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

XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME
bumps - move distorting spotlight around desktop
SYNOPSIS
bumps [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-delay usecs] [-radius pixels]
DESCRIPTION
The bumps program takes an image and exposes small, distorted sections of it as if through an odd wandering spotlight beam. 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
bumps 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. -radius pixels Radius of the spotlight in pixels.
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) 1999 by Shane Smit. Permission to use, copy, modify, distribute, and sell this software and its documentation for any pur- pose 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 pur- pose. It is provided "as is" without express or implied warranty.
CREDITS
Shane Smit <blackend@inconnect.com>, 8-Oct-1999. X Version 11 05-Apr-1999 XScreenSaver(1)