diff -r 0baae4311a9f -r b9556a055632 src/HOL/Library/Indicator_Function.thy
--- a/src/HOL/Library/Indicator_Function.thy	Sun Nov 02 17:16:01 2014 +0100
+++ b/src/HOL/Library/Indicator_Function.thy	Sun Nov 02 17:20:45 2014 +0100
@@ -2,7 +2,7 @@
     Author:     Johannes Hoelzl (TU Muenchen)
 *)
 
-header {* Indicator Function *}
+section {* Indicator Function *}
 
 theory Indicator_Function
 imports Complex_Main