b8d..43c9bd434c5 100644
--- a/source/gameengine/Converter/BL_ArmatureObject.cpp
+++ b/source/gameengine/Converter/BL_ArmatureObject.cpp
@@ -663,7 +663,7 @@ KX_PYMETHODDEF_DOC_NOARGS(BL_ArmatureObject, update,
 						  "update()\n"
 						  "Make sure that the armature will be updated on next graphic frame.\n"
 						  "This is automatically done if a KX_ArmatureActuator with mode run is active\n"
-						  "or if an action is playing. This function is usefull in other cases.\n")
+						  "or if an action is playing. This function is useful in other cases.\n")
 {
 	SetActiveAction(NULL, 0, KX_GetActiveEngine()->GetFrameTime());
 	Py_RETURN_NONE;
diff --git a/source/gameengine/Expressions/ConstExpr.cpp b/source/gameengine/Expressions/ConstExpr.cpp
index 8d5a47b2d0d..c41cf5a54f5 100644
--- a/source/gameengine/Expressions/ConstExpr.cpp
+++ b/source/gameengine/Expressions/ConstExpr.cpp
@@ -99,7 +99,7 @@ bool CConstExpr::NeedsRecalculated()
 
 CExpression* CConstExpr::CheckLink(std::vector<CBrokenLinkInfo*>& brokenlinks)
 {
-// parent checks if child is still usefull. 
+// parent checks if child is still useful.
 // When for example it's value it's deleted flag set
 // then release Value, and return NULL in case of constexpression
 // else return this...
diff --git a/source/gameengine/Ketsji/KXNetwork/KX_NetworkMessageSensor.cpp b/source/gameengine/Ketsji/KXNetwork/KX_NetworkMessageSensor.cpp
index a795a4eddc6..7e496136ce2 100644
--- a/source/gameengine/Ketsji/KXNetwork/KX_NetworkMessageSensor.cpp
+++ b/source/gameengine/Ketsji/KXNetwork/KX_NetworkMessageSensor.cpp
@@ -146,7 +146,7 @@ bool KX_NetworkMessageSensor::Evaluate()
 	// Return always true if a message was received otherwise we can loose messages
 	if (m_IsUp)
 		return true;
-	// Is it usefull to return also true when the first frame without a message?? 
+	// Is it useful to return also true when the first frame without a message??
 	// This will cause a fast on/off cycle that seems useless!
 	return result;
 }