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+.TH XScreenSaver 1 "" "X Version 11"
+.SH NAME
+euler2d - two dimensional incompressible inviscid fluid flow.
+.SH SYNOPSIS
+.B euler2d
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-count \fInumber\fP]
+[\-eulertail \fInumber\fP]
+[\-cycles \fInumber\fP]
+[\-ncolors \fInumber\fP]
+[\-delay \fInumber\fP]
+[\-fps]
+.SH DESCRIPTION
+Simulates two dimensional incompressible inviscid fluid flow.
+.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 \-count \fInumber\fP
+Particles.  2 - 5000.  Default: 1024.
+.TP 8
+.B \-eulertail \fInumber\fP
+Trail Length.  2 - 500.  Default: 10.
+.TP 8
+.B \-cycles \fInumber\fP
+Duration.  100 - 5000.	Default: 3000.
+.TP 8
+.B \-ncolors \fInumber\fP
+Number of Colors.  Default: 64.
+.TP 8
+.B \-delay \fInumber\fP
+Per-frame delay, in microseconds.  Default: 10000 (0.01 seconds.).
+.TP 8
+.B \-fps
+Display the current frame rate and CPU load.
+.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 2002 by Stephen Montgomery-Smith.  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
+Stephen Montgomery-Smith.