This file is indexed.

/usr/share/xscreensaver/config/sundancer2.xml is in rss-glx 0.9.1-6ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="ISO-8859-1"?>

<screensaver name="sundancer2" _label="Sundancer2">

  <command arg="-r"/>

  <number id="01" type="spinbutton" arg="-q %"
          _label="Quad Count" low="1" high="300" default="150"/>

  <number id="02" type="slider" arg="-s %"
          _label="Speed" _low-label="Slower" _high-label="Faster"
          low="1" high="40" default="20"/>

  <number id="03" type="slider" arg="-t %"
          _label="Transparency" _low-label="Transparent" _high-label="Solid"
          low="1" high="100" default="75"/>

  <string id="04" _label="Foreground Color" arg="-f %" />

  <string id="05" _label="Background Color" arg="-b %" />

  <boolean id="06" _label="Reverse rotation occasionally" arg-set="-e"/>

  <_description>
Rotating stack of quads.

Specify colors using hex color codes (ie, ff0000, 00ff00, 0000ff for red, green and blue.)

Written by Dirk Songuer &lt;delax at sundancerinc.de&gt;
Ported to Linux by Tugrul Galatali - &lt;http://rss-glx.sourceforge.net/&gt;.
  </_description>
</screensaver>