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RedHat 9 (Linux i386) - man page for zoom (redhat section 1)

XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME
zoom - wander around magified desktop
SYNOPSIS
zoom [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-delay usecs] [-lenses] [-pixwidth pixels] [-pixheight pixels] [-pixspacex pixels] [-pixspacey pixels] [-lensoffsetx pixels] [-lensoffsety pixels]
DESCRIPTION
The zoom 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 grabDesktopImages, grabVideoFrames, and chooseRandomImages options in the ~/.xscreensaver file; see xscreensaver-demo(1) for more details.
OPTIONS
zoom accepts the following options: -window Draw on a newly-created window. This is the default. -root Draw on the root window. -mono If on a color display, pretend we're on a monochrome display. -install Install a private colormap for the window. -visual visual 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. -delay microseconds Slow it down. -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. -pixwidth pixels Width of the magnified pixels. -pixheight pixels Height of the magnified pixels. -pixspacex pixels Amount of black space between magnified pixels (X direction). -pixspacey pixels Amount of black space between magnified pixels (Y direction). -lensoffsetx pixels Distance in X direction between consective copied regions (only effective when -lenses used). -lensoffsety pixels Distance in Y direction between consective copied regions (only effective when -lenses used). ENVIRONMENT DISPLAY to get the default host and display number. XENVIRONMENT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
SEE ALSO
X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)
COPYRIGHT
Copyright (C) 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.
AUTHOR
James Macnicol <james.macnicol@mailexcite.com>, 20-Nov-2000. Much code was shamelessly stolen from the spotlight hack and a few others. X Version 11 20-Nov-2000 XScreenSaver(1)