diff --git a/Subdivision_method_3/doc/Subdivision_method_3/CGAL/Subdivision_method_3.h b/Subdivision_method_3/doc/Subdivision_method_3/CGAL/Subdivision_method_3.h
index ea2dedbbede..ed04eb0780a 100644
--- a/Subdivision_method_3/doc/Subdivision_method_3/CGAL/Subdivision_method_3.h
+++ b/Subdivision_method_3/doc/Subdivision_method_3/CGAL/Subdivision_method_3.h
@@ -27,8 +27,7 @@ and the \f$ \sqrt{3}\f$ triangulation.
 These refinements are respectively used in 
 Catmull-Clark, Loop, Doo-Sabin and \f$ \sqrt{3}\f$ subdivision. 
 
-Refinement Host 
--------------- 
+### Refinement Host ###
 
 A refinement host is a template function of 
 a polyhedron class and a geometry mask class. It refines 
@@ -38,8 +37,8 @@ the geometry masks.
 `PQQ`, `PTQ`, `DQQ` and `Sqrt3`. 
 
 \image html RefSchemes.gif
-Example 
--------------- 
+
+### Example ###
 
 This example program subdivides a polyhedral mesh with 
 Catmull-Clark subdivision.