--- /dev/null
+.TH XScreenSaver 1 "24-Nov-97" "X Version 11"
+.SH NAME
+slidescreen - permute the screen image like an 8-puzzle
+.SH SYNOPSIS
+.B slidescreen
+[\-display \fIhost:display.screen\fP] [\-background \fIcolor\fP] [\-grid-size \fIpixels\fP] [\-ibw \fIpixels\fP] [\-increment \fIpixels\fP] [\-delay \fIusecs\fP] [\-delay2 \fIusecs\fP] [\-window] [\-root] [\-install] [\-visual \fIvisual\fP]
+.SH DESCRIPTION
+The \fIslidescreen\fP program takes an image of the screen, divides it into
+a grid, deletes a random square of that grid, and then randomly slides
+one of the neighbors of this "hole" into the hole (and repeat.)
+.SH OPTIONS
+.I slidescreen
+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 \-grid-size \fIpixels\fP
+The size of the grid cells. Default 70 pixels.
+.TP 8
+.B \-ibw \fIpixels\fP
+The size of the "gutter" between grid cells. Default 1 pixel.
+.TP 8
+.B \-increment \fIpixels\fP
+How many pixels by which a piece should be moved when sliding to a new
+location. Default 10 pixels.
+.TP 8
+.B \-delay \fImicroseconds\fP
+How much of a delay should be introduced between steps of the animation of
+the motion of each segment. Default 50000, which is 0.05 seconds. This
+is closely related to the \fI\-increment\fP parameter.
+.TP 8
+.B \-delay \fImicroseconds\fP
+How much of a delay should be introduced between the end of the motion of
+one segment and the beginning of the motion of another. Default 1000000,
+which is one second.
+.SH RESOURCES
+On some systems (currently, only SGIs), this program can, instead of grabbing
+a desktop image, grab a frame of video from an external camera and manipulate
+that instead. The following resources control that.
+.PP
+.TP 8
+.B grabVideoProbability \fR(Float)\fP
+What portion of the time to grab video rather than a screen image,
+between 0.0 and 1.0. Defaults to 0.5, or half the time.
+.TP 8
+.B videoDevice \fR(Integer)\fP
+The number of the default video input device to check first. If unspecified,
+the default camera (from videopanel(1)) will be checked first. After that, all
+other available video input devices will be checked in order.
+
+The first one which produces a non-black image will be used. If all images
+are black, the others will be re-checked a few times before giving up and
+falling back to simply grabbing a desktop image (but note that this takes a
+few seconds, so if you don't actually have any video sources hooked up, you
+should consider turning off video grabbing by setting
+\fBgrabVideoProbability\fP to 0.0.)
+.TP 8
+.B videoGain \fR(Float)\fP
+The amount by which to brighten the grabbed image. This defaults to 2.2.
+.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 1992 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 <jwz@jwz.org>, 3-dec-92.
projects / xscreensaver / blobdiff