Add a few more words.

git-svn-id: https://svn.dealii.org/trunk@9686 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/include/fe/fe_dgq.h b/deal.II/deal.II/include/fe/fe_dgq.h
index 0abe17bba30fc498b5d8d5ff40738a019bee9960..de703360f07e734178146509af2e014596ede6ac 100644 (file)
--- a/deal.II/deal.II/include/fe/fe_dgq.h
+++ b/deal.II/deal.II/include/fe/fe_dgq.h
@@ -59,6 +59,12 @@ template <int dim> class MappingQ;
  *     0---1---2        0---1---2
  *  @endverbatim
  *
+ * Note, however, that these are just the Lagrange interpolation
+ * points of the shape functions. Even though they may physically be
+ * on the surface of the cell, they are logically in the interior
+ * since there are no continuity requirements for these shape
+ * functions across cell boundaries.
+ *
  * @author Ralf Hartmann, 2001, 2004, Guido Kanschat 2001
  */
 template <int dim>