--- a/text/ncat.tex	Thu Aug 11 12:08:38 2011 -0600
+++ b/text/ncat.tex	Thu Aug 11 12:50:46 2011 -0700
@@ -1685,7 +1685,7 @@
 \end{lem}
 Again, this is in exact analogy with Lemma \ref{lem:domain-and-range}, and illustrated in Figure \ref{fig:module-boundary}.
 \begin{figure}[t]
-\tikzset{marked/.style={line width=5pt}}
+\tikzset{marked/.style={line width=3pt}}
 
 \begin{equation*}
 \begin{tikzpicture}[baseline=0]