spelling cleanup

56 files changed, 144 insertions, 144 deletions

diff --git a/source/blender/editors/animation/keyframes_general.c b/source/blender/editors/animation/keyframes_general.c
index 9ce148bc083..5d6d02bef63 100644
--- a/source/blender/editors/animation/keyframes_general.c
+++ b/source/blender/editors/animation/keyframes_general.c
@@ -853,7 +853,7 @@ short paste_animedit_keys (bAnimContext *ac, ListBase *anim_data,
 				}
 			}
 			
-			/* dont continue if some fcurves were pasted */
+			/* don't continue if some fcurves were pasted */
 			if (totmatch)
 				break;
 		}
diff --git a/source/blender/editors/armature/editarmature.c b/source/blender/editors/armature/editarmature.c
index ec02f406fcf..5945d25f3ee 100644
--- a/source/blender/editors/armature/editarmature.c
+++ b/source/blender/editors/armature/editarmature.c
@@ -1965,7 +1965,7 @@ float ED_rollBoneToVector(EditBone *bone, const float align_axis[3], const short
 	sub_v3_v3v3(nor, bone->tail, bone->head);
 	vec_roll_to_mat3(nor, 0.0f, mat);
 
-	/* check the bone isnt aligned with the axis */
+	/* check the bone isn't aligned with the axis */
 	if(!is_zero_v3(align_axis) && angle_v3v3(align_axis, mat[2]) > FLT_EPSILON) {
 		float vec[3], align_axis_proj[3], roll;
 
@@ -2153,7 +2153,7 @@ static void undoBones_to_editBones(void *uarmv, void *armv, void *UNUSED(data))
 	for(newebo= arm->edbo->first; newebo; newebo= newebo->next) {
 		if(newebo->parent) newebo->parent= newebo->parent->temp;
 	}
-	/* be sure they dont hang ever */
+	/* be sure they don't hang ever */
 	for(newebo= arm->edbo->first; newebo; newebo= newebo->next) {
 		newebo->temp= NULL;
 	}
@@ -3386,7 +3386,7 @@ static int armature_extrude_exec(bContext *C, wmOperator *op)
 					newbone->zwidth= ebone->zwidth;
 					newbone->ease1= ebone->ease1;
 					newbone->ease2= ebone->ease2;
-					newbone->rad_head= ebone->rad_tail;	// dont copy entire bone...
+					newbone->rad_head= ebone->rad_tail;	// don't copy entire bone...
 					newbone->rad_tail= ebone->rad_tail;
 					newbone->segments= 1;
 					newbone->layer= ebone->layer;
diff --git a/source/blender/editors/curve/editcurve.c b/source/blender/editors/curve/editcurve.c
index 8caa6cc6e26..b49ea7e5595 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -2256,13 +2256,13 @@ static int smooth_radius_exec(bContext *C, wmOperator *UNUSED(op))
 						/* if endpoints selected, then use them */
 						if (start_sel==0) {
 							start_rad = (nu->bezt+start_sel)->radius;
-							start_sel++; /* we dont want to edit the selected endpoint */
+							start_sel++; /* we don't want to edit the selected endpoint */
 						} else {
 							start_rad = (nu->bezt+start_sel-1)->radius;
 						}
 						if (end_sel==nu->pntsu-1) {
 							end_rad = (nu->bezt+end_sel)->radius;
-							end_sel--; /* we dont want to edit the selected endpoint */
+							end_sel--; /* we don't want to edit the selected endpoint */
 						} else {
 							end_rad = (nu->bezt+end_sel+1)->radius;
 						}
@@ -2318,13 +2318,13 @@ static int smooth_radius_exec(bContext *C, wmOperator *UNUSED(op))
 						/* if endpoints selected, then use them */
 						if (start_sel==0) {
 							start_rad = (nu->bp+start_sel)->radius;
-							start_sel++; /* we dont want to edit the selected endpoint */
+							start_sel++; /* we don't want to edit the selected endpoint */
 						} else {
 							start_rad = (nu->bp+start_sel-1)->radius;
 						}
 						if (end_sel==nu->pntsu-1) {
 							end_rad = (nu->bp+end_sel)->radius;
-							end_sel--; /* we dont want to edit the selected endpoint */
+							end_sel--; /* we don't want to edit the selected endpoint */
 						} else {
 							end_rad = (nu->bp+end_sel+1)->radius;
 						}
diff --git a/source/blender/editors/gpencil/drawgpencil.c b/source/blender/editors/gpencil/drawgpencil.c
index 76af016b6c6..b307052d37a 100644
--- a/source/blender/editors/gpencil/drawgpencil.c
+++ b/source/blender/editors/gpencil/drawgpencil.c
@@ -79,7 +79,7 @@ typedef enum eDrawStrokeFlags {
 	GP_DRAWDATA_ONLYV2D		= (1<<2),	/* only draw 'canvas' strokes */
 	GP_DRAWDATA_ONLYI2D		= (1<<3),	/* only draw 'image' strokes */
 	GP_DRAWDATA_IEDITHACK	= (1<<4),	/* special hack for drawing strokes in Image Editor (weird coordinates) */
-	GP_DRAWDATA_NO_XRAY		= (1<<5),	/* dont draw xray in 3D view (which is default) */
+	GP_DRAWDATA_NO_XRAY		= (1<<5),	/* don't draw xray in 3D view (which is default) */
 } eDrawStrokeFlags;
 
 
@@ -298,7 +298,7 @@ static void gp_draw_stroke (bGPDspoint *points, int totpoints, short thickness_s
 		
 		for (i=0, pt1=points, pt2=points+1; i < (totpoints-1); i++, pt1++, pt2++) {
 			float s0[2], s1[2];		/* segment 'center' points */
-			float t0[2], t1[2];		/* tesselated coordinates */
+			float t0[2], t1[2];		/* tessellated coordinates */
 			float m1[2], m2[2];		/* gradient and normal */
 			float mt[2], sc[2];		/* gradient for thickness, point for end-cap */
 			float pthick;			/* thickness at segment point */
@@ -513,7 +513,7 @@ static void gp_draw_strokes (bGPDframe *gpf, int offsx, int offsy, int winx, int
 				glDepthMask(0);
 				glEnable(GL_DEPTH_TEST);
 				
-				/* first arg is normally rv3d->dist, but this isnt available here and seems to work quite well without */
+				/* first arg is normally rv3d->dist, but this isn't available here and seems to work quite well without */
 				bglPolygonOffset(1.0f, 1.0f);
 #if 0
 				glEnable(GL_POLYGON_OFFSET_LINE);
@@ -783,7 +783,7 @@ void draw_gpencil_view3d (Scene *scene, View3D *v3d, ARegion *ar, short only3d)
 	gpd= gpencil_data_get_active_v3d(scene); // XXX
 	if (gpd == NULL) return;
 
-	/* when rendering to the offscreen buffer we dont want to
+	/* when rendering to the offscreen buffer we don't want to
 	 * deal with the camera border, otherwise map the coords to the camera border. */
 	if ((rv3d->persp == RV3D_CAMOB) && !(G.f & G_RENDER_OGL)) {
 		rctf rectf;
diff --git a/source/blender/editors/gpencil/editaction_gpencil.c b/source/blender/editors/gpencil/editaction_gpencil.c
index c932eb4c7d0..36f78e151d5 100644
--- a/source/blender/editors/gpencil/editaction_gpencil.c
+++ b/source/blender/editors/gpencil/editaction_gpencil.c
@@ -561,7 +561,7 @@ static short mirror_gpf_xaxis (bGPDframe *gpf, Scene *scene)
 static short mirror_gpf_marker (bGPDframe *gpf, Scene *scene)
 {
 	static TimeMarker *marker;
-	static short initialised = 0;
+	static short initialized = 0;
 	int diff;
 	
 	/* In order for this mirror function to work without
@@ -581,16 +581,16 @@ static short mirror_gpf_marker (bGPDframe *gpf, Scene *scene)
 	}
 	else {
 		/* initialization time */
-		if (initialised) {
+		if (initialized) {
 			/* reset everything for safety */
 			marker = NULL;
-			initialised = 0;
+			initialized = 0;
 		}
 		else {
 			/* try to find a marker */
 			marker= ED_markers_get_first_selected(&scene->markers);
 			if(marker) {
-				initialised= 1;
+				initialized= 1;
 			}
 		}
 	}
diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index 9136274e39a..390ee76dfcc 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -706,7 +706,7 @@ int uiButActiveOnly(const bContext *C, uiBlock *block, uiBut *but)
 	return 1;
 }
 
-/* use to check if we need to disable undo, but dont make any changes
+/* use to check if we need to disable undo, but don't make any changes
  * returns FALSE if undo needs to be disabled. */
 static int ui_but_is_rna_undo(uiBut *but)
 {
@@ -1880,7 +1880,7 @@ void ui_set_but_soft_range(uiBut *but, double value)
 {
 	/* ideally we would not limit this but practically, its more then
 	 * enough worst case is very long vectors wont use a smart soft-range
-	 * which isnt so bad. */
+	 * which isn't so bad. */
 
 	if(but->rnaprop) {
 		const PropertyType type= RNA_property_type(but->rnaprop);
@@ -2957,7 +2957,7 @@ void autocomplete_end(AutoComplete *autocpl, char *autoname)
 	if(autocpl->truncate[0])
 		BLI_strncpy(autoname, autocpl->truncate, autocpl->maxlen);
 	else {
-		if (autoname != autocpl->startname) /* dont copy a string over its self */
+		if (autoname != autocpl->startname) /* don't copy a string over its self */
 			BLI_strncpy(autoname, autocpl->startname, autocpl->maxlen);
 	}
 	MEM_freeN(autocpl->truncate);
diff --git a/source/blender/editors/interface/interface_draw.c b/source/blender/editors/interface/interface_draw.c
index cfd9f65cf00..39ae2ec37f4 100644
--- a/source/blender/editors/interface/interface_draw.c
+++ b/source/blender/editors/interface/interface_draw.c
@@ -1052,7 +1052,7 @@ void ui_draw_but_COLORBAND(uiBut *but, uiWidgetColors *UNUSED(wcol), rcti *rect)
 	float x1, y1, sizex, sizey;
 	float v3[2], v1[2], v2[2], v1a[2], v2a[2];
 	int a;
-	float pos, colf[4]= {0,0,0,0}; /* initialize in case the colorband isnt valid */
+	float pos, colf[4]= {0,0,0,0}; /* initialize in case the colorband isn't valid */
 		
 	coba= (ColorBand *)(but->editcoba? but->editcoba: but->poin);
 	if(coba==NULL) return;
diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index 537de167153..c7db8d9214f 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -349,7 +349,7 @@ static void ui_apply_autokey_undo(bContext *C, uiBut *but)
 		else if(but->drawstr[0]) str= but->drawstr;
 		else str= but->tip;
 
-		/* fallback, else we dont get an undo! */
+		/* fallback, else we don't get an undo! */
 		if(str == NULL || str[0] == '\0') {
 			str= "Unknown Action";
 		}
@@ -1647,7 +1647,7 @@ static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
 			int strip= BLI_utf8_invalid_strip(but->editstr, strlen(but->editstr));
 			/* not a file?, strip non utf-8 chars */
 			if(strip) {
-				/* wont happen often so isnt that annoying to keep it here for a while */
+				/* wont happen often so isn't that annoying to keep it here for a while */
 				printf("%s: invalid utf8 - stripped chars %d\n", __func__, strip);
 			}
 		}
diff --git a/source/blender/editors/interface/interface_layout.c b/source/blender/editors/interface/interface_layout.c
index 3b6648a6441..723ffb355a2 100644
--- a/source/blender/editors/interface/interface_layout.c
+++ b/source/blender/editors/interface/interface_layout.c
@@ -1589,7 +1589,7 @@ void uiItemMenuF(uiLayout *layout, const char *name, int icon, uiMenuCreateFunc
 
 typedef struct MenuItemLevel {
 	int opcontext;
-	/* dont use pointers to the strings because python can dynamically
+	/* don't use pointers to the strings because python can dynamically
 	 * allocate strings and free before the menu draws, see [#27304] */
 	char opname[OP_MAX_TYPENAME];
 	char propname[MAX_IDPROP_NAME];
diff --git a/source/blender/editors/interface/interface_ops.c b/source/blender/editors/interface/interface_ops.c
index 5ca3f730006..80c77a54a84 100644
--- a/source/blender/editors/interface/interface_ops.c
+++ b/source/blender/editors/interface/interface_ops.c
@@ -307,7 +307,7 @@ static int reset_default_button_exec(bContext *C, wmOperator *op)
 		}
 	}
 
-	/* Since we dont want to undo _all_ edits to settings, eg window
+	/* Since we don't want to undo _all_ edits to settings, eg window
 	 * edits on the screen or on operator settings.
 	 * it might be better to move undo's inline - campbell */
 	if(success) {
diff --git a/source/blender/editors/interface/interface_panel.c b/source/blender/editors/interface/interface_panel.c
index b1099576505..c5abcd46437 100644
--- a/source/blender/editors/interface/interface_panel.c
+++ b/source/blender/editors/interface/interface_panel.c
@@ -617,7 +617,7 @@ static int get_panel_size_y(Panel *pa)
 	return PNL_HEADER + pa->sizey;
 }
 
-/* this function is needed because uiBlock and Panel itself dont
+/* this function is needed because uiBlock and Panel itself don't
  * change sizey or location when closed */
 static int get_panel_real_ofsy(Panel *pa)
 {
@@ -1001,7 +1001,7 @@ static void ui_do_drag(const bContext *C, wmEvent *event, Panel *panel)
 
 
 /* this function is supposed to call general window drawing too */
-/* also it supposes a block has panel, and isnt a menu */
+/* also it supposes a block has panel, and isn't a menu */
 static void ui_handle_panel_header(const bContext *C, uiBlock *block, int mx, int my, int event)
 {
 	ScrArea *sa= CTX_wm_area(C);
diff --git a/source/blender/editors/interface/interface_regions.c b/source/blender/editors/interface/interface_regions.c
index f971410672c..a5c1bc0e659 100644
--- a/source/blender/editors/interface/interface_regions.c
+++ b/source/blender/editors/interface/interface_regions.c
@@ -1282,7 +1282,7 @@ static void ui_block_position(wmWindow *window, ARegion *butregion, uiBut *but,
 		if(dir2==0) if(dir1==UI_LEFT || dir1==UI_RIGHT) dir2= UI_DOWN;
 		if(dir2==0) if(dir1==UI_TOP || dir1==UI_DOWN) dir2= UI_LEFT;
 		
-		/* no space at all? dont change */
+		/* no space at all? don't change */
 		if(left || right) {
 			if(dir1==UI_LEFT && left==0) dir1= UI_RIGHT;
 			if(dir1==UI_RIGHT && right==0) dir1= UI_LEFT;
diff --git a/source/blender/editors/interface/interface_templates.c b/source/blender/editors/interface/interface_templates.c
index f868cd86db7..2b225fb56c2 100644
--- a/source/blender/editors/interface/interface_templates.c
+++ b/source/blender/editors/interface/interface_templates.c
@@ -793,9 +793,9 @@ static uiLayout *draw_modifier(uiLayout *layout, Scene *scene, Object *ob,
 			}
 		} /* tessellation point for curve-typed objects */
 		else if (ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
-			/* some modifiers could work with pre-tesselated curves only */
+			/* some modifiers could work with pre-tessellated curves only */
 			if (ELEM3(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_MeshDeform)) {
-				/* add disabled pre-tesselated button, so users could have
+				/* add disabled pre-tessellated button, so users could have
 				 * message for this modifiers */
 				but = uiDefIconButBitI(block, TOG, eModifierMode_ApplyOnSpline, 0, ICON_SURFACE_DATA, 0, 0, UI_UNIT_X-2, UI_UNIT_Y, &md->mode, 0.0, 0.0, 0.0, 0.0,
 						TIP_("This modifier could be applied on splines' points only"));
@@ -1579,7 +1579,7 @@ static void curvemap_buttons_zoom_out(bContext *C, void *cumap_v, void *UNUSED(u
 	CurveMapping *cumap = cumap_v;
 	float d, d1;
 
-	/* we allow 20 times zoom, but dont view outside clip */
+	/* we allow 20 times zoom, but don't view outside clip */
 	if( (cumap->curr.xmax - cumap->curr.xmin) < 20.0f*(cumap->clipr.xmax - cumap->clipr.xmin) ) {
 		d= d1= 0.15f*(cumap->curr.xmax - cumap->curr.xmin);
 
diff --git a/source/blender/editors/interface/view2d.c b/source/blender/editors/interface/view2d.c
index 2feccf7a4e8..142584f62fd 100644
--- a/source/blender/editors/interface/view2d.c
+++ b/source/blender/editors/interface/view2d.c
@@ -161,7 +161,7 @@ static void view2d_masks(View2D *v2d)
  *	- for some of these presets, it is expected that the region will have defined some
  * 	  additional settings necessary for the customisation of the 2D viewport to its requirements
  *	- this function should only be called from region init() callbacks, where it is expected that
- *	  this is called before UI_view2d_size_update(), as this one checks that the rects are properly initialised. 
+ *	  this is called before UI_view2d_size_update(), as this one checks that the rects are properly initialized. 
  */
 void UI_view2d_region_reinit(View2D *v2d, short type, int winx, int winy)
 {
@@ -170,7 +170,7 @@ void UI_view2d_region_reinit(View2D *v2d, short type, int winx, int winy)
 
 	/* initialize data if there is a need for such */
 	if ((v2d->flag & V2D_IS_INITIALISED) == 0) {
-		/* set initialised flag so that View2D doesn't get reinitialised next time again */
+		/* set initialized flag so that View2D doesn't get reinitialised next time again */
 		v2d->flag |= V2D_IS_INITIALISED;
 
 		init= 1;
diff --git a/source/blender/editors/interface/view2d_ops.c b/source/blender/editors/interface/view2d_ops.c
index 49dae81d985..e4726bf0ae4 100644
--- a/source/blender/editors/interface/view2d_ops.c
+++ b/source/blender/editors/interface/view2d_ops.c
@@ -1547,7 +1547,7 @@ static int scroller_activate_invoke(bContext *C, wmOperator *op, wmEvent *event)
 			if ( ((vsm->scroller=='h') && (v2d->keepofs & V2D_LOCKOFS_X)) ||
 				 ((vsm->scroller=='v') && (v2d->keepofs & V2D_LOCKOFS_Y)) )
 			{
-				/* free customdata initialised */
+				/* free customdata initialized */
 				scroller_activate_exit(C, op);
 				
 				/* can't catch this event for ourselves, so let it go to someone else? */
@@ -1559,7 +1559,7 @@ static int scroller_activate_invoke(bContext *C, wmOperator *op, wmEvent *event)
 		if ( ((vsm->scroller=='h') && (v2d->scroll & (V2D_SCROLL_HORIZONTAL_HIDE|V2D_SCROLL_HORIZONTAL_FULLR))) ||
 			 ((vsm->scroller=='v') && (v2d->scroll & (V2D_SCROLL_VERTICAL_HIDE|V2D_SCROLL_VERTICAL_FULLR))) )
 		{
-			/* free customdata initialised */
+			/* free customdata initialized */
 			scroller_activate_exit(C, op);
 				
 			/* can't catch this event for ourselves, so let it go to someone else? */
diff --git a/source/blender/editors/mesh/bmesh_utils.c b/source/blender/editors/mesh/bmesh_utils.c
index 8ca5dce647f..ced878610c3 100644
--- a/source/blender/editors/mesh/bmesh_utils.c
+++ b/source/blender/editors/mesh/bmesh_utils.c
@@ -421,7 +421,7 @@ void EDBM_select_more(BMEditMesh *em)
 	             "regionextend geom=%hvef constrict=%b use_faces=%b",
 	             BM_ELEM_SELECT, FALSE, use_faces);
 	BMO_op_exec(em->bm, &bmop);
-	/* dont flush selection in edge/vertex mode  */
+	/* don't flush selection in edge/vertex mode  */
 	BMO_slot_buffer_hflag_enable(em->bm, &bmop, "geomout", BM_ELEM_SELECT, BM_ALL, use_faces ? TRUE : FALSE);
 	BMO_op_finish(em->bm, &bmop);
 
@@ -437,7 +437,7 @@ void EDBM_select_less(BMEditMesh *em)
 	             "regionextend geom=%hvef constrict=%b use_faces=%b",
 	             BM_ELEM_SELECT, TRUE, use_faces);
 	BMO_op_exec(em->bm, &bmop);
-	/* dont flush selection in edge/vertex mode  */
+	/* don't flush selection in edge/vertex mode  */
 	BMO_slot_buffer_hflag_disable(em->bm, &bmop, "geomout", BM_ELEM_SELECT, BM_ALL, use_faces ? TRUE : FALSE);
 	BMO_op_finish(em->bm, &bmop);
 
diff --git a/source/blender/editors/mesh/mesh_data.c b/source/blender/editors/mesh/mesh_data.c
index bb000b2f8f5..cdbe34b4bd5 100644
--- a/source/blender/editors/mesh/mesh_data.c
+++ b/source/blender/editors/mesh/mesh_data.c
@@ -288,7 +288,7 @@ int ED_mesh_uv_loop_reset(struct bContext *C, struct Mesh *me)
 		fuvs += len;
 	}
 
-	/* BMESH_TODO: Copy poly UVs onto CD_MTFACE layer for tesselated faces */
+	/* BMESH_TODO: Copy poly UVs onto CD_MTFACE layer for tessellated faces */
 
 	BLI_array_free(uvs);
 	BLI_array_free(polylengths);
@@ -762,7 +762,7 @@ void ED_mesh_update(Mesh *mesh, bContext *C, int calc_edges, int calc_tessface)
 	if(mesh->totface > 0 && mesh->totpoly == 0) {
 		convert_mfaces_to_mpolys(mesh);
 
-		/* would only be converting back again, dont bother */
+		/* would only be converting back again, don't bother */
 		tessface_input = TRUE;
 
 		/* it also happens that converting the faces calculates edges, skip this */
@@ -787,8 +787,8 @@ void ED_mesh_update(Mesh *mesh, bContext *C, int calc_edges, int calc_tessface)
 	 * calculate normals only for the mvert's. - campbell */
 #ifdef USE_BMESH_MPOLY_NORMALS
 	polyindex = CustomData_get_layer(&mesh->fdata, CD_POLYINDEX);
-	/* add a normals layer for tesselated faces, a tessface normal will
-	 * contain the normal of the poly the face was tesselated from. */
+	/* add a normals layer for tessellated faces, a tessface normal will
+	 * contain the normal of the poly the face was tessellated from. */
 	face_nors = CustomData_add_layer(&mesh->fdata, CD_NORMAL, CD_CALLOC, NULL, mesh->totface);
 
 	mesh_calc_normals_mapping_ex(mesh->mvert, mesh->totvert,
@@ -870,7 +870,7 @@ static void mesh_add_edges(Mesh *mesh, int len)
 
 	CustomData_free(&mesh->edata, mesh->totedge);
 	mesh->edata= edata;
-	mesh_update_customdata_pointers(mesh, FALSE); /* new edges dont change tessellation */
+	mesh_update_customdata_pointers(mesh, FALSE); /* new edges don't change tessellation */
 
 	/* set default flags */
 	medge= &mesh->medge[mesh->totedge];
diff --git a/source/blender/editors/object/object_constraint.c b/source/blender/editors/object/object_constraint.c
index 671c70c1f0f..2529b6f518f 100644
--- a/source/blender/editors/object/object_constraint.c
+++ b/source/blender/editors/object/object_constraint.c
@@ -1160,7 +1160,7 @@ static int pose_constraints_clear_exec(bContext *C, wmOperator *UNUSED(op))
 	/* force depsgraph to get recalculated since relationships removed */
 	DAG_scene_sort(bmain, scene);		/* sort order of objects */	
 	
-	/* note, calling BIK_clear_data() isnt needed here */
+	/* note, calling BIK_clear_data() isn't needed here */
 
 	/* do updates */
 	DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
diff --git a/source/blender/editors/object/object_modifier.c b/source/blender/editors/object/object_modifier.c
index f1222ccf7f7..dea9c1a3b6c 100644
--- a/source/blender/editors/object/object_modifier.c
+++ b/source/blender/editors/object/object_modifier.c
@@ -553,7 +553,7 @@ static int modifier_apply_obdata(ReportList *reports, Scene *scene, Object *ob,
 		}
 
 		cu = ob->data;
-		BKE_report(reports, RPT_INFO, "Applied modifier only changed CV points, not tesselated/bevel vertices");
+		BKE_report(reports, RPT_INFO, "Applied modifier only changed CV points, not tessellated/bevel vertices");
 
 		vertexCos = curve_getVertexCos(cu, &cu->nurb, &numVerts);
 		mti->deformVerts(md, ob, NULL, vertexCos, numVerts, 0, 0);
diff --git a/source/blender/editors/object/object_shapekey.c b/source/blender/editors/object/object_shapekey.c
index b186f788bbf..87a058334c0 100644
--- a/source/blender/editors/object/object_shapekey.c
+++ b/source/blender/editors/object/object_shapekey.c
@@ -224,7 +224,7 @@ static int object_shape_key_mirror(bContext *C, Object *ob)
 			/* half but found up odd value */
 			const int pntsu_half = (lt->pntsu / 2) + (lt->pntsu % 2);
 
-			/* currently editmode isnt supported by mesh so
+			/* currently editmode isn't supported by mesh so
 			 * ignore here for now too */
 
 			/* if(lt->editlatt) lt= lt->editlatt->latt; */
diff --git a/source/blender/editors/object/object_transform.c b/source/blender/editors/object/object_transform.c
index d66f16b0adb..57cc034aaaa 100644
--- a/source/blender/editors/object/object_transform.c
+++ b/source/blender/editors/object/object_transform.c
@@ -645,7 +645,7 @@ static int object_origin_set_exec(bContext *C, wmOperator *op)
 		return OPERATOR_CANCELLED;
 	}
 	else {
-		/* get the view settings if 'around' isnt set and the view is available */
+		/* get the view settings if 'around' isn't set and the view is available */
 		View3D *v3d= CTX_wm_view3d(C);
 		copy_v3_v3(cursor, give_cursor(scene, v3d));
 		if(v3d && !RNA_struct_property_is_set(op->ptr, "center"))
diff --git a/source/blender/editors/object/object_vgroup.c b/source/blender/editors/object/object_vgroup.c
index 7328cbb2e7a..1e4d32de003 100644
--- a/source/blender/editors/object/object_vgroup.c
+++ b/source/blender/editors/object/object_vgroup.c
@@ -2783,7 +2783,7 @@ static int vgroup_do_remap(Object *ob, char *name_array, wmOperator *op)
 			}
 		}
 		else {
-			BKE_report(op->reports, RPT_ERROR, "Editmode lattice isnt supported yet");
+			BKE_report(op->reports, RPT_ERROR, "Editmode lattice isn't supported yet");
 			MEM_freeN(sort_map_update);
 			return OPERATOR_CANCELLED;
 		}
diff --git a/source/blender/editors/physics/physics_fluid.c b/source/blender/editors/physics/physics_fluid.c
index e17ce84406b..dbdee3baca8 100644
--- a/source/blender/editors/physics/physics_fluid.c
+++ b/source/blender/editors/physics/physics_fluid.c
@@ -674,7 +674,7 @@ static int fluid_init_filepaths(Object *fsDomain, char *targetDir, char *targetF
 	BLI_strncpy(newSurfdataPath, domainSettings->surfdataPath, FILE_MAXDIR); /* if 0'd out below, this value is never used! */
 	BLI_path_abs(targetDir, relbase); // fixed #frame-no
 
-	/* .tmp: dont overwrite/delete original file */
+	/* .tmp: don't overwrite/delete original file */
 	BLI_join_dirfile(targetFile, FILE_MAX, targetDir, suffixConfigTmp);
 
 	// make sure all directories exist
@@ -993,7 +993,7 @@ static int fluidsimBake(bContext *C, ReportList *reports, Object *fsDomain, shor
 	}
 
 	/* ********  start writing / exporting ******** */
-	// use .tmp, dont overwrite/delete original file
+	// use .tmp, don't overwrite/delete original file
 	BLI_join_dirfile(targetFile, sizeof(targetFile), targetDir, suffixConfigTmp);
 	
 	// make sure these directories exist as well
diff --git a/source/blender/editors/render/render_internal.c b/source/blender/editors/render/render_internal.c
index 4fbc5085b2d..c104b498095 100644
--- a/source/blender/editors/render/render_internal.c
+++ b/source/blender/editors/render/render_internal.c
@@ -609,7 +609,7 @@ void RENDER_OT_render(wmOperatorType *ot)
 	ot->modal= screen_render_modal;
 	ot->exec= screen_render_exec;
 
-	/*ot->poll= ED_operator_screenactive;*/ /* this isnt needed, causes failer in background mode */
+	/*ot->poll= ED_operator_screenactive;*/ /* this isn't needed, causes failer in background mode */
 
 	RNA_def_boolean(ot->srna, "animation", 0, "Animation", "Render files from the animation range of this scene");
 	RNA_def_boolean(ot->srna, "write_still", 0, "Write Image", "Save rendered the image to the output path (used only when animation is disabled)");
diff --git a/source/blender/editors/render/render_opengl.c b/source/blender/editors/render/render_opengl.c
index 79832e2a9d1..c36ec5a90dd 100644
--- a/source/blender/editors/render/render_opengl.c
+++ b/source/blender/editors/render/render_opengl.c
@@ -439,7 +439,7 @@ static int screen_opengl_render_anim_step(bContext *C, wmOperator *op)
 	Object *camera= NULL;
 
 	/* update animated image textures for gpu, etc,
-	 * call before scene_update_for_newframe so modifiers with textuers dont lag 1 frame */
+	 * call before scene_update_for_newframe so modifiers with textuers don't lag 1 frame */
 	ED_image_update_frame(bmain, scene->r.cfra);
 
 	/* go to next frame */
diff --git a/source/blender/editors/screen/area.c b/source/blender/editors/screen/area.c
index 57b65ad5223..d744149bf9c 100644
--- a/source/blender/editors/screen/area.c
+++ b/source/blender/editors/screen/area.c
@@ -1703,7 +1703,7 @@ void ED_region_panels_init(wmWindowManager *wm, ARegion *ar)
 	ar->v2d.scroll &= ~V2D_SCROLL_VERTICAL_HIDE;
 	ar->v2d.keepzoom |= V2D_KEEPZOOM;
 
-		// correctly initialised User-Prefs?
+		// correctly initialized User-Prefs?
 	if(!(ar->v2d.align & V2D_ALIGN_NO_POS_Y))
 		ar->v2d.flag &= ~V2D_IS_INITIALISED;
 	
diff --git a/source/blender/editors/screen/screen_edit.c b/source/blender/editors/screen/screen_edit.c
index 4ed6e08fb31..3f8f786489c 100644
--- a/source/blender/editors/screen/screen_edit.c
+++ b/source/blender/editors/screen/screen_edit.c
@@ -1819,7 +1819,7 @@ void ED_update_for_newframe(Main *bmain, Scene *scene, bScreen *screen, int UNUS
 	//extern void audiostream_scrub(unsigned int frame);	/* seqaudio.c */
 	
 	/* update animated image textures for gpu, etc,
-	 * call before scene_update_for_newframe so modifiers with textuers dont lag 1 frame */
+	 * call before scene_update_for_newframe so modifiers with textuers don't lag 1 frame */
 	ED_image_update_frame(bmain, scene->r.cfra);
 
 	ED_clip_update_frame(bmain, scene->r.cfra);
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index a2ad3c4480b..956251d7bb9 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -894,7 +894,7 @@ static int project_bucket_point_occluded(const ProjPaintState *ps, LinkNode *buc
 			else
 				isect_ret = project_paint_occlude_ptv(pixelScreenCo, ps->screenCoords[mf->v1], ps->screenCoords[mf->v2], ps->screenCoords[mf->v3], w, ps->is_ortho);
 
-			/* Note, if isect_ret==-1 then we dont want to test the other side of the quad */
+			/* Note, if isect_ret==-1 then we don't want to test the other side of the quad */
 			if (isect_ret==0 && mf->v4) {
 				if(do_clip)
 					isect_ret = project_paint_occlude_ptv_clip(ps, mf, pixelScreenCo, ps->screenCoords[mf->v1], ps->screenCoords[mf->v3], ps->screenCoords[mf->v4], 1);
@@ -1352,7 +1352,7 @@ static void project_face_pixel(const MTFace *tf_other, ImBuf *ibuf_other, const
 		
 }
 
-/* run this outside project_paint_uvpixel_init since pixels with mask 0 dont need init */
+/* run this outside project_paint_uvpixel_init since pixels with mask 0 don't need init */
 static float project_paint_uvpixel_mask(
 		const ProjPaintState *ps,
 		const int face_index,
@@ -1452,7 +1452,7 @@ static float project_paint_uvpixel_mask(
 	}
 	
 	// This only works when the opacity dosnt change while painting, stylus pressure messes with this
-	// so dont use it.
+	// so don't use it.
 	// if (ps->is_airbrush==0) mask *= brush_alpha(ps->brush);
 	
 	return mask;
@@ -1506,7 +1506,7 @@ static ProjPixel *project_paint_uvpixel_init(
 		projPixel->origColor.uint = projPixel->newColor.uint = *projPixel->pixel.uint_pt;
 	}
 	
-	/* screenspace unclamped, we could keep its z and w values but dont need them at the moment */
+	/* screenspace unclamped, we could keep its z and w values but don't need them at the moment */
 	copy_v2_v2(projPixel->projCoSS, pixelScreenCo);
 	
 	projPixel->x_px = x_px;
@@ -1745,7 +1745,7 @@ static int line_clip_rect2f(
 
 /* scale the quad & tri about its center
  * scaling by PROJ_FACE_SCALE_SEAM (0.99x) is used for getting fake UV pixel coords that are on the
- * edge of the face but slightly inside it occlusion tests dont return hits on adjacent faces */
+ * edge of the face but slightly inside it occlusion tests don't return hits on adjacent faces */
 #ifndef PROJ_DEBUG_NOSEAMBLEED
 static void scale_quad(float insetCos[4][3], float *origCos[4], const float inset)
 {
@@ -1984,7 +1984,7 @@ static void project_bucket_clip_face(
 	inside_bucket_flag |= BLI_in_rctf(bucket_bounds, v3coSS[0], v3coSS[1])		<< 2;
 	
 	if (inside_bucket_flag == ISECT_ALL3) {
-		/* all screenspace points are inside the bucket bounding box, this means we dont need to clip and can simply return the UVs */
+		/* all screenspace points are inside the bucket bounding box, this means we don't need to clip and can simply return the UVs */
 		if (flip) { /* facing the back? */
 			copy_v2_v2(bucket_bounds_uv[0], uv3co);
 			copy_v2_v2(bucket_bounds_uv[1], uv2co);
@@ -2641,7 +2641,7 @@ static void project_paint_face_init(const ProjPaintState *ps, const int thread_i
 												else {
 													barycentric_weights_v2(tf_uv_pxoffset[0], tf_uv_pxoffset[1], tf_uv_pxoffset[2], uv_close, w);
 												}
-#else											/* this is buggy with quads, dont use for now */
+#else											/* this is buggy with quads, don't use for now */
 
 												/* Cheat, we know where we are along the edge so work out the weights from that */
 												fac = fac1 + (fac * (fac2-fac1));
@@ -2852,7 +2852,7 @@ static int project_bucket_face_isect(ProjPaintState *ps, int bucket_x, int bucke
 	return 0;
 }
 
-/* Add faces to the bucket but dont initialize its pixels
+/* Add faces to the bucket but don't initialize its pixels
  * TODO - when painting occluded, sort the faces on their min-Z and only add faces that faces that are not occluded */
 static void project_paint_delayed_face_init(ProjPaintState *ps, const MFace *mf, const int face_index)
 {
@@ -3509,7 +3509,7 @@ static void project_paint_end(ProjPaintState *ps)
 	if(ps->dm->type != DM_TYPE_CDDM) {
 		if(ps->dm_mvert) MEM_freeN(ps->dm_mvert);
 		if(ps->dm_mface) MEM_freeN(ps->dm_mface);
-		/* looks like these dont need copying */
+		/* looks like these don't need copying */
 #if 0
 		if(ps->dm_mtface) MEM_freeN(ps->dm_mtface);
 		if(ps->dm_mtface_clone) MEM_freeN(ps->dm_mtface_clone);
@@ -3593,7 +3593,7 @@ static int project_bucket_iter_init(ProjPaintState *ps, const float mval_f[2])
 		float min_brush[2], max_brush[2];
 		const float radius = (float)brush_size(ps->scene, ps->brush);
 
-		/* so we dont have a bucket bounds that is way too small to paint into */
+		/* so we don't have a bucket bounds that is way too small to paint into */
 		// if (radius < 1.0f) radius = 1.0f; // this doesn't work yet :/
 
 		min_brush[0] = mval_f[0] - radius;
@@ -3964,12 +3964,12 @@ static void *do_projectpaint_thread(void *ph_v)
 							case PAINT_TOOL_CLONE:
 								if (is_floatbuf) {
 									if (((ProjPixelClone *)projPixel)->clonepx.f[3]) {
-										do_projectpaint_clone_f(ps, projPixel, alpha, mask); /* rgba isnt used for cloning, only alpha */
+										do_projectpaint_clone_f(ps, projPixel, alpha, mask); /* rgba isn't used for cloning, only alpha */
 									}
 								}
 								else {
 									if (((ProjPixelClone*)projPixel)->clonepx.ch[3]) {
-										do_projectpaint_clone(ps, projPixel, alpha, mask); /* rgba isnt used for cloning, only alpha */
+										do_projectpaint_clone(ps, projPixel, alpha, mask); /* rgba isn't used for cloning, only alpha */
 									}
 								}
 								break;
@@ -4711,7 +4711,7 @@ typedef struct PaintOperation {
 
 	int first;
 	int prevmouse[2];
-	float prev_pressure; /* need this since we dont get tablet events for pressure change */
+	float prev_pressure; /* need this since we don't get tablet events for pressure change */
 	int orig_brush_size;
 	double starttime;
 
@@ -4880,7 +4880,7 @@ static int texture_paint_init(bContext *C, wmOperator *op)
 		if (pop->ps.ob==NULL || !(pop->ps.ob->lay & pop->ps.v3d->lay))
 			return 0;
 
-		/* Dont allow brush size below 2 */
+		/* Don't allow brush size below 2 */
 		if (brush_size(scene, brush) < 2)
 			brush_set_size(scene, brush, 2);
 
diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c b/source/blender/editors/sculpt_paint/paint_vertex.c
index 68153c6e760..3a6a9dd6548 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex.c
@@ -103,7 +103,7 @@ static int vertex_paint_use_fast_update_check(Object *ob)
 }
 
 /* if the polygons from the mesh and the 'derivedFinal' match
- * we can assume that no modifiers are applied and that its worth adding tesselated faces
+ * we can assume that no modifiers are applied and that its worth adding tessellated faces
  * so 'vertex_paint_use_fast_update_check()' returns TRUE */
 static int vertex_paint_use_tessface_check(Object *ob)
 {
@@ -189,7 +189,7 @@ unsigned int vpaint_get_current_col(VPaint *vp)
 	Brush *brush = paint_brush(&vp->paint);
 	unsigned char col[4];
 	rgb_float_to_uchar(col, brush->rgb);
-	col[3] = 255; /* alpha isnt used, could even be removed to speedup paint a little */
+	col[3] = 255; /* alpha isn't used, could even be removed to speedup paint a little */
 	return *(unsigned int *)col;
 }
 
@@ -2177,7 +2177,7 @@ static int wpaint_stroke_test_start(bContext *C, wmOperator *op, wmEvent *UNUSED
 		ED_vgroup_add(ob);
 	}
 
-	/* ensure we dont try paint onto an invalid group */
+	/* ensure we don't try paint onto an invalid group */
 	if (ob->actdef <= 0) {
 		BKE_report(op->reports, RPT_WARNING, "No active vertex group for painting, aborting");
 		return FALSE;
@@ -2251,7 +2251,7 @@ static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, P
 	const float brush_alpha_value = brush_alpha(scene, brush);
 	const float brush_alpha_pressure = brush_alpha_value * (brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
 
-	/* intentionally dont initialize as NULL, make sure we initialize all members below */
+	/* intentionally don't initialize as NULL, make sure we initialize all members below */
 	WeightPaintInfo wpi;
 
 	/* cannot paint if there is no stroke data */
@@ -2415,7 +2415,7 @@ static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, P
 
 	/* *** free wpi members */
 	MEM_freeN((void *)wpi.defbase_sel);
-	/* *** dont freeing wpi members */
+	/* *** don't freeing wpi members */
 
 
 	swap_m4m4(vc->rv3d->persmat, mat);
diff --git a/source/blender/editors/space_console/console_ops.c b/source/blender/editors/space_console/console_ops.c
index b52bc75eac8..36bb10ec21f 100644
--- a/source/blender/editors/space_console/console_ops.c
+++ b/source/blender/editors/space_console/console_ops.c
@@ -614,7 +614,7 @@ static int console_history_append_exec(bContext *C, wmOperator *op)
 	ARegion *ar= CTX_wm_region(C);
 	ScrArea *sa= CTX_wm_area(C);
 	ConsoleLine *ci= console_history_verify(C);
-	char *str= RNA_string_get_alloc(op->ptr, "text", NULL, 0); /* own this text in the new line, dont free */
+	char *str= RNA_string_get_alloc(op->ptr, "text", NULL, 0); /* own this text in the new line, don't free */
 	int cursor= RNA_int_get(op->ptr, "current_character");
 	short rem_dupes= RNA_boolean_get(op->ptr, "remove_duplicates");
 	int prev_len= ci->len;
@@ -671,7 +671,7 @@ static int console_scrollback_append_exec(bContext *C, wmOperator *op)
 	ARegion *ar= CTX_wm_region(C);
 	ConsoleLine *ci;
 	
-	char *str= RNA_string_get_alloc(op->ptr, "text", NULL, 0); /* own this text in the new line, dont free */
+	char *str= RNA_string_get_alloc(op->ptr, "text", NULL, 0); /* own this text in the new line, don't free */
 	int type= RNA_enum_get(op->ptr, "type");
 
 	console_history_verify(C);
diff --git a/source/blender/editors/space_file/filelist.c b/source/blender/editors/space_file/filelist.c
index f0baa6acf8c..5bc62620dfa 100644
--- a/source/blender/editors/space_file/filelist.c
+++ b/source/blender/editors/space_file/filelist.c
@@ -677,7 +677,7 @@ int filelist_find(struct FileList* filelist, const char *filename)
 
 	
 	for (i = 0; i < filelist->numfiles; ++i) {
-		if ( strcmp(filelist->filelist[i].relname, filename) == 0) { /* not dealing with user input so dont need BLI_path_cmp */
+		if ( strcmp(filelist->filelist[i].relname, filename) == 0) { /* not dealing with user input so don't need BLI_path_cmp */
 			index = i;
 			break;
 		}
diff --git a/source/blender/editors/space_image/image_draw.c b/source/blender/editors/space_image/image_draw.c
index 46de1254f41..3c2ebea5c28 100644
--- a/source/blender/editors/space_image/image_draw.c
+++ b/source/blender/editors/space_image/image_draw.c
@@ -80,7 +80,7 @@ static void image_verify_buffer_float(Image *ima, ImBuf *ibuf, int color_manage)
 {
 	/* detect if we need to redo the curve map.
 	 * ibuf->rect is zero for compositor and render results after change 
-	 * convert to 32 bits always... drawing float rects isnt supported well (atis)
+	 * convert to 32 bits always... drawing float rects isn't supported well (atis)
 	 *
 	 * NOTE: if float buffer changes, we have to manually remove the rect
 	 */
diff --git a/source/blender/editors/space_image/image_ops.c b/source/blender/editors/space_image/image_ops.c
index ae47125fa84..6271dbece35 100644
--- a/source/blender/editors/space_image/image_ops.c
+++ b/source/blender/editors/space_image/image_ops.c
@@ -1069,7 +1069,7 @@ static int save_image_options_init(SaveImageOptions *simopts, SpaceImage *sima,
 			simopts->im_format.depth= imtype_best_depth(ibuf, simopts->im_format.imtype);
 		}
 
-		/* some formats dont use quality so fallback to scenes quality */
+		/* some formats don't use quality so fallback to scenes quality */
 		if (simopts->im_format.quality == 0) {
 			simopts->im_format.quality= scene->r.im_format.quality;
 		}
diff --git a/source/blender/editors/space_node/node_draw.c b/source/blender/editors/space_node/node_draw.c
index 46850d4ff60..3d5dc454768 100644
--- a/source/blender/editors/space_node/node_draw.c
+++ b/source/blender/editors/space_node/node_draw.c
@@ -673,7 +673,7 @@ static void node_draw_basis(const bContext *C, ARegion *ar, SpaceNode *snode, bN
 	BLI_strncpy(showname, nodeLabel(node), sizeof(showname));
 	
 	//if(node->flag & NODE_MUTED)
-	//	BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - dont print into self!
+	//	BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - don't print into self!
 	
 	uiDefBut(node->block, LABEL, 0, showname, (short)(rct->xmin+15), (short)(rct->ymax-NODE_DY), 
 			 (int)(iconofs - rct->xmin-18.0f), NODE_DY,  NULL, 0, 0, 0, 0, "");
@@ -831,7 +831,7 @@ static void node_draw_hidden(const bContext *C, ARegion *ar, SpaceNode *snode, b
 		BLI_strncpy(showname, nodeLabel(node), sizeof(showname));
 		
 		//if(node->flag & NODE_MUTED)
-		//	BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - dont print into self!
+		//	BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - don't print into self!
 
 		uiDefBut(node->block, LABEL, 0, showname, (short)(rct->xmin+15), (short)(centy-10), 
 				 (int)(rct->xmax - rct->xmin-18.0f -12.0f), NODE_DY,  NULL, 0, 0, 0, 0, "");
diff --git a/source/blender/editors/space_node/node_edit.c b/source/blender/editors/space_node/node_edit.c
index 235e8e6c605..4adbd32cf37 100644
--- a/source/blender/editors/space_node/node_edit.c
+++ b/source/blender/editors/space_node/node_edit.c
@@ -2168,7 +2168,7 @@ static int node_duplicate_exec(bContext *C, wmOperator *op)
 			newnode = nodeCopyNode(ntree, node);
 			
 			if(newnode->id) {
-				/* simple id user adjustment, node internal functions dont touch this
+				/* simple id user adjustment, node internal functions don't touch this
 				 * but operators and readfile.c do. */
 				id_us_plus(newnode->id);
 				/* to ensure redraws or rerenders happen */
diff --git a/source/blender/editors/space_outliner/outliner_draw.c b/source/blender/editors/space_outliner/outliner_draw.c
index f0115170525..12b93e17f9f 100644
--- a/source/blender/editors/space_outliner/outliner_draw.c
+++ b/source/blender/editors/space_outliner/outliner_draw.c
@@ -1217,7 +1217,7 @@ static void outliner_draw_iconrow(bContext *C, uiBlock *block, Scene *scene, Spa
 			(*offsx) += UI_UNIT_X;
 		}
 		
-		/* this tree element always has same amount of branches, so dont draw */
+		/* this tree element always has same amount of branches, so don't draw */
 		if(tselem->type!=TSE_R_LAYER)
 			outliner_draw_iconrow(C, block, scene, soops, &te->subtree, level+1, xmax, offsx, ys);
 	}
@@ -1251,7 +1251,7 @@ static void outliner_draw_tree_element(bContext *C, uiBlock *block, Scene *scene
 	if(*starty+2*UI_UNIT_Y >= ar->v2d.cur.ymin && *starty<= ar->v2d.cur.ymax) {
 		int xmax= ar->v2d.cur.xmax;
 		
-		/* icons can be ui buts, we dont want it to overlap with restrict */
+		/* icons can be ui buts, we don't want it to overlap with restrict */
 		if((soops->flag & SO_HIDE_RESTRICTCOLS)==0)
 			xmax-= OL_TOGW+UI_UNIT_X;
 		
@@ -1393,7 +1393,7 @@ static void outliner_draw_tree_element(bContext *C, uiBlock *block, Scene *scene
 		if(!TSELEM_OPEN(tselem,soops)) {
 			if(te->subtree.first) {
 				if(tselem->type==0 && te->idcode==ID_SCE);
-				else if(tselem->type!=TSE_R_LAYER) { /* this tree element always has same amount of branches, so dont draw */
+				else if(tselem->type!=TSE_R_LAYER) { /* this tree element always has same amount of branches, so don't draw */
 					int tempx= startx+offsx;
 					
 					// divider
diff --git a/source/blender/editors/space_outliner/outliner_tools.c b/source/blender/editors/space_outliner/outliner_tools.c
index b44e363090f..c7587935cb3 100644
--- a/source/blender/editors/space_outliner/outliner_tools.c
+++ b/source/blender/editors/space_outliner/outliner_tools.c
@@ -413,7 +413,7 @@ void outliner_do_object_operation(bContext *C, Scene *scene_act, SpaceOops *soop
 				}
 				/* important to use 'scene_owner' not scene_act else deleting objects can crash.
 				 * only use 'scene_act' when 'scene_owner' is NULL, which can happen when the
-				 * outliner isnt showing scenes: Visible Layer draw mode for eg. */
+				 * outliner isn't showing scenes: Visible Layer draw mode for eg. */
 				operation_cb(C, scene_owner ? scene_owner : scene_act, te, NULL, tselem);
 			}
 		}
diff --git a/source/blender/editors/space_outliner/outliner_tree.c b/source/blender/editors/space_outliner/outliner_tree.c
index 56cfcf9e18a..d8a9e75ebc6 100644
--- a/source/blender/editors/space_outliner/outliner_tree.c
+++ b/source/blender/editors/space_outliner/outliner_tree.c
@@ -1284,7 +1284,7 @@ static void outliner_sort(SpaceOops *soops, ListBase *lb)
 				tp->te= te;
 				tp->name= te->name;
 				tp->idcode= te->idcode;
-				if(tselem->type && tselem->type!=TSE_DEFGROUP) tp->idcode= 0;	// dont sort this
+				if(tselem->type && tselem->type!=TSE_DEFGROUP) tp->idcode= 0;	// don't sort this
 				tp->id= tselem->id;
 			}
 			/* keep beginning of list */
diff --git a/source/blender/editors/space_sequencer/sequencer_add.c b/source/blender/editors/space_sequencer/sequencer_add.c
index 96e837eb95b..e4df13bc00c 100644
--- a/source/blender/editors/space_sequencer/sequencer_add.c
+++ b/source/blender/editors/space_sequencer/sequencer_add.c
@@ -123,7 +123,7 @@ static void sequencer_generic_invoke_xy__internal(bContext *C, wmOperator *op, w
 	
 	UI_view2d_region_to_view(v2d, event->mval[0], event->mval[1], &mval_v2d[0], &mval_v2d[1]);
 
-	/* effect strips dont need a channel initialized from the mouse */
+	/* effect strips don't need a channel initialized from the mouse */
 	if(!(flag & SEQPROP_NOCHAN)) {
 		RNA_int_set(op->ptr, "channel", (int)mval_v2d[1]+0.5f);
 	}
@@ -149,7 +149,7 @@ static void seq_load_operator_info(SeqLoadInfo *seq_load, wmOperator *op)
 	seq_load->end_frame=	seq_load->start_frame; /* un-set */
 
 	seq_load->channel=		RNA_int_get(op->ptr, "channel");
-	seq_load->len=			1; // images only, if endframe isnt set!
+	seq_load->len=			1; // images only, if endframe isn't set!
 
 	if(RNA_struct_find_property(op->ptr, "filepath")) {
 		RNA_string_get(op->ptr, "filepath", seq_load->path); /* full path, file is set by the caller */
diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c b/source/blender/editors/space_sequencer/sequencer_draw.c
index 1bbf4b670b5..a9c32b4dfde 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -72,7 +72,7 @@
 #define SEQ_RIGHTHANDLE	2
 
 
-/* Note, Dont use SEQ_BEGIN/SEQ_END while drawing!
+/* Note, Don't use SEQ_BEGIN/SEQ_END while drawing!
  * it messes up transform, - Campbell */
 static void draw_shadedstrip(Sequence *seq, unsigned char col[3], float x1, float y1, float x2, float y2);
 
diff --git a/source/blender/editors/space_sequencer/sequencer_edit.c b/source/blender/editors/space_sequencer/sequencer_edit.c
index 049e11a4f6a..62bbe09c4d8 100644
--- a/source/blender/editors/space_sequencer/sequencer_edit.c
+++ b/source/blender/editors/space_sequencer/sequencer_edit.c
@@ -409,7 +409,7 @@ Sequence *find_nearest_seq(Scene *scene, View2D *v2d, int *hand, const int mval[
 					handsize = seq->handsize;
 					displen = (float)abs(seq->startdisp - seq->enddisp);
 					
-					if (displen / pixelx > 16) { /* dont even try to grab the handles of small strips */
+					if (displen / pixelx > 16) { /* don't even try to grab the handles of small strips */
 						/* Set the max value to handle to 1/3 of the total len when its less then 28.
 						 * This is important because otherwise selecting handles happens even when you click in the middle */
 						
@@ -1051,7 +1051,7 @@ static int sequencer_snap_exec(bContext *C, wmOperator *op)
 	}
 
 	/* test for effects and overlap
-	 * dont use SEQP_BEGIN since that would be recursive */
+	 * don't use SEQP_BEGIN since that would be recursive */
 	for(seq= ed->seqbasep->first; seq; seq= seq->next) {
 		if(seq->flag & SELECT && !(seq->depth==0 && seq->flag & SEQ_LOCK)) {
 			seq->flag &= ~SEQ_OVERLAP;
@@ -1729,7 +1729,7 @@ static int sequencer_separate_images_exec(bContext *C, wmOperator *op)
 
 	while (seq) {
 		if((seq->flag & SELECT) && (seq->type == SEQ_IMAGE) && (seq->len > 1)) {
-			/* remove seq so overlap tests dont conflict,
+			/* remove seq so overlap tests don't conflict,
 			 * see seq_free_sequence below for the real free'ing */
 			BLI_remlink(ed->seqbasep, seq);
 			/* if(seq->ipo) seq->ipo->id.us--; */
@@ -1981,7 +1981,7 @@ static int sequencer_meta_separate_exec(bContext *C, wmOperator *UNUSED(op))
 	recurs_del_seq_flag(scene, ed->seqbasep, SEQ_FLAG_DELETE, 0);
 
 	/* test for effects and overlap
-	 * dont use SEQP_BEGIN since that would be recursive */
+	 * don't use SEQP_BEGIN since that would be recursive */
 	for(seq= ed->seqbasep->first; seq; seq= seq->next) {
 		if(seq->flag & SELECT) {
 			seq->flag &= ~SEQ_OVERLAP;
@@ -2871,7 +2871,7 @@ static int sequencer_change_effect_input_exec(bContext *C, wmOperator *op)
 
 	update_changed_seq_and_deps(scene, seq, 0, 1);
 
-	/* important else we dont get the imbuf cache flushed */
+	/* important else we don't get the imbuf cache flushed */
 	free_imbuf_seq(scene, &ed->seqbase, FALSE, FALSE);
 
 	WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);
@@ -2931,7 +2931,7 @@ static int sequencer_change_effect_type_exec(bContext *C, wmOperator *op)
 	/* update */
 	update_changed_seq_and_deps(scene, seq, 0, 1);
 
-	/* important else we dont get the imbuf cache flushed */
+	/* important else we don't get the imbuf cache flushed */
 	free_imbuf_seq(scene, &ed->seqbase, FALSE, FALSE);
 
 	WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);
@@ -2997,13 +2997,13 @@ static int sequencer_change_path_exec(bContext *C, wmOperator *op)
 		/* reset these else we wont see all the images */
 		seq->anim_startofs= seq->anim_endofs= 0;
 
-		/* correct start/end frames so we dont move
+		/* correct start/end frames so we don't move
 		 * important not to set seq->len= len; allow the function to handle it */
 		reload_sequence_new_file(scene, seq, TRUE);
 
 		calc_sequence(scene, seq);
 
-		/* important else we dont get the imbuf cache flushed */
+		/* important else we don't get the imbuf cache flushed */
 		free_imbuf_seq(scene, &ed->seqbase, FALSE, FALSE);
 	}
 	else {
diff --git a/source/blender/editors/space_sequencer/sequencer_select.c b/source/blender/editors/space_sequencer/sequencer_select.c
index 32ccccd84d0..44b83ba0694 100644
--- a/source/blender/editors/space_sequencer/sequencer_select.c
+++ b/source/blender/editors/space_sequencer/sequencer_select.c
@@ -536,7 +536,7 @@ void SEQUENCER_OT_select(wmOperatorType *ot)
 	/* properties */
 	RNA_def_boolean(ot->srna, "extend", 0, "Extend", "Extend the selection");
 	RNA_def_boolean(ot->srna, "linked_handle", 0, "Linked Handle", "Select handles next to the active strip");
-	/* for animation this is an enum but atm having an enum isnt useful for us */
+	/* for animation this is an enum but atm having an enum isn't useful for us */
 	RNA_def_boolean(ot->srna, "left_right", 0, "Left/Right", "Select based on the current frame side the cursor is on");
 	RNA_def_boolean(ot->srna, "linked_time", 0, "Linked Time", "Select other strips at the same time");
 }
diff --git a/source/blender/editors/space_text/text_draw.c b/source/blender/editors/space_text/text_draw.c
index e9062b052e6..1c8ff4639cf 100644
--- a/source/blender/editors/space_text/text_draw.c
+++ b/source/blender/editors/space_text/text_draw.c
@@ -1615,7 +1615,7 @@ static void draw_brackets(SpaceText *st, ARegion *ar)
 	find= -b;
 	stack= 0;
 	
-	/* Dont highlight backets if syntax HL is off or bracket in string or comment. */
+	/* Don't highlight backets if syntax HL is off or bracket in string or comment. */
 	if(!linep->format || linep->format[fc] == 'l' || linep->format[fc] == '#')
 		return;
 
@@ -1854,7 +1854,7 @@ void text_update_character_width(SpaceText *st)
 }
 
 /* Moves the view to the cursor location,
- * also used to make sure the view isnt outside the file */
+ * also used to make sure the view isn't outside the file */
 void text_scroll_to_cursor(SpaceText *st, ScrArea *sa)
 {
 	Text *text;
diff --git a/source/blender/editors/space_text/text_ops.c b/source/blender/editors/space_text/text_ops.c
index 17857275d36..2f6e5082fdc 100644
--- a/source/blender/editors/space_text/text_ops.c
+++ b/source/blender/editors/space_text/text_ops.c
@@ -598,7 +598,7 @@ static int text_run_script(bContext *C, ReportList *reports)
 		return OPERATOR_FINISHED;
 	}
 
-	/* Dont report error messages while live editing */
+	/* Don't report error messages while live editing */
 	if(!is_live) {
 		if(text->curl != curl_prev || curc_prev != text->curc) {
 			text_update_cursor_moved(C);
@@ -1109,7 +1109,7 @@ static int text_convert_whitespace_exec(bContext *C, wmOperator *op)
 		for(a=0; a < strlen(text_check_line); a++) { //foreach char in line
 			if(text_check_line[a] == '\t') { //checking for tabs
 				//get the number of spaces this tabs is showing
-				//i dont like doing it this way but will look into it later
+				//i don't like doing it this way but will look into it later
 				new_line[j] = '\0';
 				number = flatten_string(st, &fs, new_line);
 				flatten_string_free(&fs);
diff --git a/source/blender/editors/space_view3d/drawanimviz.c b/source/blender/editors/space_view3d/drawanimviz.c
index e15252056cc..545ec42e72f 100644
--- a/source/blender/editors/space_view3d/drawanimviz.c
+++ b/source/blender/editors/space_view3d/drawanimviz.c
@@ -79,7 +79,7 @@ void draw_motion_paths_init(View3D *v3d, ARegion *ar)
 }
 
 /* Draw the given motion path for an Object or a Bone 
- * 	- assumes that the viewport has already been initialised properly
+ * 	- assumes that the viewport has already been initialized properly
  *		i.e. draw_motion_paths_init() has been called
  */
 void draw_motion_path_instance(Scene *scene, 
@@ -210,7 +210,7 @@ void draw_motion_path_instance(Scene *scene,
 		UI_ThemeColor(TH_TEXT_HI);
 	}
 	
-	// XXX, this isnt up to date but probably should be kept so.
+	// XXX, this isn't up to date but probably should be kept so.
 	invert_m4_m4(ob->imat, ob->obmat);
 	
 	/* Draw frame numbers at each framestep value */
diff --git a/source/blender/editors/space_view3d/drawarmature.c b/source/blender/editors/space_view3d/drawarmature.c
index 373b665a84c..0f3110c478f 100644
--- a/source/blender/editors/space_view3d/drawarmature.c
+++ b/source/blender/editors/space_view3d/drawarmature.c
@@ -1864,7 +1864,7 @@ static void draw_pose_bones(Scene *scene, View3D *v3d, ARegion *ar, Base *base,
 			if (index != -1) 
 				index+= 0x10000;	// pose bones count in higher 2 bytes only
 		}
-		/* stick or wire bones have not been drawn yet so dont clear object selection in this case */
+		/* stick or wire bones have not been drawn yet so don't clear object selection in this case */
 		if (ELEM(arm->drawtype, ARM_LINE, ARM_WIRE)==0 && draw_wire) {
 			/* object tag, for bordersel optim */
 			glLoadName(index & 0xFFFF);	
diff --git a/source/blender/editors/space_view3d/drawobject.c b/source/blender/editors/space_view3d/drawobject.c
index 765114e2fb4..a8f5aff2e1c 100644
--- a/source/blender/editors/space_view3d/drawobject.c
+++ b/source/blender/editors/space_view3d/drawobject.c
@@ -193,7 +193,7 @@ static int check_ob_drawface_dot(Scene *sce, View3D *vd, char dt)
 	if ((vd->flag & V3D_ZBUF_SELECT) == 0)
 		return 1;
 
-	/* if its drawing textures with zbuf sel, then dont draw dots */
+	/* if its drawing textures with zbuf sel, then don't draw dots */
 	if (dt==OB_TEXTURE && vd->drawtype==OB_TEXTURE)
 		return 0;
 
@@ -2016,7 +2016,7 @@ static void drawlattice(Scene *scene, View3D *v3d, Object *ob)
 
 /* Note! - foreach funcs should be called while drawing or directly after
  * if not, ED_view3d_init_mats_rv3d() can be used for selection tools
- * but would not give correct results with dupli's for eg. which dont
+ * but would not give correct results with dupli's for eg. which don't
  * use the object matrix in the usual way */
 static void mesh_foreachScreenVert__mapFunc(void *userData, int index, float *co, float *UNUSED(no_f), short *UNUSED(no_s))
 {
@@ -2721,7 +2721,7 @@ static void draw_em_fancy_edges(BMEditMesh *em, Scene *scene, View3D *v3d,
 	UI_GetThemeColor4ubv(TH_WIRE, wireCol);
 	UI_GetThemeColor4ubv(TH_EDITMESH_ACTIVE, actCol);
 	
-	/* when sel only is used, dont render wire, only selected, this is used for
+	/* when sel only is used, don't render wire, only selected, this is used for
 	 * textured draw mode when the 'edges' option is disabled */
 	if (sel_only)
 		wireCol[3] = 0;
@@ -3084,7 +3084,7 @@ static void draw_em_fancy(Scene *scene, View3D *v3d, RegionView3D *rv3d,
 		glEnable(GL_BLEND);
 		glDepthMask(0);		// disable write in zbuffer, needed for nice transp
 		
-		/* dont draw unselected faces, only selected, this is MUCH nicer when texturing */
+		/* don't draw unselected faces, only selected, this is MUCH nicer when texturing */
 		if (CHECK_OB_DRAWTEXTURE(v3d, dt))
 			col1[3] = 0;
 		
@@ -3098,7 +3098,7 @@ static void draw_em_fancy(Scene *scene, View3D *v3d, RegionView3D *rv3d,
 		 * Make all other faces zero alpha except for the active
 		 * */
 		unsigned char col1[4], col2[4], col3[4];
-		col1[3] = col2[3] = 0; /* dont draw */
+		col1[3] = col2[3] = 0; /* don't draw */
 		UI_GetThemeColor4ubv(TH_EDITMESH_ACTIVE, col3);
 		
 		glEnable(GL_BLEND);
@@ -3113,7 +3113,7 @@ static void draw_em_fancy(Scene *scene, View3D *v3d, RegionView3D *rv3d,
 
 	/* here starts all fancy draw-extra over */
 	if ((me->drawflag & ME_DRAWEDGES)==0 && CHECK_OB_DRAWTEXTURE(v3d, dt)) {
-		/* we are drawing textures and 'ME_DRAWEDGES' is disabled, dont draw any edges */
+		/* we are drawing textures and 'ME_DRAWEDGES' is disabled, don't draw any edges */
 		
 		/* only draw selected edges otherwise there is no way of telling if a face is selected */
 		draw_em_fancy_edges(em, scene, v3d, me, cageDM, 1, eed_act);
@@ -3318,7 +3318,7 @@ static void draw_mesh_fancy(Scene *scene, ARegion *ar, View3D *v3d, RegionView3D
 
 			GPU_disable_material();
 			
-			/* since we already draw wire as wp guide, dont draw over the top */
+			/* since we already draw wire as wp guide, don't draw over the top */
 			draw_wire= OBDRAW_WIRE_OFF;
 		}
 		else if (draw_flags & DRAW_MODIFIERS_PREVIEW) {
@@ -5135,7 +5135,7 @@ static void tekenhandlesN(Nurb *nu, short sel, short hide_handles)
 	if (nu->type == CU_BEZIER) {
 
 #define TH_HANDLE_COL_TOT ((TH_HANDLE_SEL_FREE - TH_HANDLE_FREE) + 1)
-		/* use MIN2 when indexing to ensure newer files dont read outside the array */
+		/* use MIN2 when indexing to ensure newer files don't read outside the array */
 		unsigned char handle_cols[TH_HANDLE_COL_TOT][3];
 		const int basecol= sel ? TH_HANDLE_SEL_FREE : TH_HANDLE_FREE;
 
@@ -5510,7 +5510,7 @@ static void drawnurb(Scene *scene, View3D *v3d, RegionView3D *rv3d, Base *base,
 	if (v3d->zbuf) glEnable(GL_DEPTH_TEST);
 
 	/* direction vectors for 3d curve paths
-	 * when at its lowest, dont render normals */
+	 * when at its lowest, don't render normals */
 	if ((cu->flag & CU_3D) && (ts->normalsize > 0.0015f) && (cu->drawflag & CU_HIDE_NORMALS)==0) {
 
 		UI_ThemeColor(TH_WIRE);
@@ -6945,7 +6945,7 @@ void draw_object(Scene *scene, ARegion *ar, View3D *v3d, Base *base, int flag)
 			}
 			if (dtx & OB_DRAWNAME) {
 				/* patch for several 3d cards (IBM mostly) that crash on glSelect with text drawing */
-				/* but, we also dont draw names for sets or duplicators */
+				/* but, we also don't draw names for sets or duplicators */
 				if (flag == 0) {
 					float zero[3]= {0,0,0};
 					float curcol[4];
@@ -6999,7 +6999,7 @@ void draw_object(Scene *scene, ARegion *ar, View3D *v3d, Base *base, int flag)
 		int do_draw_center= -1;	/* defines below are zero or positive... */
 
 		if (v3d->flag2 & V3D_RENDER_OVERRIDE) {
-			/* dont draw */
+			/* don't draw */
 		}
 		else if ((scene->basact)==base)
 			do_draw_center= ACTIVE;
diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c
index 3d570252126..dbd4a4107f8 100644
--- a/source/blender/editors/space_view3d/view3d_draw.c
+++ b/source/blender/editors/space_view3d/view3d_draw.c
@@ -541,7 +541,7 @@ static void drawcursor(Scene *scene, ARegion *ar, View3D *v3d)
 	int mx, my, co[2];
 	int flag;
 	
-	/* we dont want the clipping for cursor */
+	/* we don't want the clipping for cursor */
 	flag= v3d->flag;
 	v3d->flag= 0;
 	project_int(ar, give_cursor(scene, v3d), co);
@@ -2097,7 +2097,7 @@ void draw_depth(Scene *scene, ARegion *ar, View3D *v3d, int (* func)(void *))
 		}
 	}
 	
-	/* this isnt that nice, draw xray objects as if they are normal */
+	/* this isn't that nice, draw xray objects as if they are normal */
 	if (	v3d->afterdraw_transp.first ||
 			v3d->afterdraw_xray.first || 
 			v3d->afterdraw_xraytransp.first
diff --git a/source/blender/editors/space_view3d/view3d_edit.c b/source/blender/editors/space_view3d/view3d_edit.c
index e27cd760c92..c04f352a5d0 100644
--- a/source/blender/editors/space_view3d/view3d_edit.c
+++ b/source/blender/editors/space_view3d/view3d_edit.c
@@ -476,7 +476,7 @@ static void viewops_data_create(bContext *C, wmOperator *op, wmEvent *event)
 		ED_view3d_win_to_vector(vod->ar, mval_f, vod->mousevec);
 	}
 
-	/* lookup, we dont pass on v3d to prevent confusement */
+	/* lookup, we don't pass on v3d to prevent confusement */
 	vod->grid= vod->v3d->grid;
 	vod->far= vod->v3d->far;
 
@@ -2202,7 +2202,7 @@ static int viewselected_exec(bContext *C, wmOperator *UNUSED(op))
 	size= MAX3(afm[0], afm[1], afm[2]);
 
 	if (!rv3d->is_persp) {
-		if (size < 0.0001f) { /* if its a sinble point. dont even re-scale */
+		if (size < 0.0001f) { /* if its a sinble point. don't even re-scale */
 			ok_dist= 0;
 		}
 		else {
@@ -2813,7 +2813,7 @@ static int viewnumpad_exec(bContext *C, wmOperator *op)
 						}
 					}
 
-					/* if the camera isnt found, check a number of options */
+					/* if the camera isn't found, check a number of options */
 					if (v3d->camera==NULL && ob && ob->type==OB_CAMERA)
 						v3d->camera= ob;
 					
@@ -2824,7 +2824,7 @@ static int viewnumpad_exec(bContext *C, wmOperator *op)
 					if (v3d->camera==NULL)
 						return OPERATOR_CANCELLED;
 					
-					/* important these dont get out of sync for locked scenes */
+					/* important these don't get out of sync for locked scenes */
 					if (v3d->scenelock)
 						scene->camera= v3d->camera;
 
diff --git a/source/blender/editors/space_view3d/view3d_fly.c b/source/blender/editors/space_view3d/view3d_fly.c
index 53b64b971aa..6e5a3b2dc54 100644
--- a/source/blender/editors/space_view3d/view3d_fly.c
+++ b/source/blender/editors/space_view3d/view3d_fly.c
@@ -813,7 +813,7 @@ static int flyApply(bContext *C, FlyInfo *fly)
 		/* scale the mouse movement by this value - scales mouse movement to the view size
 		 * moffset[0]/(ar->winx-xmargin*2) - window size minus margin (same for y)
 		 *
-		 * the mouse moves isnt linear */
+		 * the mouse moves isn't linear */
 
 		if (moffset[0]) {
 			moffset[0] /= ar->winx - (xmargin * 2);
@@ -834,7 +834,7 @@ static int flyApply(bContext *C, FlyInfo *fly)
 			float dvec_tmp[3];
 
 			/* time how fast it takes for us to redraw,
-			 * this is so simple scenes dont fly too fast */
+			 * this is so simple scenes don't fly too fast */
 			double time_current;
 			float time_redraw;
 			float time_redraw_clamped;
@@ -946,12 +946,12 @@ static int flyApply(bContext *C, FlyInfo *fly)
 						fly->zlock_momentum += FLY_ZUP_CORRECT_ACCEL;
 					}
 					else {
-						fly->zlock = 1; /* dont check until the view rotates again */
+						fly->zlock = 1; /* don't check until the view rotates again */
 						fly->zlock_momentum = 0.0f;
 					}
 				}
 
-				if (fly->xlock == 2 && moffset[1] == 0) { /*only apply xcorrect when mouse isnt applying x rot*/
+				if (fly->xlock == 2 && moffset[1] == 0) { /*only apply xcorrect when mouse isn't applying x rot*/
 					upvec[0] = 0;
 					upvec[1] = 0;
 					upvec[2] = 1;
diff --git a/source/blender/editors/space_view3d/view3d_header.c b/source/blender/editors/space_view3d/view3d_header.c
index 17f5ab68633..6e0a87977ee 100644
--- a/source/blender/editors/space_view3d/view3d_header.c
+++ b/source/blender/editors/space_view3d/view3d_header.c
@@ -527,7 +527,7 @@ void uiTemplateHeader3D(uiLayout *layout, struct bContext *C)
 		uiItemR(row, &v3dptr, "pivot_point", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
 
 		/* pose/object only however we want to allow in weight paint mode too
-		 * so dont be totally strict and just check not-editmode for now */
+		 * so don't be totally strict and just check not-editmode for now */
 		if (obedit == NULL) {
 			uiItemR(row, &v3dptr, "use_pivot_point_align", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
 		}
diff --git a/source/blender/editors/space_view3d/view3d_select.c b/source/blender/editors/space_view3d/view3d_select.c
index 3d1156c8ad1..a7c711968aa 100644
--- a/source/blender/editors/space_view3d/view3d_select.c
+++ b/source/blender/editors/space_view3d/view3d_select.c
@@ -529,7 +529,7 @@ static void do_lasso_select_mesh(ViewContext *vc, int mcords[][2], short moves,
 	if (extend == 0 && select)
 		EDBM_flag_disable_all(vc->em, BM_ELEM_SELECT);
 
-	 /* for non zbuf projections, dont change the GL state */
+	 /* for non zbuf projections, don't change the GL state */
 	ED_view3d_init_mats_rv3d(vc->obedit, vc->rv3d);
 
 	glLoadMatrixf(vc->rv3d->viewmat);
@@ -1086,7 +1086,7 @@ static EnumPropertyItem *object_select_menu_enum_itemf(bContext *C, PointerRNA *
 	int totitem= 0;
 	int i= 0;
 
-	/* dont need context but avoid docgen using this */
+	/* don't need context but avoid docgen using this */
 	if (C == NULL || object_mouse_select_menu_data[i].idname[0] == '\0') {
 		return DummyRNA_NULL_items;
 	}
@@ -1800,7 +1800,7 @@ static int do_mesh_box_select(ViewContext *vc, rcti *rect, int select, int exten
 	if (extend == 0 && select)
 		EDBM_flag_disable_all(vc->em, BM_ELEM_SELECT);
 
-	/* for non zbuf projections, dont change the GL state */
+	/* for non zbuf projections, don't change the GL state */
 	ED_view3d_init_mats_rv3d(vc->obedit, vc->rv3d);
 
 	glLoadMatrixf(vc->rv3d->viewmat);
diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c
index 88658b30662..7bd878351d9 100644
--- a/source/blender/editors/space_view3d/view3d_view.c
+++ b/source/blender/editors/space_view3d/view3d_view.c
@@ -145,7 +145,7 @@ void smooth_view(bContext *C, View3D *v3d, ARegion *ar, Object *oldcamera, Objec
 	 * we may be changing the view 'as if' there is no active camera, but infact
 	 * there is an active camera which is locked to the view.
 	 *
-	 * In the case where smooth view is moving _to_ a camera we dont want that
+	 * In the case where smooth view is moving _to_ a camera we don't want that
 	 * camera to be moved or changed, so only when the camera is not being set should
 	 * we allow camera option locking to initialize the view settings from the camera.
 	 */
@@ -1075,7 +1075,7 @@ static void obmat_to_viewmat(View3D *v3d, RegionView3D *rv3d, Object *ob, short
 	float bmat[4][4];
 	float tmat[3][3];
 	
-	rv3d->view= RV3D_VIEW_USER; /* dont show the grid */
+	rv3d->view= RV3D_VIEW_USER; /* don't show the grid */
 	
 	copy_m4_m4(bmat, ob->obmat);
 	normalize_m4(bmat);
@@ -1150,7 +1150,7 @@ int ED_view3d_lock(RegionView3D *rv3d)
 	return TRUE;
 }
 
-/* dont set windows active in here, is used by renderwin too */
+/* don't set windows active in here, is used by renderwin too */
 void setviewmatrixview3d(Scene *scene, View3D *v3d, RegionView3D *rv3d)
 {
 	if (rv3d->persp==RV3D_CAMOB) {	    /* obs/camera */
diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index c62bac7d5c7..4382889ff74 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -4665,7 +4665,7 @@ void projectSVData(TransInfo *t, int final)
 	
 	/* BMESH_TODO, (t->settings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT)
 	 * currently all vertex data is interpolated which is nice mostly
-	 * except for shape keys where you dont want to modify UVs for eg.
+	 * except for shape keys where you don't want to modify UVs for eg.
 	 * current BMesh code doesnt make it easy to pick which data we interpolate
 	 * - campbell */
 
diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index 595edf053b8..20a51945b95 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -1585,7 +1585,7 @@ static void createTransCurveVerts(bContext *C, TransInfo *t)
 				calc_distanceCurveVerts(head, tail-1);
 
 			/* TODO - in the case of tilt and radius we can also avoid allocating the initTransDataCurveHandles
-			 * but for now just dont change handle types */
+			 * but for now just don't change handle types */
 			if (ELEM(t->mode, TFM_CURVE_SHRINKFATTEN, TFM_TILT) == 0) {
 				/* sets the handles based on their selection, do this after the data is copied to the TransData */
 				testhandlesNurb(nu);
@@ -2337,7 +2337,7 @@ void flushTransSeq(TransInfo *t)
 			if(seq->depth==0) {
 				/* Calculate this strip and all nested strips
 				 * children are ALWAYS transformed first
-				 * so we dont need to do this in another loop. */
+				 * so we don't need to do this in another loop. */
 				calc_sequence(t->scene, seq);
 			}
 			else {
@@ -3838,7 +3838,7 @@ void flushTransGraphData(TransInfo *t)
 /* ******************* Sequencer Transform data ******************* */
 
 /* This function applies the rules for transforming a strip so duplicate
- * checks dont need to be added in multiple places.
+ * checks don't need to be added in multiple places.
  *
  * recursive, count and flag MUST be set.
  *
@@ -3918,7 +3918,7 @@ static void SeqTransInfo(TransInfo *t, Sequence *seq, int *recursive, int *count
 				/* Recursive */
 
 				if ((seq->type == SEQ_META) && ((seq->flag & (SEQ_LEFTSEL|SEQ_RIGHTSEL)) == 0)) {
-					/* if any handles are selected, dont recurse */
+					/* if any handles are selected, don't recurse */
 					*recursive = 1;
 				}
 				else {
@@ -3936,8 +3936,8 @@ static void SeqTransInfo(TransInfo *t, Sequence *seq, int *recursive, int *count
 #else
 			if (seq->type == SEQ_META) {
 				/* Meta's can only directly be moved between channels since they
-				 * dont have their start and length set directly (children affect that)
-				 * since this Meta is nested we dont need any of its data infact.
+				 * don't have their start and length set directly (children affect that)
+				 * since this Meta is nested we don't need any of its data infact.
 				 * calc_sequence() will update its settings when run on the toplevel meta */
 				*flag= 0;
 				*count= 0;
@@ -4732,7 +4732,7 @@ void autokeyframe_pose_cb_func(bContext *C, Scene *scene, View3D *v3d, Object *o
 		float cfra= (float)CFRA;
 		short flag= 0;
 		
-		/* flag is initialised from UserPref keyframing settings
+		/* flag is initialized from UserPref keyframing settings
 		 *	- special exception for targetless IK - INSERTKEY_MATRIX keyframes should get
 		 * 	  visual keyframes even if flag not set, as it's not that useful otherwise
 		 *	  (for quick animation recording)
@@ -5255,7 +5255,7 @@ void special_aftertrans_update(bContext *C, TransInfo *t)
 
 			/* recalculating the frame positions means we loose our original transform if its not auto-keyed [#24451]
 			 * this hack re-applies it, which is annoying, only alternatives are...
-			 * - dont recalc paths.
+			 * - don't recalc paths.
 			 * - have an object_handle_update() which gives is the new transform without touching the objects.
 			 * - only recalc paths on auto-keying.
 			 * - ED_objects_recalculate_paths could backup/restore transforms.
@@ -5991,7 +5991,7 @@ void createTransData(bContext *C, TransInfo *t)
 		 * transform ops redo clears sculpt/project undo stack.
 		 *
 		 * Could use 'OB_MODE_ALL_PAINT' since there are key conflicts,
-		 * transform + paint isnt well supported. */
+		 * transform + paint isn't well supported. */
 	}
 	else {
 		createTransObject(C, t);
diff --git a/source/blender/editors/uvedit/uvedit_ops.c b/source/blender/editors/uvedit/uvedit_ops.c
index c2568100ac2..501aa93cfa6 100644
--- a/source/blender/editors/uvedit/uvedit_ops.c
+++ b/source/blender/editors/uvedit/uvedit_ops.c
@@ -1044,7 +1044,7 @@ static int select_edgeloop(Scene *scene, Image *ima, BMEditMesh *em, NearestHit
 	starttotf= 0;
 	uv_edge_tag_faces(em, iterv1, iterv2, &starttotf);
 
-	/* sorry, first edge isnt even ok */
+	/* sorry, first edge isn't even ok */
 	if(iterv1->flag==0 && iterv2->flag==0) looking= 0;
 	else looking= 1;
 
@@ -1462,7 +1462,7 @@ static void weld_align_uv(bContext *C, int tool)
 			/* walk over edges, building an array of verts in a line */
 			while (eve) {
 				BLI_array_append(eve_line, eve);
-				/* dont touch again */
+				/* don't touch again */
 				BM_elem_flag_disable(eve, BM_ELEM_TAG);
 
 				eve_next = NULL;
@@ -1737,7 +1737,7 @@ static int mouse_select(bContext *C, float co[2], int extend, int loop)
 	NearestHit hit;
 	int i, select = 1, selectmode, sticky, sync, *hitv=NULL, nvert;
 	BLI_array_declare(hitv);
-	int flush = 0, hitlen=0; /* 0 == dont flush, 1 == sel, -1 == desel;  only use when selection sync is enabled */
+	int flush = 0, hitlen=0; /* 0 == don't flush, 1 == sel, -1 == desel;  only use when selection sync is enabled */
 	float limit[2], **hituv = NULL;
 	BLI_array_declare(hituv);
 	float penalty[2];