--- a/tphols-2011/ROOT.ML	Thu Jan 27 11:50:58 2011 +0000
+++ b/tphols-2011/ROOT.ML	Thu Jan 27 12:35:06 2011 +0000
@@ -2,7 +2,4 @@
   no_document use_thys ["This_Theory1", "This_Theory2"];
   use_thys ["That_Theory1", "That_Theory2", "That_Theory3"];
 *)
-        
-no_document use_thys ["../Prefix_subtract", "../Prelude"];
-
-use_thys ["../Myhill"];
+  use_thys ["../Myhill"];