diff -r 58ab885469f5 -r a7ba12e0d3b7 lib/Tools/unsymbolize
--- a/lib/Tools/unsymbolize	Tue Oct 21 20:17:40 2008 +0200
+++ b/lib/Tools/unsymbolize	Tue Oct 21 20:18:07 2008 +0200
@@ -13,7 +13,7 @@
 function usage()
 {
   echo
-  echo "Usage: $PRG [FILES|DIRS...]"
+  echo "Usage: isabelle $PRG [FILES|DIRS...]"
   echo
   echo "  Recursively find .thy/.ML files, removing unreadable symbol names."
   echo "  Note: this is an ad-hoc script; there is no systematic way to replace"