diff -r ea47c3b8f35f -r dfd0f41f8668 hws/hw02.tex
--- a/hws/hw02.tex	Thu Aug 03 01:21:19 2017 +0100
+++ b/hws/hw02.tex	Mon Sep 18 14:02:46 2017 +0100
@@ -8,7 +8,9 @@
 \HEADER
 
 \begin{enumerate}
-
+\item What is the difference between \emph{basic} regular expressions  
+      and \emph{extended} regular expressions?
+  
 \item What is the language recognised by the regular
       expressions $(\ZERO^*)^*$.