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

[xscreensaver] / hacks / glx / unknownpleasures.man

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+.TH XScreenSaver 1 "" "X Version 11"
+.SH NAME
+unknownpleasures - an animation of the signal from the pulsar PSR B1919+21.
+.SH SYNOPSIS
+.B unknownpleasures
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-delay \fInumber\fP]
+[\-speed \fIpercent\fP]
+[\-count \fIinteger\fP]
+[\-resolution \fIpercent\fP]
+[\-no-ortho]
+[\-fps]
+.SH DESCRIPTION
+PSR B1919+21 (AKA CP 1919) was the first pulsar ever discovered: a spinning
+neutron star emitting a periodic lighthouse-like beacon. An illustration of
+the signal received from it was published in Scientific American in 1971,
+and later in The Cambridge Encyclopedia of Astronomy in 1977, where it was
+seen by Stephen Morris, the drummer of Joy Division, and was consequently
+appropriated by Peter Saville for the cover of the band's album "Unknown
+Pleasures".
+.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: 30000 (0.03 seconds.).
+.TP 8
+.B \-speed \fInumber\fP
+Animation speed. 2 for twice as fast, 0.5 for half as fast.
+.TP 8
+.B \-count \fInumber\fP
+Scanlines (vertical resolution).  Default: 80.
+.TP 8
+.B \-count \fInumber\fP
+Horizontal Resolution, Default: 100%.
+.TP 8
+.B \-ortho | \-no-ortho
+Whether to use an orthographic projection.
+.TP 8
+.B \-fps | \-no-fps
+Whether to show a frames-per-second display at the bottom of the screen.
+.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 2013 by 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.
+.SH AUTHOR
+Jamie Zawinski.