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diff --git a/hacks/config/voronoi.xml b/hacks/config/voronoi.xml
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+<?xml version="1.0" encoding="ISO-8859-1"?>
+
+<screensaver name="voronoi" _label="Voronoi" gl="yes">
+
+  <command arg="-root"/>
+
+  <video href="https://www.youtube.com/watch?v=hD_8cBvknUM"/>
+
+  <hgroup>
+   <vgroup>
+    <number id="delay" type="slider" arg="-delay %"
+            _label="Frame rate" _low-label="Slow" _high-label="Fast"
+            low="0" high="100000" default="20000"
+            convert="invert"/>
+
+    <number id="points" type="slider" arg="-points %"
+            _label="Points" _low-label="Few" _high-label="Many"
+            low="1" high="100" default="25"/>
+
+    <number id="pointSize" type="slider" arg="-point-size %"
+            _label="Point size" _low-label="0" _high-label="50 pixels"
+            low="0" high="50" default="9"/>
+
+    <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
+   </vgroup>
+
+   <vgroup>
+    <number id="pointSpeed" type="slider" arg="-point-speed %"
+            _label="Wander speed" _low-label="Slow" _high-label="Fast"
+            low="0.0" high="10.0" default="1.0"/>
+
+    <number id="pointDelay" type="slider" arg="-point-delay %"
+            _label="Insertion speed" _low-label="Slow" _high-label="Fast"
+            low="0.0" high="3.0" default="0.05"
+            convert="invert"/>
+
+    <number id="zoomSpeed" type="slider" arg="-zoom-speed %"
+            _label="Zoom speed" _low-label="Slow" _high-label="Fast"
+            low="0.1" high="10.0" default="1.0"/>
+
+    <number id="zoomDelay" type="slider" arg="-zoom-delay %"
+            _label="Zoom frequency" _low-label="0" _high-label="60 seconds"
+            low="0" high="60" default="15"/>
+   </vgroup>
+  </hgroup>
+
+  <xscreensaver-updater />
+
+  <_description>
+A Voronoi tessellation.  Periodically zooms in and adds new points.
+The existing points also wander around.
+
+There are a set of control points on the plane, each at the center of
+a colored cell.  Every pixel within that cell is closer to that cell's
+control point than to any other control point.  That is what
+determines the cell's shapes.
+
+https://en.wikipedia.org/wiki/Voronoi_diagram
+https://en.wikipedia.org/wiki/Tessellation
+
+Written by Jamie Zawinski; 2007.
+  </_description>
+</screensaver>