diff -r 3b9496db3fb9 -r 3390e863d796 hws/hw02.tex
--- a/hws/hw02.tex	Tue Sep 26 14:07:29 2017 +0100
+++ b/hws/hw02.tex	Tue Sep 26 14:08:49 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 $(\ZERO^*)^*$.