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-.TH XScreenSaver 1 "" "X Version 11"
-.SH NAME
-unknownpleasures \- a waterfall graph of the signal from pulsar PSR B1919+21.
-.SH SYNOPSIS
-.B unknownpleasures
-[\-display \fIhost:display.screen\fP]
-[\-visual \fIvisual\fP]
-[\-window]
-[\-root]
-[\-delay \fInumber\fP]
-[\-count \fInumber\fP]
-[\-speed \fInumber\fP]
-[\-resolution \fInumber\fP]
-[\-amplitude \fInumber\fP]
-[\-noise \fInumber\fP]
-[\-mask \fIfile\fP]
-[\-no-ortho]
-[\-buzz]
-[\-wireframe]
-[\-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 \-resolution \fInumber\fP
-Horizontal Resolution, Default: 100.
-.TP 8
-.B \-amplitude \fInumber\fP
-Height of the waves, 0 - 1.0.  Default: 0.13.
-.TP 8
-.B \-noise \fInumber\fP
-How noisy the signal is. 2 for twice as noisy, 0.5 for half as noisy.
-.TP 8
-.B \-mask \fIfile\fP
-Use the given image file as a clipping mask against the data.
-A high contrast image of around 256x256 works best.
-Signal peaks appear in the dark areas.
-.TP 8
-.B \-ortho | \-no-ortho
-Whether to use an orthographic projection.
-.TP 8
-.B \-buzz | \-no-buzz
-Whether each line should seethe with noise.
-.TP 8
-.B \-wireframe | \-no-wireframe
-Render in wireframe instead of solid.
-.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 2013-2018 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.