src/HOL/Library/Diagonal_Subsequence.thy

--- a/src/HOL/Library/Diagonal_Subsequence.thy	Sun Nov 02 17:16:01 2014 +0100
+++ b/src/HOL/Library/Diagonal_Subsequence.thy	Sun Nov 02 17:20:45 2014 +0100
@@ -1,6 +1,6 @@
 (* Author: Fabian Immler, TUM *)
 
-header {* Sequence of Properties on Subsequences *}
+section {* Sequence of Properties on Subsequences *}
 
 theory Diagonal_Subsequence
 imports Complex_Main