--- a/src/Pure/ROOT.ML Tue Oct 14 17:34:21 1997 +0200 +++ b/src/Pure/ROOT.ML Tue Oct 14 17:34:36 1997 +0200 @@ -29,6 +29,7 @@ use "sorts.ML"; use "type_infer.ML"; use "type.ML"; +use "data.ML"; use "sign.ML"; use "sequence.ML"; use "envir.ML";