diff -r 9537bf1c4853 -r 5b7a9633cfa8 src/HOL/ex/While_Combinator_Example.thy
--- a/src/HOL/ex/While_Combinator_Example.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/ex/While_Combinator_Example.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
     Copyright   2000 TU Muenchen
 *)
 
-header {* An application of the While combinator *}
+section {* An application of the While combinator *}
 
 theory While_Combinator_Example
 imports "~~/src/HOL/Library/While_Combinator"