This file is indexed.

/usr/share/xscreensaver/config/pixelcity.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="pixelcity" _label="Pixel City">

  <command arg="-r"/>

  <select id="01">
    <option id="01A" _label="Effect Bloom"/>
    <option id="01B" _label="Effect Bloom Radial" arg-set="-B"/>
    <option id="01C" _label="Effect Glass" arg-set="-g"/>
    <option id="01D" _label="Effect Color Cycle" arg-set="-c"/>
    <option id="01E" _label="Effect None" arg-set="-n"/>
  </select>

  <boolean id="02" _label="Wire frame" arg-set="-w"/>

  <boolean id="03" _label="No fog" arg-set="-F"/>

  <boolean id="04" _label="Letter box" arg-set="-l"/>

  <_description>
Procedural city fly through.

Written by Shamus Young &lt;shamus -at- shamusyoung dot com&gt;.
Ported to Linux by Tugrul Galatali - &lt;http://rss-glx.sourceforge.net/&gt;.
  </_description>
</screensaver>