This file is indexed.

/usr/share/xscreensaver/config/cwaves.xml is in xscreensaver-data 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="cwaves" _label="CWaves">

  <command arg="-root"/>

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

  <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="waves" type="slider" arg="-waves %"
          _label="Complexity" _low-label="Low" _high-label="High"
          low="1" high="100" default="15"/>

  <number id="ncolors" type="slider" arg="-colors %"
            _label="Color transitions" _low-label="Rough" _high-label="Smooth"
            low="2" high="1000" default="600"/>

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

  <xscreensaver-updater />

  <_description>
A field of sinusoidal colors languidly scrolls.  It's relaxing.

Written by Jamie Zawinski; 2007.
  </_description>
</screensaver>