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       fluidballs - the physics of bouncing balls.

       fluidballs  [-display host:display.screen] [-visual visual] [-window] [-root] [-count num-
       ber] [-size number] [-gravity number] [-wind number] [-friction	number]  [-delay  number]
       [-nonrandom] [-no-shake] [-fps]

       Models  the physics of bouncing balls, or of particles in a gas or fluid, depending on the
       settings. If "Shake Box" is selected, then every now and then, the box  will  be  rotated,
       changing which direction is down (in order to keep the settled balls in motion.)

       -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.

       -count number
	       How many balls to display.  Default: 300.

       -size number
	       Maximum size of each ball.  Default: 25.

       -gravity number
	       Coefficient of gravity.	Useful values are < 0.1.  Default: 0.01.

       -wind number
	       Wind.  Useful values are < 0.1.	Default: 0.00.

       -friction number
	       Coefficient of friction (or viscosity.)	Useful values are < 4.	Default: 0.8.

       -delay number
	       Per-frame delay, in microseconds.  Default: 10000 (0.01 seconds.).

	       Make all balls be the same size.

	       Make the balls be random sizes.	Default.

       -shake | -no-shake
	       Whether to shake the box if the system seems to have settled down.  "Shake"  means
	       "change the direction of Down."

       -fps | -no-fps
	       Whether to show a frames-per-second display at the bottom of the screen.

       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 (C) 2002 by Peter Birtles and 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.

       Peter Birtles and Jamie Zawinski.

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