diff --git a/documentation/qudio/images/curb.png b/documentation/qudio/images/curb.png
index 64e476f..f9b3c8c 100644
Binary files a/documentation/qudio/images/curb.png and b/documentation/qudio/images/curb.png differ
diff --git a/documentation/qudio/misc/curb.svg b/documentation/qudio/misc/curb.svg
index e587b39..fd4c250 100644
--- a/documentation/qudio/misc/curb.svg
+++ b/documentation/qudio/misc/curb.svg
@@ -15,8 +15,11 @@
    viewBox="0 0 210 297"
    version="1.1"
    id="svg8"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)"
-   sodipodi:docname="curb.svg">
+   sodipodi:docname="curb.svg"
+   inkscape:export-filename="/home/tilman/git/piplayer/documentation/qudio/images/curb.png"
+   inkscape:export-xdpi="500.05264"
+   inkscape:export-ydpi="500.05264"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)">
   <defs
      id="defs2" />
   <sodipodi:namedview
@@ -26,9 +29,9 @@
      borderopacity="1.0"
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="2.8"
-     inkscape:cx="467.34703"
-     inkscape:cy="594.92782"
+     inkscape:zoom="3.959798"
+     inkscape:cx="402.19144"
+     inkscape:cy="610.48993"
      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
      showgrid="false"
@@ -45,7 +48,6 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
       </cc:Work>
     </rdf:RDF>
   </metadata>
@@ -53,6 +55,16 @@
      inkscape:label="Ebene 1"
      inkscape:groupmode="layer"
      id="layer1">
+    <rect
+       style="opacity:1;fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.16500001;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect985"
+       width="53.587543"
+       height="50.447124"
+       x="85.20623"
+       y="109.77644"
+       inkscape:export-filename="/home/tilman/git/piplayer/documentation/qudio/images/curb.png"
+       inkscape:export-xdpi="500"
+       inkscape:export-ydpi="500" />
     <rect
        style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.49999997;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
        id="rect815"