Spelling corrections

After review

Nef_2/include/CGAL/Nef_2/gen_point_location.h

@@ -345,7 +345,7 @@ public:
 /*{\Mtypes}*/
   // define additional types
   typedef GenericLocation<Node, Edge> Location;
-  /*{\Mtypedef usual return value for the point loction.}*/
+  /*{\Mtypedef usual return value for the point location.}*/
 
   enum Direction { downwards, upwards};
   /*{\Menum used to specify the direction for the point location.}*/

Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/triangulate_hole.h

@@ -410,7 +410,7 @@ namespace Polygon_mesh_processing {
     \cgalParamNEnd
 
     \cgalParamNBegin{density_control_factor}
-      \cgalParamDescription{factor to control density of the otuput mesh,
+      \cgalParamDescription{factor to control density of the output mesh,
                             where larger values cause denser refinements, as in `refine()`}
       \cgalParamType{double}
       \cgalParamDefault{\f$ \sqrt{2}\f$}

Polyhedron/demo/Polyhedron/Plugins/Three_examples/Example_plugin.cpp

@@ -109,7 +109,7 @@ void Scene_triangle_item::draw(CGAL::Three::Viewer_interface* viewer) const
   }
 
   //set the uniform properties for the TriangleContainer.
-  //Uniform values are setd at each draw call and are defined for the whole item.
+  //Uniform values are set at each draw call and are defined for the whole item.
   //Values per simplex are computed as buffers in ComputeElements() and bound in initializeBuffers().
   getTriangleContainer(0)->setColor(this->color());
   getTriangleContainer(0)->draw(viewer, true);

Polyhedron/demo/Polyhedron/include/Point_set_3.h

@@ -34,7 +34,7 @@
 /// - User is responsible to call invalidate_bounds() after adding, moving or removing points.
 /// - Selecting points changes the order of the points in the
 ///   container. If selection is *not* empty, it becomes invalid after
-///   adding, moving or removing points, user is responsible to call
+///   adding, moving or removing points, the user is responsible for calling
 ///   unselect_all() in those cases.
 ///
 /// @heading Parameters:

Polynomial/include/CGAL/Polynomial/resultant.h

@@ -46,7 +46,7 @@ namespace CGAL {
 // The implementation uses interpolatation for multivariate polynomials
 // Due to the recursive structuture of CGAL::Polynomial<Coeff> it is better
 // to write the function such that the inner most variable is eliminated.
-// However,  CGAL::internal::resultant(F,G) eliminates the outer most variabl.
+// However,  CGAL::internal::resultant(F,G) eliminates the outer most variable.
 // This is due to backward compatibility issues with code base on EXACUS.
 // In turn CGAL::internal::resultant_(F,G) eliminates the innermost variable.