diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/ex/Transitive_Closure_Table_Ex.thy
--- a/src/HOL/ex/Transitive_Closure_Table_Ex.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/ex/Transitive_Closure_Table_Ex.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -1,6 +1,6 @@
 (* Author: Stefan Berghofer, Lukas Bulwahn, TU Muenchen *)
 
-header {* Simple example for table-based implementation of the reflexive transitive closure *}
+section {* Simple example for table-based implementation of the reflexive transitive closure *}
 
 theory Transitive_Closure_Table_Ex
 imports "~~/src/HOL/Library/Transitive_Closure_Table"