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       cloudlife - a cellular automaton based on Conway's Life


       cloudlife [-display host:display.screen] [-foreground color] [-background color] [-window]
       [-root] [-mono] [-install] [-visual visual] [-ncolors integer] [-cycle-delay microseconds]
       [-cycle-colors integer][-cell-size integer] [-initial-density integer] [-max-age integer]



       The cloudlife program draws a cellular automaton based on Conway's Life, except that cells
       have a maximum age, and only one pixel per cell is drawn every tick.


       cloudlife accepts the following options:

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

       -root   Draw on the root window.

       -mono   If on a color display, pretend we're on a monochrome display.

               Install a private colormap for the window.

       -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.

       -cycle-delay integer
               Time in microseconds to sleep between ticks.  Default 25000.

       -cycle-colors integer
               How  many ticks should elapse between cycling colors.  0 to disable color cycling.
               Default 2.

       -ncolors integer
               How many colors should be used (if possible).  Default 64.  The colors are  chosen

       -cell-size integer
               Size of each cell, in powers of 2.  Default 3 (8-pixel cells).

       -initial-density integer
               Percentage  of  cells  that  are alive at start and when the field is repopulated.
               Default 30.

       -max-age integer
               Maximum age for a cell.  Default 64.

       -fps    Display the current frame rate and CPU load.


       DISPLAY to get the default host and display number.

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


       X(1), xscreensaver(1), xlock(1)


       Copyright  ©  2003  by  Don  Marti.   Based  on  examples  from  the  hacks  directory  of
       xscreensaver, Copyright (c) 1997, 1998, 2002 Jamie Zawinski <>

       This man page based on the man page of sierpinski, Copyright © 1996 by Desmond Daignault.

       Permission to use, copy, modify, and distribute this software and  its  documentation  for
       any  purpose  and  without fee is hereby granted, provided that the above copyright notice
       appear in all copies and that both that copyright notice and this permission notice appear
       in supporting documentation.


       Don Marti <> 20 May 2003.