--- a/preamble.tex Fri Jun 05 23:02:55 2009 +0000
+++ b/preamble.tex Sun Jun 07 00:51:00 2009 +0000
@@ -10,6 +10,8 @@
\usepackage[all,color]{xy}
%\fi
+\usepackage{leftidx}
+
\SelectTips{cm}{}
% This may speed up compilation of complex documents with many xymatrices.
%\CompileMatrices