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213 lines
10 KiB
Plaintext
213 lines
10 KiB
Plaintext
__________________________________________________________________________
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This is the Info-ZIP file COPYING (for UnZip), last updated 17 Jul 2000.
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__________________________________________________________________________
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FIRST NOTE:
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This file contains some details about the copyright history of
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contributions to the UnZip project.
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Additionally, it summarises some exceptions to the general BSD-like
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copyright found in LICENSE that covers our generic code and most of
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the system specific ports.
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Please read LICENSE first to find out what is allowed to do with
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Info-ZIP's UnZip code.
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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There are currently two explicit copyrights on portions of UnZip
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code (at least, of which Info-ZIP is aware):
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Jim Luther's Mac OS File Manager interface code; and Christopher Evans'
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MacBinaryIII coding code (for the MacOS port).. These copyrights
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are discussed in more detail below.
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All remaining code is now (starting with UnZip version 5.41) covered
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by the new Info-ZIP license. For details, please read the acompaning
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file LICENSE. The terms and conditions in this license supersede the
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copyright conditions of the contributions by Igor Mandrichenko
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(vms/vms.c), Greg Roelofs (zipinfo.c, new version of unshrink.c),
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Mike White (Windows DLL code in "windll/*"), Steve P. Miller (Pocket
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UnZip GUI "wince/*"), and Mark Adler (inflate/explode decompresseion
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core routines, previously put into the public domain). All these
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Info-ZIP contributors (or "primary" authors) have permitted us to
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replace their copyright notes by the Info-ZIP License.
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Frequently Asked Questions regarding (re)distribution of Zip and UnZip
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are near the end of this file.
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There are no known patents on any of the code in UnZip. Unisys
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claims a patent on LZW encoding and on LZW decoding _in an apparatus
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that performs LZW encoding_, but the patent appears to exempt a stand-
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alone decoder (as in UnZip's unshrink.c). Unisys has publicly claimed
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otherwise, but the issue has never been tested in court. Since this
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point is unclear, unshrinking is not enabled by default. It is the
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responsibility of the user to make his or her peace with Unisys and
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its licensing requirements. (unshrink.c may be removed from future
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releases altogether.)
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__________________________________________________________________________
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The original unzip source code has been extensively modified and
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almost entirely rewritten (changes include random zipfile access
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rather than sequential; replacement of unimplode() with explode();
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replacement of old unshrink() with new (unrelated) unshrink(); re-
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placement of output routines; addition of inflate(), wildcards,
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filename-mapping, text translation, ...; etc.). As far as we can
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tell, only the core code of the unreduce method remained substantially
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similar to Mr. Smith's original source. As of UnZip 5.42, the complete
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core code is now covered by the Info-ZIP Licence. Therefore, support
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for the reduce method has been removed.
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The drop of the reduce method should only affect some test archives,
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reducing was never used in any publically distributed Zip program.
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For pathologic cases where support for reduced archive entries is
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needed, the unreduce code copyrighted by Samuel H. Smith is available
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as a separate distribution (the restricted copyright of this code is
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cited below in the "historical" section).
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The following copyright applies to the Mac OS File Manager interface code
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(macos/source/macstuff.[ch]), distributed with UnZip 5.4 and later:
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* MoreFiles
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*
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* A collection of File Manager and related routines
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*
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* by Jim Luther (Apple Macintosh Developer Technical Support Emeritus)
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* with significant code contributions by Nitin Ganatra
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* (Apple Macintosh Developer Technical Support Emeritus)
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* Copyright 1992-1998 Apple Computer, Inc.
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* Portions copyright 1995 Jim Luther
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* All rights reserved.
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* The Package "More Files" is distributed under the following
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* license terms:
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*
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* "You may incorporate this sample code into your
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* applications without restriction, though the
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* sample code has been provided "AS IS" and the
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* responsibility for its operation is 100% yours.
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* However, what you are not permitted to do is to
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* redistribute the source as "DSC Sample Code" after
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* having made changes. If you're going to
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* redistribute the source, we require that you make
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* it clear in the source that the code was descended
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* from Apple Sample Code, but that you've made
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* changes."
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The usage terms of this copyright note are compatible with the
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Info-ZIP license, they do not add further restrictions.
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The following copyright applies to the Mac OS "macbin3" decoding code
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(extra field compatibility with ZipIt):
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* MacBinaryIII.h
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*
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* Copyright 1997 Christopher Evans (cevans@poppybank.com)
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*
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* Basic encoding and decoding of Macintosh files to the
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* MacBinary III spec.
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* ----------------------------------------------------------------------
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* This source is copyrighted by Christopher Evans (cevans@poppybank.com)
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* (available at ftp://ftp.lazerware.com/MacBinaryIII_src_C.sit
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* homepage of Leonard Rosenthol leonardr@netcom.com)
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This copyright note does not contain any usage terms. So, we assume
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that this code is freely reusable until we are proved wrong...
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--------------------------------------------------------------------------
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The remaining copyright notes have been superseeded by the new
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Info-ZIP license, with explicit permission from the respective
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original authors. They are cited here for historical reasons,
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only:
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The following copyright applies to the full-featured unreduce.c
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(now distributed separately):
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* Copyright 1989 Samuel H. Smith; All rights reserved
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*
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* Do not distribute modified versions without my permission.
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* Do not remove or alter this notice or any other copyright notice.
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* If you use this in your own program you must distribute source code.
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* Do not use any of this in a commercial product.
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Regarding the first stipulation, Mr. Smith was tracked down in southern
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California some years back [Samuel H. Smith, The Tool Shop; as of mid-
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May 1994, (213) 851-9969 (voice), (213) 887-2127(?) (subscription BBS),
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71150.2731@compuserve.com]:
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"He says that he thought that whoever contacted him understood that
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he has no objection to the Info-ZIP group's inclusion of his code.
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His primary concern is that it remain freely distributable, he said."
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Despite the fact that our "normal" code has been entirely rewritten
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and by default no longer contains any of Mr. Smith's code, Info-ZIP
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remains indebted and grateful to him. We hope he finds our contribu-
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tions as useful as we have his.
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Note that the third and fourth stipulations still apply to any com-
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pany that wishes to incorporate the unreduce code into its products;
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if you wish to do so, you must contact Mr. Smith directly regarding
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licensing.
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-----
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The following copyright applied to most of the VMS code in vms.c,
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distributed with UnZip version 4.2 and later:
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* Copyright (c) 1992-93 Igor Mandrichenko.
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* Permission is granted to any individual or institution to use, copy,
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* or redistribute this software so long as all of the original files
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* are included unmodified and that this copyright notice is retained.
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-----
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The following copyright applied to the new version of unshrink.c,
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distributed with UnZip version 5.2 and later:
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* Copyright (c) 1994 Greg Roelofs.
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* Permission is granted to any individual/institution/corporate
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* entity to use, copy, redistribute or modify this software for
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* any purpose whatsoever, subject to the conditions noted in the
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* Frequently Asked Questions section below, plus one additional
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* condition: namely, that my name not be removed from the source
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* code. (Other names may, of course, be added as modifications
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* are made.) Corporate legal staff (like at IBM :-) ) who have
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* problems understanding this can contact me through Zip-Bugs...
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-----
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The following copyright applied to the Windows DLL code (windll/*),
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distributed with UnZip version 5.2 and later:
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* Copyright (c) 1996 Mike White.
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* Permission is granted to any individual or institution to use,
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* copy, or redistribute this software so long as all of the original
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* files are included, that it is not sold for profit, and that this
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* copyright notice is retained.
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-----
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The following copyright applied to the Windows CE GUI port, ``Pocket
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UnZip,'' distributed with UnZip version 5.3 and later:
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* All the source files for Pocket UnZip, except for components
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* written by the Info-ZIP group, are copyrighted 1997 by Steve P.
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* Miller. The product "Pocket UnZip" itself is property of the
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* author and cannot be altered in any way without written consent
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* from Steve P. Miller.
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-----
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The remaining code was written by many people associated with the
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Info-ZIP group, with large contributions from (but not limited to):
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Greg Roelofs (overall program logic, ZipInfo, unshrink, filename
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mapping/portability, etc.), Mark Adler (inflate, explode, funzip),
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Kai Uwe Rommel (OS/2), John Bush and Paul Kienitz (Amiga), Antoine
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Verheijen (Macintosh), Hunter Goatley (more VMS), Mike White (Windows
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DLLs), Christian Spieler (overall logic, optimization, VMS, etc.) and
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others. See the file CONTRIBS in the source distribution for a much
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more complete list of contributors.
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The decompression core code for the deflate method (inflate.[ch],
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explode.c) was originally written by Mark Adler who submitted it
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as public domain code.
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--------------------------------------------------------------------------
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