diff --git a/doc/collisions.png b/doc/collisions.png
index 585465f9..cbadec53 100644
Binary files a/doc/collisions.png and b/doc/collisions.png differ
diff --git a/doc/collisions.svg b/doc/collisions.svg
index 5362a43b..b387990c 100644
--- a/doc/collisions.svg
+++ b/doc/collisions.svg
@@ -15,7 +15,10 @@
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-   sodipodi:docname="collisions-bg.png">
+   sodipodi:docname="collisions.svg"
+   inkscape:export-filename="collisions.png"
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+   inkscape:export-ydpi="90">
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@@ -51,21 +54,28 @@
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-     inkscape:zoom="1.0030731"
-     inkscape:cx="267.48677"
-     inkscape:cy="130.98231"
+     inkscape:zoom="0.50153655"
+     inkscape:cx="466.87403"
+     inkscape:cy="286.25514"
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      inkscape:window-y="0"
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   <image
+     sodipodi:absref="collisions-bg.png"
      xlink:href="collisions-bg.png"
-     width="640"
-     height="352"
-     id="image12"
-     x="0"
      y="0"
-     sodipodi:absref="collisions-bg.png" />
+     x="0"
+     id="image12"
+     height="352"
+     width="640" />
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+     width="192.40871"
+     height="28.911154"
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index 75b006f6..ea048111 100644
Binary files a/doc/layers.png and b/doc/layers.png differ
diff --git a/doc/layers.svg b/doc/layers.svg
index dc1e4181..dfe35200 100644
--- a/doc/layers.svg
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@@ -27,7 +27,7 @@
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         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
+        <dc:title />
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@@ -61,21 +61,21 @@
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-     inkscape:zoom="1.260697"
-     inkscape:cx="385.07269"
-     inkscape:cy="193.51002"
+     inkscape:zoom="0.8914474"
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+     inkscape:cy="382.5268"
      inkscape:window-x="0"
      inkscape:window-y="0"
      inkscape:window-maximized="0"
      inkscape:current-layer="svg2" />
   <image
-     sodipodi:absref="/home/sam/deushax/doc/layers-bg.png"
+     sodipodi:absref="layers-bg.png"
      xlink:href="layers-bg.png"
-     y="0"
-     x="0"
-     id="image12"
+     width="800"
      height="416"
-     width="800" />
+     id="image12"
+     x="0"
+     y="0" />
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      xml:space="preserve"
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@@ -153,6 +153,13 @@
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        sodipodi:role="line"
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+  <rect
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+     width="208.61476"
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