--- a/coursework/cw02.tex	Wed Oct 19 08:46:50 2016 +0100
+++ b/coursework/cw02.tex	Sat Oct 22 13:11:33 2016 +0100
@@ -95,6 +95,15 @@
 \end{tabular}
 \end{center}
 
+\noindent
+Later on you will also need the record regular expressions:
+
+\begin{center}
+\begin{tabular}{ll}
+$REC(x:r)$ & record regular expression\\
+\end{tabular}
+\end{center}
+
 \noindent Try to design your regular expressions to be as
 small as possible. For example you should use character ranges
 for identifiers and numbers.
@@ -129,7 +138,7 @@
 \begin{tabular}{ll}
 regex: & string:\smallskip\\
 $a^{\{3\}}$ & $aaa$\\
-$(a + \epsilon)^{\{3\}}$ & $aa$
+$(a + \ONE)^{\{3\}}$ & $aa$
 \end{tabular}
 \end{center}