--- a/src/HOL/Isar_examples/ROOT.ML Tue Apr 27 13:05:52 1999 +0200 +++ b/src/HOL/Isar_examples/ROOT.ML Tue Apr 27 15:10:36 1999 +0200 @@ -9,3 +9,5 @@ use_thy "Peirce"; use_thy "Cantor"; use_thy "ExprCompiler"; +use_thy "NatSum"; +