--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/Extraction/ROOT.ML	Sun Jul 21 15:44:42 2002 +0200
@@ -0,0 +1,13 @@
+(*  Title:      HOL/Extraction/ROOT.ML
+    ID:         $Id$
+
+Examples for program extraction in Higher-Order Logic.
+*)
+
+if HOL_proofs < 2 then
+  warning "HOL proof terms required for running extraction examples"
+else
+  (proofs := 2;
+   time_use_thy "QuotRem";
+   time_use_thy "Warshall";
+   time_use_thy "Higman");