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       halo - draw circular patterns


       halo  [-display  host:display.screen]  [-foreground  color]  [-background color] [-window]
       [-root] [-mono] [-install] [-visual visual] [-count int] [-delay  usecs]  [-mode  seuss  |
       ramp | random ] [-animate] [-colors integer] [-fps]


       The halo program draws cool patterns based on circles.


       halo 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.

       -count integer
               How many circles to draw.  Default 0, meaning random.

       -mode seuss | ramp | random
               In seuss mode, alternating striped curves will be drawn.

               In ramp mode, a color ramp will be drawn.

               random means pick the mode randomly.

       -delay microseconds
               How much of a delay should be introduced between steps of the animation.   Default
               100000, or about 0.1 second.

       -colors integer
               How many colors to use.  Default 100.

               If specified, then the centerpoints of the circles will bounce around.  Otherwise,
               the circles will be drawn once, erased, and a new set of circles will be drawn.

       -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)


       Copyright © 1993 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.


       Jamie Zawinski <>, 6-jul-93.