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+.TH XScreenSaver 1 "30-Aug-05" "X Version 11"
+.SH NAME
+cube21 - animates the Cube 21 puzzle
+.SH SYNOPSIS
+.B cube21
+[\-display \fIhost:display.screen\fP]
+[\-visual \fIvisual\fP]
+[\-window]
+[\-root]
+[\-install]
+[\-delay \fImicroseconds\fP]
+[\-texture] [\-no\-texture]
+[\-mono]
+[\-wireframe]
+[\-spin] [\-no\-spin]
+[\-wander] [\-no\-wander]
+[\-randomize] [\-no\-randomize]
+[\-spinspeed \fInumber\fP]
+[\-rotspeed \fInumber\fP]
+[\-wanderspeed \fInumber\fP]
+[\-wait \fInumber\fP]
+[\-cubesize \fInumber\fP]
+[\-colormode \fIarg\fP]
+[\-fps]
+.SH DESCRIPTION
+This program animates a puzzle known as Cube 21 or Square-1.
+Its moves are chosen randomly.
+.P
+Cube 21 is a Rubik-like puzzle invented in 1992.  Its specialities are that
+it can change its shape and even the number of possible moves.  It can have
+more than 200 different shapes and the total number of configurations
+(assuming colors) is several tens of billions.
+.SH OPTIONS
+.I cube21
+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\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 \-delay \fImicroseconds\fP
+How long to pause between frames.  Default is 20000, or 0.02 second.
+.TP 8
+.B \-texture
+Use texture maps.  This is the default.
+.TP 8
+.B \-no\-texture
+Use solid colors.
+.TP 8
+.B \-mono
+Disable both texture maps and colors.
+.TP 8
+.B \-wireframe
+Only draw outlines.  Outlines of all pieces, not only the whole object, are drawn.
+.TP 8
+.B \-spin
+Spin the whole object around X, Y and Z axes.  This is the default.
+.TP 8
+.B \-no\-spin
+Do not spin, showing the same three faces all the time.
+.TP 8
+.B \-wander
+Move the object around the screen.  This is the default.
+.TP 8
+.B \-no\-wander
+Keep the object centered on the screen.
+.TP 8
+.B \-randomize
+Shuffle the puzzle randomly at startup.  This is the default.
+.TP 8
+.B \-no\-randomize
+Do not shuffle at startup, begin at the shape of cube.
+.TP 8
+.B \-spinspeed \fInumber\fP
+The relative speed of spinning.  Default is 1.0.
+.TP 8
+.B \-rotspeed \fInumber\fP
+The relative speed of the moves.  Default is 3.0.  Setting to \(<= 0.0
+makes the object stay at one configuration.
+.TP 8
+.B \-wanderspeed \fInumber\fP
+The relative speed of wandering around the screen.  Default is 1.0.
+.TP 8
+.B \-wait \fInumber\fP
+How long to stay at ending position after each move.  The meaning of
+the argument is again relative.  Default is 40.0.
+.TP 8
+.B \-cubesize \fInumber\fP
+Size of the object.  Value of 3.0 fills roughly all the screen (its height).  Default is 0.7.
+.TP 8
+.B \-colormode \fIargument\fP
+How many and which colors should the object have.  The colors are put on the piece
+faces so that the puzzle is solvable.  The inner faces are not influenced.
+.RS
+.TP 8
+.BR se " or " silver
+Simulate the "Silver Edition" \- white and one random color.
+.TP 8
+.BR 2 " or " two
+Two random colors.
+.TP 8
+.BR ce " or " classic
+Simulate the "Classic Edition" \- white, yellow, orange, red, green and blue.
+.TP 8
+.BR 6 " or " six
+Six random colors.
+.TP 8
+.BR 1 " or " random " or " rnd
+One random color.
+.TP 8
+Anything else
+All faces white.
+.RE
+.TP 8
+.B \-fps
+Display the current frame rate, CPU load, and polygon count.
+.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 2005 by Vaclav Potocek.  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
+Vaclav (Vasek) Potocek <vasek.potocek@post.cz>, 30-Aug-05.