src/ZF/Constructible/Separation.thy

--- a/src/ZF/Constructible/Separation.thy	Sun Nov 02 16:09:35 2014 +0100
+++ b/src/ZF/Constructible/Separation.thy	Sun Nov 02 16:39:54 2014 +0100
@@ -2,7 +2,7 @@
     Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
 *)
 
-header{*Early Instances of Separation and Strong Replacement*}
+section{*Early Instances of Separation and Strong Replacement*}
 
 theory Separation imports L_axioms WF_absolute begin