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+.TH XScreenSaver 1 "" "X Version 11"
+.SH NAME
+glschool - a 3D schooling simulation
+.SH SYNOPSIS
+.B glschool
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-wireframe]
+[\-fps]
+[\-delay \fInumber\fP]
+[\-nfish \fInumber\fP]
+[\-maxvel \fInumber\fP]
+[\-minvel \fInumber\fP]
+[\-acclimit \fInumber\fP]
+[\-avoidfact \fInumber\fP]
+[\-matchfact \fInumber\fP]
+[\-centerfact \fInumber\fP]
+[\-targetfact \fInumber\fP]
+[\-minradius \fInumber\fP]
+[\-momentum \fInumber\fP]
+[\-distexp \fInumber\fP]
+[\-goalchgf \fInumber\fP]
+[\-fog]
+[\-drawgoal]
+[\-drawbbox]
+.SH DESCRIPTION
+Uses Craig Reynolds Boids algorithm to simulate a 3d school of
+fish.  See <http://www.red3d.com/cwr/boids> for a description
+of the algorithm and the original paper.  This is a lightly modified
+version of the algorithm that supports goal attraction.
+
+Many different behaviors are possible by tweaking the parameters.  No sanity checking is performed
+on the command line params, so if you want to use negative accelerations or minimum velocity that is
+larger than maximum velocity or that sort of thing, the simulation will try to digest it.
+
+It looks best with the highest number of fish that will give you an FPS of > 25 or so.
+
+.SH OPTIONS
+.TP 8
+.B \-visual \fIvisual\fP
+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.
+.TP 8
+.B \-window
+Draw on a newly-created window.  This is the default.
+.TP 8
+.B \-root
+Draw on the root window.
+.TP 8
+.B \-delay \fInumber\fP
+Per-frame delay, in microseconds.  Default: 20000 (0.020 seconds.).
+.TP 8
+.B \-wireframe | \-no-wireframe
+Render in wireframe instead of solid.
+.TP 8
+.B \-fps
+Display the current frame rate, CPU load, and polygon count.
+.TP 8
+.B \-fog | \-no-fog
+ Whether to show foggy (cloudy) water.
+.TP 8
+.B \-drawgoal | \-no-drawgoal
+ Whether to show the school's attraction goal.
+.TP 8
+.B \-drawbbox | \-no-drawbbox
+ Whether to show the bounding box.
+.TP 8
+.B \-fog | \-no-fog
+ Whether to show foggy (cloudy) water.
+.TP 8
+.B \-nfish \fInumber\fP
+Number of fish.  Defaults to 100
+.TP 8
+.B \-acclimit \fInumber\fP
+Acceleration limit.  Defaults to 8.0
+.TP 8
+.B \-minvel \fInumber\fP
+Minimum velocity.  Defaults to 1.0
+.TP 8
+.B \-maxvel \fInumber\fP
+Minimum velocity.  Defaults to 7.0
+.TP 8
+.B \-goalchgf \fInumber\fP
+Goal change frequency.  Defaults to 50 (frames)
+.TP 8
+.B \-avoidfact \fInumber\fP
+Avoidance acceleration factor.  Defaults to 1.5
+.TP 8
+.B \-matchfact \fInumber\fP
+Match avg velocity acceleration factor.  Defaults to 0.15
+.TP 8
+.B \-centerfact \fInumber\fP
+School centering acceleration factor.  Defaults to 0.1
+.TP 8
+.B \-targetfact \fInumber\fP
+Target attraction acceleration factor.  Defaults to 80
+.TP 8
+.B \-distexp \fInumber\fP
+Distance weighting exponent.  Defaults to 2.2
+.TP 8
+.B \-momentum \fInumber\fP
+Momentum.  Defaults to 0.9
+.SH ENVIRONMENT
+.PP
+.TP 8
+.B DISPLAY
+to get the default host and display number.
+.TP 8
+.B XENVIRONMENT
+to get the name of a resource file that overrides the global resources
+stored in the RESOURCE_MANAGER property.
+.SH SEE ALSO
+.BR X (1),
+.BR xscreensaver (1)
+.SH COPYRIGHT
+Copyright \(co 2005-2006 by David C. Lambert.  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.
+.SH AUTHOR
+David C. Lambert