From http://www.jwz.org/xscreensaver/xscreensaver-5.25.tar.gz

[xscreensaver] / hacks / glx / atunnel.man

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+.de EX         \"Begin example
+.ne 5
+.if n .sp 1
+.if t .sp .5
+.nf
+.in +.5i
+..
+.de EE
+.fi
+.in -.5i
+.if n .sp 1
+.if t .sp .5
+..
+.TH XScreenSaver 1 "12-Feb-03" "X Version 11"
+.SH NAME
+atunnel - hypnotic GL tunnel journey
+.SH SYNOPSIS
+.B sballs
+[\-display \fIhost:display.screen\fP] [\-window] [\-root]
+[\-visual \fIvisual\fP] [\-delay \fImicroseconds\fP]
+[\-light] [\-no-light]
+[\-wire] [\-no-wire]
+[\-texture] [\-no-texture]
+[\-fps]
+.SH DESCRIPTION
+The \fIatunnel\fP program draws an animation of a journey in a GL tunnel.
+.SH OPTIONS
+.I sballs
+accepts the following options:
+.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 \-install
+Install a private colormap for the window.
+.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 \-fps
+Display the current frame rate, CPU load, and polygon count.
+.TP 8
+.B \-texture
+Show a textured tunnel. This is the default.
+.TP 8
+.B \-no\-texture
+Disables texturing the animation.
+.TP 8
+.B \-wire
+Draw a wireframe rendition of the tunnel.
+.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 2003 by Eric Lassauge.
+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.
+
+The original code for this mode was written by 
+Roman Podobedov <romka@ut.ee>
+and can be found at http://romka.demonews.com
+
+.SH AUTHOR
+Roman Podobedov <romka@ut.ee> 
+Eric Lassauge <lassauge@users.sourceforge.net>