diff -r 4c54ef4dc84d -r 0fea8b7a14a1 ProgTutorial/Recipes/USTypes.thy
--- a/ProgTutorial/Recipes/USTypes.thy	Mon Oct 12 17:07:17 2009 +0200
+++ b/ProgTutorial/Recipes/USTypes.thy	Tue Oct 13 22:57:25 2009 +0200
@@ -1,6 +1,6 @@
 
 theory USTypes
-imports Main
+imports "../Appendix"
 begin