Fix various typos and grammatical refinements

src/Mod/Part/App/TopoShape.cpp

@@ -239,7 +239,7 @@ const char* BRepBuilderAPI_FaceErrorText(BRepBuilderAPI_FaceError et)
         return "Parameters out of range";
 #if OCC_VERSION_HEX < 0x060500
     case BRepBuilderAPI_SurfaceNotC2:
-        return "Surface not C2-continous";
+        return "Surface not C2-continuous";
 #endif
     default:
         return "Unknown creation error";

src/Mod/PartDesign/App/FeatureHelix.cpp

@@ -510,7 +510,7 @@ double Helix::safePitch()
     double X = Xmax - Xmin, Y = Ymax - Ymin, Z = Zmax - Zmin;
     gp_Vec boundingBoxVec(X, Y, Z);
 
-    // Below is an approximation becaue since we take the bounding box it is
+    // Below is an approximation because since we take the bounding box it is
     // impossible to calculate it precisely. For example a circle has as bounding
     // box a square and thus results in a larger pitch than really necessary
 
@@ -518,7 +518,7 @@ double Helix::safePitch()
     double pitch0 = boundingBoxVec * direction;
 
     if (mode == HelixMode::height_turns_growth) {
-        // if the distange perpendicular to axisVec
+        // if the distance perpendicular to axisVec
         // between two turns is larger than the bounding box size in this direction
         // the minimal necessary pitch is zero
         if (abs(growthValue) > abs(boundingBoxVec * directionStart))
@@ -527,7 +527,7 @@ double Helix::safePitch()
             return pitch0;
     }
     else {
-        // if the angle is so large that the distange perpendicular to axisVec
+        // if the angle is so large that the distance perpendicular to axisVec
         // between two turns is larger than the bounding box size in this direction
         // the pitch can be smaller than pitch0
         if (tan(abs(angle)) * pitch0 > abs(boundingBoxVec * directionStart))

src/Mod/PartDesign/Gui/ReferenceSelection.cpp

@@ -77,7 +77,7 @@ bool ReferenceSelection::allow(App::Document* pDoc, App::DocumentObject* pObj, c
         return allowDatum(body, pObj);
     }
 
-    // The flag was used to be set. So, this block will never be treated and doesn't make really sense anyway
+    // The flag was used to be set. So, this block will never be treated and really doesn't make sense anyway
 #if 0
     if (!type.testFlag(AllowSelection::OTHERBODY)) {
         if (support == NULL)

src/Mod/Path/Generators/rotation_generator.py

@@ -135,13 +135,13 @@ def generate(normalVector, aMin=-360, aMax=360, cMin=-360, cMax=360, compound=Fa
     to align the vector the positive Y axis. Then around the X axis
     (A rotation).
 
-    The min and max arguments dictate the range of motion allowed rotation in the respective
-    axis.
-    Default assumes continous rotation.
+    The min and max arguments dictate the range of motion allowed rotation in
+    the respective axis.
+    Default assumes continuous rotation.
 
-    returns a list of path commands for the shortest valid solution
+    Returns a list of path commands for the shortest valid solution
 
-    if compound is False, axis moves will be broken out to individual commands
+    If compound is False, axis moves will be broken out to individual commands
 
     The normalVector input from a typical face (f) can be obtained like this:
 

src/Mod/Sketcher/App/GeoList.h

@@ -58,7 +58,7 @@ namespace Sketcher {
  *  Internal and external geometries are present in a single geometry vector one after the other.
  *
  * N.B.: Note that the index of the geomlist (all layers) and the GeoId can be converted
- * from each other at needed using the member fuctions (and sometimes the statics).
+ * from each other at needed using the member functions (and sometimes the statics).
  */
 template <typename T>
 class GeoListModel {

src/Mod/Sketcher/App/GeometryFacade.cpp

@@ -102,7 +102,7 @@ void GeometryFacade::initExtension()
 
 void GeometryFacade::initExtension() const
 {
-    // const Geometry without SketchGeometryExtension cannot initiliase a GeometryFacade
+    // const Geometry without SketchGeometryExtension cannot initialise a GeometryFacade
     assert(Geo->hasExtension(SketchGeometryExtension::getClassTypeId()));
 
     auto ext = std::static_pointer_cast<const SketchGeometryExtension>(Geo->getExtension(SketchGeometryExtension::getClassTypeId()).lock());