Doc update.

git-svn-id: https://svn.dealii.org/trunk@13047 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/include/dofs/dof_levels.h b/deal.II/deal.II/include/dofs/dof_levels.h
index 51b89f628721acc5324248a9cd3686c2aa7ef1a5..0001f692a3e31c6c431e89b2425aa31bf18fb3e6 100644 (file)
--- a/deal.II/deal.II/include/dofs/dof_levels.h
+++ b/deal.II/deal.II/include/dofs/dof_levels.h
@@ -24,7 +24,13 @@ template <int> class MGDoFHandler;
 
 namespace internal
 {
-
+/**
+ * A class that is used to disambiguate between functions of the same
+ * name but that operate on objects of different structural dimension.
+ * The class is only used in the interface between DoF accessors and
+ * the level information stored in the internal::DoFHandler::DoFLevel
+ * and internal::hp::DoFLevel classes.
+ */
   template <int structdim>
   struct StructuralDimension
   {};