--- a/handouts/ho06.tex	Fri Nov 07 00:25:59 2014 +0000
+++ b/handouts/ho06.tex	Fri Nov 07 00:27:25 2014 +0000
@@ -153,6 +153,7 @@
 she needs a protocol that anticipate his call, and already go
 into this tunnel. 
 
+\subsubsection*{Using an Graph-Isomorphism Problem for ZKPs}
 
 \end{document}