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NAME
     halo - draw circular patterns

SYNOPSIS
     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]  [-cycle]
     [-no-cycle] [-cycle-delay usecs]

DESCRIPTION
     The halo program draws cool patterns based on circles.

OPTIONS
     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
             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  ran-
             dom.

     -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.

     -animate
             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.

     -cycle

     -no-cycle
             Whether to  do  colormap  cycling.   Default  is  to
             cycle.

     -cycle-delay
             Number of microseconds between shifts of the  color-
             map; default 100000, or 1/10th second.

ENVIRONMENT
     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.

SEE ALSO
     X(1), xscreensaver(1)

COPYRIGHT
     Copyright O 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  permis-
     sion   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.

AUTHOR
     Jamie Zawinski <[email protected]>, 6-jul-93.

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