--- a/preamble.tex	Mon Jun 30 13:02:57 2008 +0000
+++ b/preamble.tex	Mon Jun 30 20:20:52 2008 +0000
@@ -19,6 +19,11 @@
 \hfuzz2pt % Don't report over-full h-boxes if over-edge is small
 % ----------------------------------------------------------------
 
+\def\RCS$#1: #2 ${\expandafter\def\csname RCS#1\endcsname{#2}}
+\RCS$Revision$ \RCS$Date: 2008-06-26 14:07:57 -0700 (Thu, 26 Jun
+2008) $
+\newcommand{\versioninfo}{Version \RCSRevision; Last commit \RCSDate}
+
 % diagrams -------------------------------------------------------
 % figures ---------------------------------------------------------
 %%% borrowed from Dror's cobordisms paper, use this to include eps or pdf graphics.