src/HOL/Quotient_Examples/DList.thy

--- a/src/HOL/Quotient_Examples/DList.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Quotient_Examples/DList.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -5,7 +5,7 @@
 and theory morphism version by Maksym Bortin
 *)
 
-header {* Lists with distinct elements *}
+section {* Lists with distinct elements *}
 
 theory DList
 imports "~~/src/HOL/Library/Quotient_List"