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+.TH XScreenSaver 1 "" "X Version 11"
+.SH NAME
+Hacking the Gibson - screen saver.
+.SH SYNOPSIS
+.B gibson
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-delay \fInumber\fP]
+[\-speed \fInumber\fP]
+[\-grid-width \fInumber\fP]
+[\-grid-depth \fInumber\fP]
+[\-grid-height \fInumber\fP]
+[\-grid-spacing \fInumber\fP]
+[\-columns \fInumber\fP]
+[\-no-texture]
+[\-wireframe]
+[\-fps]
+.SH DESCRIPTION
+Hacking the Gibson, as per the 1995 classic film, \fIHACKERS\fP.
+
+"Hackers penetrate and ravage delicate public and privately owned
+computer systems, infecting them with viruses, and stealing materials
+for their own ends. These people, they are terrorists."
+.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 (0.02 seconds).
+.TP 8
+.B \-speed \fInumber\fP
+Animation speed.  2.0 means twice as fast, 0.5 means half as fast.
+.TP 8
+.B \-grid-width \fInumber\fP
+Number of towers across.  1 - 20.  Default: 10.
+.TP 8
+.B \-grid-depth \fInumber\fP
+Number of towers deep.  1 - 20.  Default: 10.
+.TP 8
+.B \-grid-height \fInumber\fP
+Height of the towers.  1 - 20.  Default: 7.
+.TP 8
+.B \-grid-spacing \fInumber\fP
+Space between towers.	1 - 5.	Default: 2.0.
+.TP 8
+.B \-columns \fInumber\fP
+Columns of text on the towers.  1 - 20.	Default: 6.
+.TP 8
+.B \-texture | \-no-texture
+Whether to draw text.  Default true.
+.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 2020 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.