diff -r 6061ae1f90f2 -r 9bc16273c2d4 src/ZF/Ordinal.thy
--- a/src/ZF/Ordinal.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/ZF/Ordinal.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -7,7 +7,7 @@
 
 header{*Transitive Sets and Ordinals*}
 
-theory Ordinal = WF + Bool + equalities:
+theory Ordinal imports WF Bool equalities begin
 
 constdefs