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lcdscrub(6)		       XScreenSaver manual		     lcdscrub(6)

NAME
     lcdscrub - attempt to repair burn-in on LCD screens

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

DESCRIPTION
     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 dam-
     age.  That's what this screen saver does.

OPTIONS
     --visual visual
	     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-id number
	     Draw on the specified window.

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

     --spread number
	     Distance between lines.  Default 8.

     --cycles number
	     Steps before switching display mode.  Default 60.

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

ENVIRONMENT
     DISPLAY
	     to get the default host and display number.

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

     XSCREENSAVER_WINDOW
	     The window ID to use with --root.

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

COPYRIGHT
     Copyright	(C)  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  no-
     tice 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.

AUTHOR
     Inspired by the like-named program by Daniel Sandler.

     Written by Jamie Zawinski.

X Version 11		       6.15 (30-Mar-2026)		     lcdscrub(6)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=lcdscrub&sektion=6&manpath=FreeBSD+Ports+15.1.quarterly>

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