ToyViewer  Ver.2.5 (Dec. 1996)
		Copyright (C) 1995,1996  Takeshi Ogihara

Abstract
1. ToyViewer can read and display image files in following formats:
	tiff, eps, gif, bmp, png, jpg, bie(jbig), pcx, pcd,
	pnm (ppm, pbm, or pgm), xbm, and mag.
2. Displayed images can be saved in following formats:
	tiff, eps, gif, bmp, png, jpg, bie(jbig), pnm, or xbm.
3. ToyViewer can read and write gif or png files with transparent color, and also can read and write interlaced(progressive) gif, png, or jpg files.
4. ToyViewer can scan (auto-display) image files in a folder.
5. Displayed images can be scaled (enlarge/shrink).
6. You can rotate, flip, or clip images.
7. ToyViewer has ability to adjust brightness/contrast of the image, to enhance edges, and to make embossing effects.
8. You can replace specified color with other color or transparent color.
9. Full color images can be reduced into 256, 64, or 8 colors.
10. You can make images monochrome (8bit gray, 2bit gray, or bilevel).
11. Images can be displayed on background of the Workspace as "wallpaper".  You can specify files to be displayed automatically as wallpaper when ToyViewer is launched.
12. Images can be printed.
13. You can set ToyViewer to display any image format if there is a filter program to ppm.
14. ToyViewer provides image conversion filter services.  Any image format can take advantage of filter service if there is a filter program to ppm format.
15. You can add comments to images (comments are written into only gif, png, jpg, or pnm formats).

--- Copyright ----------------
Copyright of this software (including source programs, documents, and images) belongs to the author, Takeshi Ogihara.
This software includes some fragments from other free software; Copyright of these parts belongs to the original authors.

This software is freeware. You may freely copy and redistribute it. Permission is granted to modify the source for your own purposes. But DON'T redistribute modifications without this copyright notice and a declaration of  modification.

There is absolutely no warrantee on this software. The author takes no responsibility for any damage caused by this software.
Caution: Some companies may claim copyright of image formats.  For commercial purposes, use this software at your own risk.

Send suggestions and bug reports to:  ogihara@seg.kobe-u.ac.jp

						(1996-12-24)


"In the case of software, patents can stifle innovation and economic growth that benefits us all."(M.Nelson & J.L.Gailly)
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-------ToyViewer uses following programs-------
Background.m
	based on "Background"
	by Scott Hess and Andreas Windemut (1991) [PDS]
BMP reading routines
	partially based on
	"bmptoppm" by DaviD W. Sanderson (1992) and
	"CzView 2.20" by Y.Sasaki (1994).
GIF reading routines
	use "giftoppm" of David Koblas (1990).
GIF saving routines
	use "ppmtogif" of Jef Poskanzer (1989).
djpeg & cjpeg (v6a)
	Copyright (C) 1991-1996, Thomas G. Lane.
	Part of the Independent JPEG Group's software.
	They are modified to use with ToyViewer.
jbigtopbm & pbmtojbig
	JBIG-KIT (Version 0.9)
	Markus Kuhn (1996).
hpcdtoppm Ver.0.6
	Copyright (c) 1992-1994, Hadmut Danisch
MAG reading routines
	partially based on
	"CzView 2.20" by Y.Sasaki (1994) and
	"MAGLV 1.20" by H.Takada (1993).
PCX reading routines
	partially based on "pcxtoppm.c" by Michael Davidson (1990).
PNG reading routines (png2pao)
	based on "pngtopnm" (2.31) by A. Lehmann & W. van Schaik.
PNG writing routines (pao2png)
	partially based on
	"tiff2png" by Willem van Schaik, Singapore (1996).
PNG routines use:
	libpng 1.0 beta 3 - version 0.89 (1996)
		by Guy Eric Schalnat, Group 42, Inc.
	'zlib' general purpose compression library version 1.0.4 (1996).
		by Jean-loup Gailly and Mark Adler.
Filterservice routines
	partially based on
	McFilter (GIFFilter.m) v2.0 by Michael McCulloch (1993).

Thank you.