Fix various typos

src/App/PropertyStandard.h

@@ -725,7 +725,7 @@ protected:
 };
 
 /** UUID properties
- * This property handles unique identifieers
+ * This property handles unique identifiers
  */
 class AppExport PropertyUUID: public Property
 {

src/Gui/Command.h

@@ -609,7 +609,7 @@ protected:
     /** @name Attributes
      *  Set by the inherited constructor to set up the most important properties
      *  of the command. In the Command constructor are set default values!
-     *  The real values should be set in the constructor of the inhereting class.
+     *  The real values should be set in the constructor of the inheriting class.
      */
     //@{
     const char* sAppModule;

src/Gui/TreeParams.h

@@ -356,7 +356,7 @@ public:
     //@{
     /// Accessor for parameter ItemBackground
     ///
-    /// Tree view item background. Only effecitve in overlay.
+    /// Tree view item background. Only effective in overlay.
     static const unsigned long & getItemBackground();
     static const unsigned long & defaultItemBackground();
     static void removeItemBackground();

src/Gui/TreeParams.py

@@ -66,7 +66,7 @@ Params = [
     ParamInt('FontSize', 0, on_change=True),
     ParamInt('ItemSpacing', 0, on_change=True),
     ParamHex('ItemBackground', 0, on_change=True, title='Item background color', proxy=ParamColor(),
-        doc = "Tree view item background. Only effecitve in overlay."),
+        doc = "Tree view item background. Only effective in overlay."),
     ParamInt('ItemBackgroundPadding', 10, on_change=True, title="Item background padding", proxy=ParamSpinBox(0, 100, 1),
         doc = "Tree view item background padding."),
     ParamBool('HideColumn', True, on_change=True, title="Hide extra column",

src/Gui/core-gui.dox

@@ -6,7 +6,7 @@
 /** \namespace Gui
     \brief The FreeCAD Graphical interface layer
 
-    This namespace includes the grafical interface of FreeCAD like:
+    This namespace includes the graphical interface of FreeCAD such as:
     - The main window
     - 3D View
     - Tree

src/Mod/Draft/draftguitools/gui_arcs.py

@@ -392,7 +392,7 @@ class Arc(gui_base_original.Creator):
             except Exception:
                 _err("Draft: error delaying commit")
 
-        # Finalize full circle or cirular arc
+        # Finalize full circle or circular arc
         self.finish(cont=None)
 
     def numericInput(self, numx, numy, numz):

src/Mod/Fem/App/FemConstraintFluidBoundary.cpp

@@ -61,7 +61,7 @@ static const char* ThermalBoundaryHelpTexts[] = {"fixed Temperature [K]", "no he
 
 ConstraintFluidBoundary::ConstraintFluidBoundary()
 {
-    /// momemtum boundary: pressure and velocity
+    /// momentum boundary: pressure and velocity
     ADD_PROPERTY_TYPE(BoundaryType,(1),"FluidBoundary",(App::PropertyType)(App::Prop_None),
                       "Basic boundary type like inlet, wall, outlet,etc");
     BoundaryType.setEnums(BoundaryTypes);

src/Mod/Mesh/Gui/Doxygen.cpp

@@ -25,7 +25,7 @@
 /*! \namespace MeshGui
     \brief The namespace of the Mesh Graphical interface layer library
 
-    This namespace includes the grafical interface of FreeCAD like:
+    This namespace includes the graphical interface of FreeCAD such as:
 	- The main window
 	- 3D View
 	- Tree

src/Mod/Robot/Gui/CommandInsertRobot.cpp

@@ -247,7 +247,7 @@ void CmdRobotAddToolShape::activated(int)
 
 bool CmdRobotAddToolShape::isActive()
 {
-    //return false; // not yet implemetned thus not active
+    //return false; // not yet implemented and thus not active
     return hasActiveDocument();
 }