--- a/slides/slides03.tex	Tue Oct 03 22:43:03 2017 +0100
+++ b/slides/slides03.tex	Sun Oct 08 23:49:40 2017 +0100
@@ -42,8 +42,10 @@
   \begin{itemize}
   \item homework, slides, programs are on KEATS
   \item include the question text  
-  \item please send the homework as PDF (or txt)\bigskip    
-  \item survey at the end  
+  \item please send the homework as PDF (or txt)\bigskip
+  \item exam 90\%, q's from homeworks (work in pairs)
+  \item coursework 10\% \bigskip  
+  \item survey at KEATS; to be answered until Sunday  
   \end{itemize}
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -281,6 +283,17 @@
 \begin{frame}[c]
 \frametitle{Behind the Scenes}
 
+\only<1>{
+\begin{textblock}{7}(3,3)
+\begin{bubble}[6.8cm]
+\footnotesize
+\lstinputlisting[language=C,
+                 xleftmargin=5mm,
+                 belowskip=-1mm,
+                 aboveskip=-1mm]{../progs/example1.c} 
+\end{bubble}
+\end{textblock}}
+
 \only<2->{
 \begin{textblock}{7}(1,0.6)
 \begin{bubble}[6.8cm]
@@ -480,7 +493,7 @@
 \frametitle{Payloads}
 
 \begin{itemize}
-\item the idea is that you store some code in the buffer (the payload)
+\item the idea is that you store some code in the buffer (the ``payload'')
 \item you then override the return address to execute this payload\medskip
 \item normally you want to start a shell\pause
 \item difficulty is to guess the right place where to ``jump''