--- a/Attic/Prefix_subtract.thy Mon Oct 15 13:23:52 2012 +0000
+++ b/Attic/Prefix_subtract.thy Mon Dec 03 08:16:58 2012 +0000
@@ -1,5 +1,5 @@
theory Prefix_subtract
- imports Main "~~/src/HOL/Library/List_Prefix"
+ imports Main "../List_Prefix"
begin