This file is indexed.

/usr/share/xscreensaver/config/wander.xml is in xscreensaver-data-extra 5.15-2ubuntu1.

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="wander" _label="Wander">

  <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="density" type="slider" arg="-density %"
          _label="Density" _low-label="Low" _high-label="High"
          low="1" high="30" default="2"
          convert="invert"/>

  <number id="reset" type="slider" arg="-reset %"
          _label="Duration" _low-label="Short" _high-label="Long"
          low="10000" high="3000000" default="2500000"/>

  <number id="length" type="slider" arg="-length %"
          _label="Length" _low-label="Short" _high-label="Long"
          low="100" high="100000" default="25000"/>

  <hgroup>
    <boolean id="circles" _label="Draw spots" arg-set="-circles"/>

    <number id="size" type="spinbutton" arg="-size %"
             _label="Size" low="0" high="100" default="1"/>
  </hgroup>

  <number id="advance" type="slider" arg="-advance %"
          _label="Color contrast" _low-label="Low" _high-label="High"
          low="1" high="100" default="1"/>

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

  <_description>
Draws a colorful random-walk, in various forms.

http://en.wikipedia.org/wiki/Random_walk

Written by Rick Campbell; 1999.
  </_description>
</screensaver>