Fixed DW comments.

diff --git a/examples/step-54/doc/intro.dox b/examples/step-54/doc/intro.dox
index 4a1c84eb6c697d37384e8a42ae0d4fe19af73570..136d2459f47741cba3f71e6620c8b679eacbd29e 100644 (file)
--- a/examples/step-54/doc/intro.dox
+++ b/examples/step-54/doc/intro.dox
@@ -66,9 +66,10 @@ the OpenCASCADE framework. From a <code>TopoDS_Shape</code>, it is then possible
 to access all the sub-shapes (such as vertices, edges and faces) composing it,
 along with their geometrical description. In the deal.II framework, the
 topological entities composing a shape are used to create a corresponding
-Manifold representation. In step-6 we saw how to build a hyper sphere, which is
-automatically assigned a SphericalManifold to its boundary faces, to have them
-refined on a sphere or on a circle. The functions of the CAD modeling interface
+Manifold representation. In step-6 we saw how to use GridGenerator::hyper_sphere() 
+to create a hyper sphere, which automatically attaches a SphericalManifold
+to all boundary faces. This guarantees that boundary faces stay on a
+sphere or circle during mesh refinement. The functions of the CAD modeling interface
 have been designed to retain the same structure, allowing the user to build a
 projector object using the imported CAD shapes, maintaining the same procedure
 we used in other tutorial programs, i.e., assigning such projector object to