diff --git a/Doc/images/iomanager.png b/Doc/images/iomanager.png
new file mode 100644
index 00000000..668acddb
Binary files /dev/null and b/Doc/images/iomanager.png differ
diff --git a/Doc/images/src/iomanager.tex b/Doc/images/src/iomanager.tex
new file mode 100644
index 00000000..3d00091e
--- /dev/null
+++ b/Doc/images/src/iomanager.tex
@@ -0,0 +1,65 @@
+\documentclass{minimal}
+
+% Tikz
+\usepackage{pgf}
+\usepackage{tikz}
+
+\usetikzlibrary{calc,trees,positioning,arrows,chains,shapes.geometric,%
+    decorations.pathreplacing,decorations.pathmorphing,shapes,%
+    matrix,shapes.symbols,positioning}
+
+\tikzset{
+kiste/.style={
+    rectangle, 
+    rounded corners, 
+    % fill=black!10,
+    draw=black, very thick,
+    text width=10em, 
+    minimum height=3em, 
+    text centered},
+kkiste/.style={
+    rectangle, 
+    rounded corners, 
+    % fill=black!10,
+    draw=black, very thick,
+    text width=7em, 
+    minimum height=2em, 
+    text centered},
+}
+
+\begin{document}
+\begin{center}
+ \begin{tikzpicture}
+ 
+\node[kiste](IOM) at (0,0) {IOManager};
+\node[kiste,rotate=90](PD) at (-5,-4) {Persistent Data};
+\node[kiste,rotate=-90](DS) at (5,-4) {Data Structures};
+
+\path[fill=yellow!20,rounded corners,draw=black!50, dashed]
+     (-3.5,-2) rectangle (-0.5,-6);
+\path[fill=yellow!20,rounded corners,draw=black!50, dashed]
+     (.5,-2) rectangle (3.5,-6);
+
+\node[] at (-2,-2.5) {Reader/Writer};
+\node[kkiste] at (-2,-3.5) {OBJ};
+\node[] at (-2,-4.25) {$\vdots$};
+\node[kkiste] at (-2,-5.25) {Custom file format};
+
+\node[] at (2,-2.5) {Importer/Exporter};
+\node[kkiste] at (2,-3.5) {OpenMesh};
+\node[] at (2,-4.25) {$\vdots$};
+\node[kkiste] at (2,-5.25) {Custom data structure};
+
+\path [draw,thick,>=latex,<->] (-0.1,-0.6) -- (-2,-1.9) {};
+\path [draw,thick,>=latex,<->] (0.1,-0.6) -- (2,-1.9) {};
+
+\path [draw,thick,>=latex,->] (-4.4,-3.8) -- (-3.6,-3.8) {};
+\path [draw,thick,>=latex,<-] (-4.4,-4.2) -- (-3.6,-4.2) {};
+
+\path [draw,thick,>=latex,->] (4.4,-3.8) -- (3.6,-3.8) {};
+\path [draw,thick,>=latex,<-] (4.4,-4.2) -- (3.6,-4.2) {};
+
+\end{tikzpicture}
+\end{center}
+
+\end{document}
diff --git a/Doc/mesh.docu b/Doc/mesh.docu
index b7a25dd9..941d6713 100644
--- a/Doc/mesh.docu
+++ b/Doc/mesh.docu
@@ -636,7 +636,7 @@ an arbitrary data structure on the other side by means of reader/writer
 and importer/exporter modules. This is illustrated by the following
 diagramm :
 
-\image html iomanager.gif
+\image html iomanager.png
 
 <br>