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NAME
     slip - sucks your screen into a jet engine

SYNOPSIS
     slip  [-display  host:display.screen]  [-foreground   color]
     [-background  color]  [-window]  [-root]  [-mono] [-install]
     [-visual visual] [-ncolors  integer]  [-iterations  integer]
     [-points    integer]    [-delay    microseconds]    [-delay2
     microseconds]

DESCRIPTION
     The slip program does lots of blits and chews up your screen
     image.

OPTIONS
     slip 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.

     -ncolors integer
             How  many  colors  should  be  used  (if  possible).
             Default 128.  The colors used cycle through the hue,
             making N stops around the color wheel.

     -count integer
             How many whooziwhatsis to generate.  Default 35.

     -cycles integer
             How long to frobnicate.  Default 50.

     -delay microseconds
             How long we should wait between drawing  each  step.
             Default 50000, or about 1/20th second.


RESOURCES
     On some systems (currently, only SGIs),  this  program  can,
     instead  of  grabbing a desktop image, grab a frame of video
     from an external camera and manipulate  that  instead.   The
     following resources control that.

     grabVideoProbability (Float)
             What portion of the time to grab video rather than a
             screen image, between 0.0 and 1.0.  Defaults to 0.5,
             or half the time.

     videoDevice (Integer)
             The number of the  default  video  input  device  to
             check  first.   If  unspecified,  the default camera
             (from videopanel(1)) will be checked  first.   After
             that,  all  other available video input devices will
             be checked in order.

             The first one which produces a non-black image  will
             be  used.   If all images are black, the others will
             be re-checked a few times before giving up and  fal-
             ling  back  to  simply grabbing a desktop image (but
             note that this takes a few seconds, so if you  don't
             actually  have  any  video  sources  hooked  up, you
             should consider turning off video grabbing  by  set-
             ting grabVideoProbability to 0.0.)

     videoGain (Float)
             The amount by which to brighten the  grabbed  image.
             This defaults to 2.2.

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), xlock(1)

COPYRIGHT
     Copyright O 1992 by Scott Draves.

     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 docu-
     mentation.

AUTHOR
     Scott Graves <spot@cs.cmu.edu>.

     Ability to run standalone  or  with  xscreensaver  added  by
     Jamie Zawinski <jwz@jwz.org>, 18-Oct-93.

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