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mawk is a very fast AWK implementation by Mike Brennan based on a Python interpreter.
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goop(1) [redhat man page]

XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

goop - squishy transparent oil and bubble screenhack SYNOPSIS
goop [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-trans- parent] [-non-transparent] [-additive] [-subtractive] [-xor] [-no-xor] DESCRIPTION
The goop program draws a simulation of bubbles in layers of overlapping multicolored translucent fluid. OPTIONS
goop 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. -count integer How many bubbles to draw per layer. Default: random. -layers integer How many layers to draw. Default: random, based on screen depth. -delay microseconds How much of a delay should be introduced between steps of the animation. Default 100000, or about 1/10th second. -transparent If -layers is greater than 1, then each layer will be drawn in one color, and when they overlap, the colors will be mixed. This is the default. -non-transparent Turns off -transparent. -additive If -transparent is specified, then this option means that the colors will be mixed using an additive color model, as if the blobs were projected light. This is the default. -subtractive If -transparent is specified, then this option means that the colors will be mixed using a subtractive color model, as if the blobs were translucent filters. -xor Draw with xor instead of the other color tricks. 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) COPYRIGHT
Copyright (C) 1997 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. AUTHOR
Jamie Zawinski <>, 11-Jun-97. X Version 11 11-Jun-97 XScreenSaver(1)

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