Add references to tutorial programs.

git-svn-id: https://svn.dealii.org/trunk@19227 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/include/grid/filtered_iterator.h b/deal.II/deal.II/include/grid/filtered_iterator.h
index effe6f6dd173076bed4f39a5a43340a9fbc8e1f2..35eb72911116844bd958298b1396ff1d320ece19 100644 (file)
--- a/deal.II/deal.II/include/grid/filtered_iterator.h
+++ b/deal.II/deal.II/include/grid/filtered_iterator.h
@@ -208,6 +208,9 @@ namespace IteratorFilters
  * called with a pair of iterators denoting a range on which they
  * shall act, by choosing a filtered iterator instead of usual ones.
  *
+ * This class is used in @ref step_18 "step-18" and
+ * @ref step_32 "step-32".
+ *
  *
  * <h3>Predicates</h3>
  *