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% beamer stuff 
\renewcommand{\slidecaption}{APP 03, King's College London, 8 October 2013}


\begin{document}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\mode<presentation>{
\begin{frame}[c]

Dear All,\medskip

While showing how to hack in the last lecture, I forgot to make an important announcement: the next lecture will be a guest lecture given by Richard Overill. He will present non-examinable material. I hope you still come. Richard is an expert in Cybercrime \& Cyberterrorism and often works with the Met Police Security Force. So he has first-hand knowledge about all sorts of hacking.\medskip

The lecture on the 22nd will be "normal" again given by me.  

\end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

\end{document}

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