libXss provides an X Window System client interface to the MIT-SCREEN-SAVER
extension to the X protocol.
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The Screen Saver extension allows clients behaving as screen savers to
register themselves with the X server, to better integrate themselves with
the running session.
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More information about X.Org can be found at:
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This module can be found at
git://anongit.freedesktop.org/git/xorg/lib/libScrnSaver