From 2dfbf88e0c591a8b0539b3035039ee8151152b22 Mon Sep 17 00:00:00 2001
From: bangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Tue, 4 Mar 2008 22:39:03 +0000
Subject: [PATCH] Add reference.

git-svn-id: https://svn.dealii.org/trunk@15851 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/lac/include/lac/block_sparsity_pattern.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/deal.II/lac/include/lac/block_sparsity_pattern.h b/deal.II/lac/include/lac/block_sparsity_pattern.h
index 8f54ee5cee..bffe05cb12 100644
--- a/deal.II/lac/include/lac/block_sparsity_pattern.h
+++ b/deal.II/lac/include/lac/block_sparsity_pattern.h
@@ -675,6 +675,8 @@ typedef BlockCompressedSparsityPattern CompressedBlockSparsityPattern;
  * BlockCompressedSetSparsityPattern) are interface-compatible it is
  * frequently worth checking which version is more efficient.
  *
+ * This class is used in @ref step_31 "step-31".
+ *
  * @author Wolfgang Bangerth, 2007
  */
 class BlockCompressedSetSparsityPattern : public BlockSparsityPatternBase<CompressedSetSparsityPattern>
-- 
2.39.5