--- a/handouts/ho03.tex	Tue Nov 04 12:35:41 2014 +0000
+++ b/handouts/ho03.tex	Wed Nov 05 12:01:05 2014 +0000
@@ -3,7 +3,6 @@
 \usepackage{../langs}
 \usepackage{../graphics}
 \usepackage{../data}
-\usetikzlibrary{patterns,decorations.pathreplacing}
 
 \begin{document}