--- a/slides/slides02.tex	Wed Oct 02 01:02:50 2013 +0100
+++ b/slides/slides02.tex	Wed Oct 02 01:16:30 2013 +0100
@@ -1011,6 +1011,25 @@
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{c}Regular Expressions\end{tabular}}
+
+\begin{itemize}
+\item symbols, digits
+\item identifiers
+\item numbers (non-leading zeros)
+\item keywords
+\item comments
+\end{itemize}\bigskip
+
+
+\mbox{}\hfill\bl{\url{http://www.regexper.com}}
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{