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+.TH XScreenSaver 1 "20-Nov-2000" "X Version 11"
+.SH NAME
+zoom - wander around magnified desktop
+.SH SYNOPSIS
+.B zoom
+[\-display \fIhost:display.screen\fP] [\-foreground \fIcolor\fP]
+[\-background \fIcolor\fP] [\-window] [\-root] [\-mono] [\-install]
+[\-visual \fIvisual\fP]
+[\-delay \fIusecs\fP]
+[\-duration \fIsecs\fP]
+[\-lenses]
+[\-pixwidth \fIpixels\fP] [\-pixheight \fIpixels\fP]
+[\-pixspacex \fIpixels\fP] [\-pixspacey \fIpixels\fP]
+[\-lensoffsetx \fIpixels\fP] [\-lensoffsety \fIpixels\fP]
+[\-fps]
+.SH DESCRIPTION
+The \fIzoom\fP program takes an image, magnifies it, and scrolls around
+it, fatbits-style.
+
+The image that it manipulates will be grabbed from the portion of
+the screen underlying the window, or from the system's video input,
+or from a random file on disk, as indicated by
+the \fIgrabDesktopImages\fP, \fIgrabVideoFrames\fP,
+and \fIchooseRandomImages\fP options in the \fI~/.xscreensaver\fP
+file; see
+.BR xscreensaver-demo (1)
+for more details.
+.SH OPTIONS
+.I zoom
+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 \-mono 
+If on a color display, pretend we're on a monochrome display.
+.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 \-delay \fImicroseconds\fP
+Slow it down.
+.TP 8
+.B \-duration \fIseconds\fP
+How long to run before loading a new image.  Default 120 seconds.
+.TP 8
+.B \-lenses
+Instead of doing magnification we just copy an offset region from the original
+image.  If lensoffsetx < pixwidth (and similarly for Y) then consecutive
+regions will overlap, giving the effect of looking through an array of
+lenses.
+.TP 8
+.B \-pixwidth \fIpixels\fP
+Width of the magnified pixels.
+.TP 8
+.B \-pixheight \fIpixels\fP
+Height of the magnified pixels.
+.TP 8
+.B \-pixspacex \fIpixels\fP
+Amount of black space between magnified pixels (X direction).
+.TP 8
+.B \-pixspacey \fIpixels\fP
+Amount of black space between magnified pixels (Y direction).
+.TP 8
+.B \-lensoffsetx \fIpixels\fP
+Distance in X direction between consecutive copied regions (only effective
+when 
+.I -lenses
+used).
+.TP 8
+.B \-lensoffsety \fIpixels\fP
+Distance in Y direction between consecutive copied regions (only effective
+when 
+.I -lenses
+used).
+.TP 8
+.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),
+.BR xscreensaver\-demo (1),
+.BR xscreensaver\-getimage (1)
+.SH COPYRIGHT
+Copyright \(co 2000 by James Macnicol.  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
+James Macnicol <james.macnicol@mailexcite.com>, 20-Nov-2000.  Much code was
+shamelessly stolen from the 
+.B spotlight 
+hack and a few others.
+