This file is indexed.

/usr/share/xscreensaver/config/rotzoomer.xml is in xscreensaver-data-extra 5.36-1ubuntu1.

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="rotzoomer" _label="RotZoomer">

  <command arg="-root"/>

  <video href="https://www.youtube.com/watch?v=ecl8ykLswX8"/>

  <number id="delay" type="slider" arg="-delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="10000" convert="invert"/>

  <number id="duration" type="slider" arg="-duration %"
          _label="Duration" _low-label="10 seconds" _high-label="10 minutes"
          low="10" high="600" default="120"/>

  <number id="n" type="spinbutton" arg="-n %"
          _label="Rectangle count" low="1" high="20" default="2"/>

  <select id="mode">
   <option id="random"     _label="Random"/>
   <option id="stationary" _label="Stationary rectangles" arg-set="-mode stationary"/>
   <option id="move"       _label="Wandering rectangles" arg-set="-mode move"/>
   <option id="sweep"      _label="Sweeping arcs"        arg-set="-mode sweep"/>
   <option id="circle"     _label="Rotating discs"       arg-set="-mode circle"/>
  </select>

  <boolean id="anim" _label="Animate" arg-unset="-no-anim"/>

<!--  <boolean id="shm" _label="Use shared memory" arg-unset="-no-shm"/> -->

  <xscreensaver-image />

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

  <xscreensaver-updater />

  <_description>
Distorts an image by rotating and scaling random sections of it.

Written by Claudio Matsuoka and Jamie Zawinski; 2001.
  </_description>
</screensaver>