-.TH XScreenSaver 1 "05-aug-93" "X Version 11"
+.TH XScreenSaver 1 "05-Apr-1999" "X Version 11"
.SH NAME
decayscreen - make a screen meltdown.
.SH SYNOPSIS
.B decayscreen
-[\-display \fIhost:display.screen\fP] [\-window] [\-root] [\-mono] [\-delay \fIusecs\fP]
+[\-display \fIhost:display.screen\fP] [\-window] [\-root] [\-mono] [\-install] [\-visual \fIvisual\fP] [\-delay \fIusecs\fP] [\-mode \fImode\fP]
.SH DESCRIPTION
The \fIdecayscreen\fP program creates a melting effect by randomly
shifting rectangles around the screen.
.B \-mono
If on a color display, pretend we're on a monochrome display.
.TP 8
-.B \-delay microseconds
+.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 \-delay \fImicroseconds\fP
Slow it down.
+.TP 8
+.B \-mode \fImode\fP
+The direction in which the image should tend to slide. Legal values are
+\fIrandom\fP (meaning pick one), \fIup\fP, \fIleft\fP, \fIright\fP,
+\fIdown\fP, \fIupleft\fP, \fIdownleft\fP, \fIupright\fP, \fIdownright\fP,
+\fIshuffle\fP (meaning perfer no particular direction), \fIin\fP (meaning
+move things toward the center), \fIout\fP (meaning move things away
+from the center), \fImelt\fP (meaning melt straight downward), and \fIstretch\fP
+(meaning stretch the screen downward).
+.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
implied warranty.
.SH AUTHOR
Vivek Khera <khera@cs.duke.edu>, 05-Aug-93; based on code by David Wald, 1988.
+Modified by jwz, 28-Nov-97. Modified by Rick Schultz <rick@skapunx.net> 05-Apr-1999.
+