--- a/src/HOL/Isar_examples/HoareEx.thy Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/Isar_examples/HoareEx.thy Fri Jun 17 16:12:49 2005 +0200
@@ -1,7 +1,7 @@
header {* Using Hoare Logic *}
-theory HoareEx = Hoare:
+theory HoareEx imports Hoare begin
subsection {* State spaces *}