--- a/handouts/ho01.tex	Thu Nov 13 11:25:28 2014 +0000
+++ b/handouts/ho01.tex	Sun Nov 16 17:12:34 2014 +0000
@@ -4,6 +4,7 @@
 \usepackage{../graphics}
 \usepackage{../data}
 
+%%http://regexcrossword.com/challenges/cities/puzzles/1
 
 \begin{document}