--- a/slides/slides01.tex	Thu Sep 26 11:08:34 2019 +0100
+++ b/slides/slides01.tex	Thu Sep 26 12:59:33 2019 +0100
@@ -100,6 +100,9 @@
   \node (0) at (-2.3,0) {\includegraphics[scale=0.3]{pics/csource.png}};
   \node (1) [right=35mm] at (0) {\includegraphics[scale=0.3]{pics/cassmbl.png}}; 
   \draw [->,line width=4mm, red] (0) -- (1);   
+  \node (2) [below=25mm] at (0) {\LARGE\bf``source''};
+  \node (3) [right=35mm] at (2) {\LARGE\bf``binary''};
+  \draw [->,line width=1mm] (2) -- (3);   
 \end{tikzpicture}
 \end{center}
 
@@ -223,8 +226,8 @@
 \end{columns}\bigskip
 
 \small\centering
-matching \texttt{[a?]\{n\}[a]\{n\}} and \texttt{(a*)*b}
-against $\underbrace{\texttt{a}...\texttt{a}}_n$
+matching \bl{\texttt{[a?]\{n\}[a]\{n\}}} and \bl{\texttt{(a*)*b}}
+against \bl{$\underbrace{\texttt{a}...\texttt{a}}_n$}
 \end{frame} 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%