diff -r 6061ae1f90f2 -r 9bc16273c2d4 doc-src/ZF/FOL_examples.thy
--- a/doc-src/ZF/FOL_examples.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/doc-src/ZF/FOL_examples.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -1,6 +1,6 @@
 header{*Examples of Classical Reasoning*}
 
-theory FOL_examples = FOL:
+theory FOL_examples imports FOL begin
 
 lemma "EX y. ALL x. P(y)-->P(x)"
   --{* @{subgoals[display,indent=0,margin=65]} *}