diff --git a/pointprocesses/exercises/pointprocesses01.tex b/pointprocesses/exercises/pointprocesses01.tex
index ce2a417..b9d02a2 100644
--- a/pointprocesses/exercises/pointprocesses01.tex
+++ b/pointprocesses/exercises/pointprocesses01.tex
@@ -88,7 +88,7 @@ jan.benda@uni-tuebingen.de}
 
 \begin{questions}
 
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
   \question \qt{Statistics of interspike intervals}
   Download the files \code{poisson.mat},
   \code{pifou.mat}, and \code{lifadapt.mat} from Ilias.  
@@ -100,7 +100,7 @@ jan.benda@uni-tuebingen.de}
   \begin{parts}
     \part Load the spike trains from the three files.
     Make sure that the data are assigned to different variables. 
-
+    
     What is the type of the data? How can you access individual spike trains?
     How do you access single spike times?
     \begin{solution}
@@ -192,7 +192,14 @@ jan.benda@uni-tuebingen.de}
       \lstinputlisting{../code/plotserialcorr.m}
       \colorbox{white}{\includegraphics[width=1\textwidth]{serialcorr}}
     \end{solution}
+    
+  \end{parts}
 
+  \continue
+  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+  \question \qt{Statistics of spike counts}
+  Now let's have a look ath the statistics of the spike counts.
+  \begin{parts}
     \part Write a function that counts and returns the number of
     spikes in windows of a given width $W$.