--- a/slides/slides01.tex	Tue Sep 26 14:38:45 2017 +0100
+++ b/slides/slides01.tex	Wed Sep 27 14:46:20 2017 +0100
@@ -33,9 +33,9 @@
   \end{tabular}}
 
   \begin{center}
-  \includegraphics[scale=0.3]{pics/ante1.jpg}\hspace{5mm}
-  \includegraphics[scale=0.31]{pics/ante2.jpg}\\
-  \footnotesize\textcolor{gray}{Antikythera automaton, 100 BC (Archimedes?)}
+  %\includegraphics[scale=0.3]{pics/ante1.jpg}\hspace{5mm}
+  %\includegraphics[scale=0.31]{pics/ante2.jpg}\\
+  %\footnotesize\textcolor{gray}{Antikythera automaton, 100 BC (Archimedes?)}
   \end{center}
 
 \normalsize
@@ -656,7 +656,7 @@
 
 \begin{bubble}[10cm]
 \large
-A regular expression \bl{$r$} matches a string \bl{$s$} 
+A regular expression \bl{$r$} matches a string~\bl{$s$} 
 provided
 
 \begin{center}