This file is indexed.

/usr/share/xscreensaver/config/wormhole.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="wormhole" _label="Wormhole">

  <command arg="-root"/>

  <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="zspeed" type="slider" arg="-zspeed %"
          _label="Star speed" _low-label="Slow" _high-label="Fast"
          low="1" high="30" default="10"/>

  <number id="stars" type="slider" arg="-stars %"
          _label="Stars created" _low-label="Few" _high-label="Lots"
          low="1" high="100" default="20"/>

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

  <_description>
Flying through a colored wormhole in space. 

Written by Jon Rafkind; 2004.
  </_description>
</screensaver>