CONTRIBUTORS

--- a/CONTRIBUTORS	Wed May 02 21:55:13 2012 +0200
+++ b/CONTRIBUTORS	Wed May 02 22:05:59 2012 +0200
@@ -3,6 +3,10 @@
 who is listed as an author in one of the source files of this Isabelle
 distribution.
 
+Contributions to this Isabelle version
+--------------------------------------
+
+
 Contributions to Isabelle2012
 -----------------------------