diff --git a/presentation.tex b/presentation.tex
index b27d478522910a7334b2c70e94d86f223c41f7df..dca1362b7af9ef82226d2c50ac5c64b17eb0ec89 100644
--- a/presentation.tex
+++ b/presentation.tex
@@ -30,57 +30,67 @@
 \bodytemplate
 
 % First page of the presentation.
-\section{Introduction}
-\begin{frame}
-  \frametitle{Title of this frame.}
-  First line.
- 
-  \pause
- 
-  Second line.
-\end{frame}
-
-\begin{fframe}
-  \frametitle{Title of this frame.}
-
-  \vfill
-\end{fframe}
-
-\section{Topic2}
-\begin{frame}
+\section{Short introduction}
+\subsection{Titles and subtitles}
+\begin{pframe}
+  Notice the title and subtitle:
   \begin{itemize}
-    \item Item 1.
-    \item Item 2.
-    \pause
-    \item Item 3.
-    \pause
-    \begin{itemize}
-      \item Subitem 1.
-    \end{itemize}
+    \item The \emph{section} command controls the title.
+    \item The \emph{subsection} command controls the frametitle.
   \end{itemize}
-\end{frame}
+\end{pframe}
 
-\begin{frame}
-  The second slide in the same section.
-\end{frame}
+\begin{pframe}
+  The titles are retained until overwritten.
+  \bigskip
+  \pause
+  
+  Notice the footer is present on all overlays.
+  \vfill
+  \permfoot{https://git.lumc.nl/j.f.j.laros/presentation/tree/master}
+\end{pframe}
 
-\begin{frame}[fragile]
-  And an example of displaying code, mind the [fragile] option.
+\subsection{Code}
+\begin{pframe}
+  A \emph{pframe} does not need to be declared fragile.
 
   \begin{lstlisting}[caption={Example input}]
     print "Hello"
   \end{lstlisting}
-\end{frame}
+\end{pframe}
+
+\subsection{Two columns}
+\begin{pframe}
+  \begin{minipage}[t]{0.47\textwidth}
+    \begin{figure}
+      \begin{center}
+        Picture goes here.
+      \end{center}
+      \caption{Some picture.}
+    \end{figure}
+  \end{minipage}
+  \hfill
+  \begin{minipage}[t]{0.47\textwidth}
+    Sometimes it is convenient to have two columns.
+    \begin{itemize}
+      \item Pictures can be too high.
+      \item You may have multiple small pictures.
+      \item \ldots
+    \end{itemize}
+  \end{minipage}
+\end{pframe}
 
 \section{Questions?}
 \lastpagetemplate
-\begin{frame}
+\begin{pframe}
   \begin{center}
     Acknowledgements:
     \bigskip
     \bigskip
 
+    Perhaps acknowledge the author of this template.
+
   \end{center}
-\end{frame}
+\end{pframe}
 
 \end{document}