diff --git a/programming/exercises/scripts_functions.tex b/programming/exercises/scripts_functions.tex
index 652a88c..2b3282a 100644
--- a/programming/exercises/scripts_functions.tex
+++ b/programming/exercises/scripts_functions.tex
@@ -16,7 +16,7 @@
 %%%%% text size %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \usepackage[left=20mm,right=20mm,top=25mm,bottom=25mm]{geometry}
 \pagestyle{headandfoot}
-\header{{\bfseries\large \"Ubung 5}}{{\bfseries\large Scripts and functions}}{{\bfseries\large 07. November, 2017}}
+\header{{\bfseries\large Exercise 6}}{{\bfseries\large Scripts and functions}}{{\bfseries\large 06. November, 2018}}
 \firstpagefooter{Prof. Jan Benda}{Phone: 29 74 573}{Email:
   jan.benda@uni-tuebingen.de}
 \runningfooter{}{\thepage}{}
@@ -46,7 +46,6 @@
   aboveskip=10pt
 }
 
-
 \newcommand{\code}[1]{\texttt{#1}}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@@ -60,7 +59,7 @@
 \end{center}
 
 The exercises are meant for self-monitoring and revision of the
-lecture topic. You should try to solve them on your own. In contrast
+lecture. You should try to solve them on your own. In contrast
 to previous exercises, the solutions can not be saved in a single file
 but each question needs an individual file. Combine the files into a
 single zip archive and submit it via ILIAS. Name the archive according
@@ -108,7 +107,7 @@ to the pattern: ``scripts\_functions\_\{surname\}.zip''.
 
     \part{}
     Improve the function that it takes the duration of the time axis,
-    the amplitude and the frequency as input arguments. The
+    the amplitude, and the frequency as input arguments. The
     calculation should use a temporal stepsize that is 0.01 of the
     frequency.
     \begin{solution}
@@ -144,7 +143,8 @@ to the pattern: ``scripts\_functions\_\{surname\}.zip''.
   \question Random Walk.  In a 1-D random walk an \emph{agent} walks
   randomly either in the one ($+1$) or the other ($-1$)
   direction. With each simulation step one direction is chosen and the
-  position is updated accordingly.
+  position is updated accordingly. \textbf{There are some differences
+    to the solution discussed in the lecture!}
 
   \begin{parts}
     \part{}
@@ -172,7 +172,7 @@ to the pattern: ``scripts\_functions\_\{surname\}.zip''.
     Now we want to know how the probability of $p_{+1}$ (the
     probability to walk into the $+1$ direction) impacts the random
     walk. Vary $p_{+1}$ in the range $0.5 \le p_{+1} < 0.8$. Do 10
-    random walks for four probabilities (apply the same thresholds for
+    random walks for the four probabilities (apply the same thresholds for
     stopping the simulations as before).
     \begin{solution}
       \lstinputlisting{randomwalkscriptc.m}