lcdscrub - attempt to repair burn-in on LCD screens

       Inspired by the like-named program by Daniel Sandler.

       Written by Jamie Zawinski.

X Version 11                                   6.08 (10-Oct-2023)                                   lcdscrub(6x)

       Copyright © 2008 by Jamie Zawinski.  Permission to use, copy, modify, distribute, and sell this  software
       and  its  documentation  for any purpose is hereby granted without fee, provided that the above copyright
       notice appear in all copies and that both that copyright notice and  this  permission  notice  appear  in
       supporting  documentation.   No  representations  are made about the suitability of this software for any
       purpose.  It is provided "as is" without express or implied warranty.

       This screen saver is not meant to look pretty, but rather, to repair burn-in on LCD monitors.

       Believe it or not, screen burn is not a thing of the past.  It can happen to LCD screens  pretty  easily,
       even  in  this  modern age.  However, leaving the screen on and displaying high contrast images can often
       repair the damage.  That's what this screen saver does.

DISPLAY to get the default host and display number.

       XENVIRONMENT
               to  get  the  name  of  a  resource  file  that  overrides  the  global  resources  stored in the
               RESOURCE_MANAGER property.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

       lcdscrub - attempt to repair burn-in on LCD screens

--visualvisual
               Specify which visual to use.  Legal values are the name of a  visual  class,  or  the  id  number
               (decimal or hex) of a specific visual.

       --window
               Draw on a newly-created window.  This is the default.

       --root  Draw on the root window.

       --window-idnumber
               Draw on the specified window.

       --delaynumber
               Per-frame delay, in microseconds.  Default: 1000000 (1 second.).

       --spreadnumber
               Distance between lines.  Default 8.

       --cyclesnumber
               Steps before switching display mode.  Default 60.

       --fps   Display the current frame rate and CPU load.

X(1), xscreensaver(1),
       https://support.apple.com/de-at/HT2387
       https://web.archive.org/web/20080207220955/http%3A//toastycode.com/blog/2008/02/05/lcd-scrub/

lcdscrub  [--display  host:display.screen]  [--visual  visual]  [--window]  [--root] [--window-id number]
       [--delay number] [--spread number] [--cycles number] [--fps]