diff -r 9f12e53eb121 -r e73ccbed776e ProgTutorial/Intro.thy
--- a/ProgTutorial/Intro.thy	Mon Oct 19 02:02:21 2009 +0200
+++ b/ProgTutorial/Intro.thy	Mon Oct 19 14:10:42 2009 +0200
@@ -25,7 +25,8 @@
   \medskip
   If your next project requires you to program on the ML-level of Isabelle,
   then this tutorial is for you. It will guide you through the first steps of
-  Isabelle programming, and also explain tricks of the trade. The best way to
+  Isabelle programming, and also explain tricks of the trade. We also hope
+  the tutorial will encourage researchers to play with Isabelle. The best way to
   get to know the ML-level of Isabelle is by experimenting with the many code
   examples included in the tutorial. The code is as far as possible checked
   against the Isabelle distribution.\footnote{\input{version}} If something does not work,