IMAGE TO POSTSCRIPT MODULE
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	Author: Lars M Bishop, National Center 
                for Computational  Electronics
		University of Illinois at Urbana-Champaign
	Date: 19 January 1993

	bishop@viz1.ceg.uiuc.edu
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Image to Postscript:
-------------
	The Image to Postrscript module is a module that prints an
Adobe Postscript file containing the image that is connected to the
input port.  It is designed to give the user a wide variety of image
sizes, orientations, postitions, and qualities.  Note that the Dump
to File button must be pressed to dump the image to the file, as the
dump may take several seconds (see under parameters).

The Inputs:
----------

Input Field: Field 2D Uniform 4-Vector Byte - The image to be
	printed

The Outputs:
-----------

None (File output)

The Parameters:
--------------

Filename : The file to which the postscript output is sent - .ps is
	NOT added
Bit Per Component : This is the number of bits per component per pixel.
	Note that if, for example, 4 Bits is selected, then the total
	number of bits per pixel will be  4, 12, or 16, depending on
	the setting of Color/Grayscale.  The more bits per component
	per pixel, the higher the image quality, and the larger the
	image file.
Color/Grayscale : This selects the type of image to be drawn to the
	PS file.  Grayscale is graylevels, 3 color is Red-Green-Blue,
	and 4 color is Cyan-Magenta-Yellow-Black.  4 color images
	will often look better than 3 color images, if printed to
	a 4 color printer.  They will look no different if sent to
	a 3 color printer.
Orientation : The orientation of the image
Left Position : The horizontal distance from the left edge of the
	page, when viewed with the image correct-side up.
Bottom Position : The vertical distance from the bottom edge of the
	page, when viewed with the image correct-side up.
Width : The horizontal width of the image, when viewed with the image
	correct-side up.
Dump to File : Actually dumps the current image to the desired file

Example Network:
---------------

        Read Image
            |
            |
     Image to Postscript
 

Known Problems/Bugs/Limitations:
-------------------------------

A version that tiles 4 images automatically has been written, but
	is not yet stable enough for release.
No Autosizing of the image yet.
The module is unable to store actual printer page sizes
Rather Slow.