This file is indexed.

/usr/share/xscreensaver/config/cubenetic.xml is in xscreensaver-gl-extra 5.15-3ubuntu1.

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="cubenetic" _label="Cubenetic">

  <command arg="-root"/>

  <number id="delay" type="slider" arg="-delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="20000"
          convert="invert"/>

  <number id="count" type="slider" arg="-count %"
          _label="Boxes" _low-label="Few" _high-label="Many"
          low="1" high="20" default="5"/>

  <hgroup>
   <boolean id="wander" _label="Wander" arg-unset="-no-wander"/>

   <select id="rotation">
     <option id="no"  _label="Don't rotate"               arg-set="-spin 0"/>
     <option id="x"   _label="Rotate around X axis"       arg-set="-spin X"/>
     <option id="y"   _label="Rotate around Y axis"       arg-set="-spin Y"/>
     <option id="z"   _label="Rotate around Z axis"       arg-set="-spin Z"/>
     <option id="xy"  _label="Rotate around X and Y axes" arg-set="-spin XY"/>
     <option id="xz"  _label="Rotate around X and Z axes" arg-set="-spin XZ"/>
     <option id="yz"  _label="Rotate around Y and Z axes" arg-set="-spin YZ"/>
     <option id="xyz" _label="Rotate around all three axes"/>
   </select>
  </hgroup>

  <number id="wave-speed" type="slider" arg="-wave-speed %"
          _label="Surface pattern speed" _low-label="Slow" _high-label="Fast"
          low="5" high="150" default="80"/>

  <number id="wave-radius" type="slider" arg="-wave-radius %"
          _label="Surface pattern overlap"
          _low-label="Small" _high-label="Large"
          low="5" high="600" default="512"/>

  <number id="waves" type="slider" arg="-waves %"
          _label="Surface pattern complexity"
          _low-label="Low" _high-label="High"
          low="1" high="20" default="3"/>

  <hgroup>
   <boolean id="tex"     _label="Textured"  arg-unset="-no-texture"/>
   <boolean id="wire"    _label="Wireframe"   arg-set="-wireframe"/>
   <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
  </hgroup>

  <_description>
Draws a pulsating set of overlapping boxes with ever-chaning blobby
patterns undulating across their surfaces.  It's sort of a cubist Lavalite.

Written by Jamie Zawinski; 2002.
  </_description>
</screensaver>