--- a/src/HOL/UNITY/ROOT.ML Thu Aug 20 16:58:28 1998 +0200 +++ b/src/HOL/UNITY/ROOT.ML Thu Aug 20 17:43:01 1998 +0200 @@ -20,3 +20,4 @@ time_use_thy "FP"; time_use_thy "Reach"; time_use_thy "Handshake"; +time_use_thy "Lift";