This file is indexed.

/usr/share/xscreensaver/config/rocks.xml is in xscreensaver-data-extra 5.34-2ubuntu1.

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="rocks" _label="Rocks">

  <command arg="-root"/>

  <video href="http://www.youtube.com/watch?v=7x7PMI7LFK0"/>

  <number id="delay" type="slider" arg="-delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="50000"
          convert="invert"/>

  <number id="count" type="slider" arg="-count %"
          _label="Count" _low-label="Few" _high-label="Many"
           low="0" high="200" default="100"/>

  <number id="speed" type="slider" arg="-speed %"
          _label="Velocity" _low-label="Slow" _high-label="Fast"
          low="1" high="100" default="100"/>

  <hgroup>
    <boolean id="rotate" _label="Rotation" arg-unset="-no-rotate"/>
    <boolean id="steer" _label="Steering" arg-unset="-no-move"/>
    <boolean id="3d" _label="Do Red/Blue 3D separation" arg-set="-3d"/>
  </hgroup>

  <number id="ncolors" type="slider" arg="-colors %"
            _label="Number of colors" _low-label="Two" _high-label="Many"
            low="1" high="255" default="5"/>

  <!-- #### -delta3d [1.5] -->
  <!-- #### -left3d [Blue] -->
  <!-- #### -right3d [Red] -->

  <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>

  <xscreensaver-updater />

  <_description>
An asteroid field zooms by.

Written by Jamie Zawinski; 1992.
  </_description>
</screensaver>