src/ZF/List_ZF.thy

--- a/src/ZF/List_ZF.thy	Sun Nov 02 16:09:35 2014 +0100
+++ b/src/ZF/List_ZF.thy	Sun Nov 02 16:39:54 2014 +0100
@@ -3,7 +3,7 @@
     Copyright   1994  University of Cambridge
 *)
 
-header{*Lists in Zermelo-Fraenkel Set Theory*}
+section{*Lists in Zermelo-Fraenkel Set Theory*}
 
 theory List_ZF imports Datatype_ZF ArithSimp begin