This file is indexed.

/usr/share/xscreensaver/config/helios.xml is in rss-glx 0.9.1-5ubuntu2.

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="helios" _label="Helios">

  <command arg="-r"/>

  <number id="01" type="spinbutton" arg="-i %"
          _label="Number of ions" low="0" high="30000" default="1500"/>

  <number id="02" type="slider" arg="-s %"
          _label="Ion size" _low-label="Smaller" _high-label="Larger"
          low="1" high="100" default="10"/>

  <number id="03" type="slider" arg="-e %"
          _label="Number of emitters" _low-label="Less" _high-label="More"
          low="1" high="10" default="3"/>

  <number id="04" type="slider" arg="-a %"
          _label="Number of attracters" _low-label="Less" _high-label="More"
          low="1" high="10" default="3"/>

  <number id="05" type="slider" arg="-S %"
          _label="Animation speed" _low-label="Slower" _high-label="Faster"
          low="1" high="100" default="10"/>

  <number id="06" type="slider" arg="-c %"
          _label="Camera speed" _low-label="Slower" _high-label="Faster"
          low="0" high="100" default="10"/>

  <number id="07" type="slider" arg="-b %"
          _label="Motion blur" _low-label="Less" _high-label="More"
          low="0" high="100" default="10"/>

  <boolean id="08" _label="Helion surfaces" arg-unset="-U"/>
  <boolean id="09" _label="Wireframe" arg-set="-w"/>

  <_description>
Attraction/repulsion particle effects and some smooth implicit surfaces.

Written by Terry Welsh &lt;mogumbo at totalmail.com&gt;.
Ported to Linux by Tugrul Galatali - &lt;http://rss-glx.sourceforge.net/&gt;.
Config Files by Curtis Haas.
  </_description>
</screensaver>