--- a/preamble.tex	Fri May 28 08:12:35 2010 -0700
+++ b/preamble.tex	Fri May 28 13:06:58 2010 -0700
@@ -14,6 +14,7 @@
 \usepackage[section]{placeins}
 \usepackage{leftidx}
 \usepackage{stmaryrd} % additional math symbols, e.g. \mapsfrom
+\usepackage{microtype}
 
 \SelectTips{cm}{}
 % This may speed up compilation of complex documents with many xymatrices.