--- a/src/HOL/Library/Option_ord.thy Thu Jun 26 10:06:54 2008 +0200
+++ b/src/HOL/Library/Option_ord.thy Thu Jun 26 10:07:01 2008 +0200
@@ -6,7 +6,7 @@
header {* Canonical order on option type *}
theory Option_ord
-imports ATP_Linkup
+imports Plain
begin
instantiation option :: (order) order