Copyright 1995-1996 by Fred L. Drake, Jr., Reston, Virginia, USA, and

Virginia Polytechnic Institute and State University, Blacksburg,

Virginia, USA.  Portions of the software copyright 1991-1995 by

Stichting Mathematisch Centrum, Amsterdam, The Netherlands.  Copying is

permitted under the terms associated with the main Python distribution,

with the additional restriction that this additional notice be included

and maintained on all distributed copies.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its

documentation for any purpose and without fee is hereby granted,

provided that the above copyright notice appear in all copies and that

both that copyright notice and this permission notice appear in

supporting documentation, and that the names of Fred L. Drake, Jr. and

Virginia Polytechnic Institute and State University not be used in

advertising or publicity pertaining to distribution of the software

without specific, written prior permission.

FRED L. DRAKE, JR. AND VIRGINIA POLYTECHNIC INSTITUTE AND STATE

UNIVERSITY DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

EVENT SHALL FRED L. DRAKE, JR. OR VIRGINIA POLYTECHNIC INSTITUTE AND

STATE UNIVERSITY BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL

DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR

PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

PERFORMANCE OF THIS SOFTWARE.

--

Copyright notice

================

The Python source is copyrighted, but you can freely use and copy it

as long as you don't change or remove the copyright notice:

----------------------------------------------------------------------

Copyright (c) 2000-2007 Python Software Foundation.

All rights reserved.

Copyright (c) 2000 BeOpen.com.

All rights reserved.

Copyright (c) 1995-2000 Corporation for National Research Initiatives.

All rights reserved.

Copyright (c) 1991-1995 Stichting Mathematisch Centrum.

All rights reserved.

See the file "commontex/license.tex" for information on usage and

redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.

----------------------------------------------------------------------

--

\section{History of the software}

Python was created in the early 1990s by Guido van Rossum at Stichting

Mathematisch Centrum (CWI, see \url{http://www.cwi.nl/}) in the Netherlands

as a successor of a language called ABC.  Guido remains Python's

principal author, although it includes many contributions from others.

In 1995, Guido continued his work on Python at the Corporation for

National Research Initiatives (CNRI, see \url{http://www.cnri.reston.va.us/})

in Reston, Virginia where he released several versions of the

software.

In May 2000, Guido and the Python core development team moved to

BeOpen.com to form the BeOpen PythonLabs team.  In October of the same

year, the PythonLabs team moved to Digital Creations (now Zope

Corporation; see \url{http://www.zope.com/}).  In 2001, the Python

Software Foundation (PSF, see \url{http://www.python.org/psf/}) was

formed, a non-profit organization created specifically to own

Python-related Intellectual Property.  Zope Corporation is a

sponsoring member of the PSF.

All Python releases are Open Source (see

\url{http://www.opensource.org/} for the Open Source Definition).

Historically, most, but not all, Python releases have also been

GPL-compatible; the table below summarizes the various releases.

\begin{tablev}{c|c|c|c|c}{textrm}%

  {Release}{Derived from}{Year}{Owner}{GPL compatible?}

  \linev{0.9.0 thru 1.2}{n/a}{1991-1995}{CWI}{yes}

  \linev{1.3 thru 1.5.2}{1.2}{1995-1999}{CNRI}{yes}

  \linev{1.6}{1.5.2}{2000}{CNRI}{no}

  \linev{2.0}{1.6}{2000}{BeOpen.com}{no}

  \linev{1.6.1}{1.6}{2001}{CNRI}{no}

  \linev{2.1}{2.0+1.6.1}{2001}{PSF}{no}

  \linev{2.0.1}{2.0+1.6.1}{2001}{PSF}{yes}

  \linev{2.1.1}{2.1+2.0.1}{2001}{PSF}{yes}

  \linev{2.2}{2.1.1}{2001}{PSF}{yes}

  \linev{2.1.2}{2.1.1}{2002}{PSF}{yes}

  \linev{2.1.3}{2.1.2}{2002}{PSF}{yes}

  \linev{2.2.1}{2.2}{2002}{PSF}{yes}

  \linev{2.2.2}{2.2.1}{2002}{PSF}{yes}

  \linev{2.2.3}{2.2.2}{2002-2003}{PSF}{yes}

  \linev{2.3}{2.2.2}{2002-2003}{PSF}{yes}

  \linev{2.3.1}{2.3}{2002-2003}{PSF}{yes}

  \linev{2.3.2}{2.3.1}{2003}{PSF}{yes}

  \linev{2.3.3}{2.3.2}{2003}{PSF}{yes}

  \linev{2.3.4}{2.3.3}{2004}{PSF}{yes}

  \linev{2.3.5}{2.3.4}{2005}{PSF}{yes}

  \linev{2.4}{2.3}{2004}{PSF}{yes}

  \linev{2.4.1}{2.4}{2005}{PSF}{yes}

  \linev{2.4.2}{2.4.1}{2005}{PSF}{yes}

  \linev{2.4.3}{2.4.2}{2006}{PSF}{yes}

  \linev{2.5}{2.4}{2006}{PSF}{yes}

  \linev{2.5.1}{2.5}{2007}{PSF}{yes}

\end{tablev}

\note{GPL-compatible doesn't mean that we're distributing

Python under the GPL.  All Python licenses, unlike the GPL, let you

distribute a modified version without making your changes open source.

The GPL-compatible licenses make it possible to combine Python with

other software that is released under the GPL; the others don't.}

Thanks to the many outside volunteers who have worked under Guido's

direction to make these releases possible.

\section{Terms and conditions for accessing or otherwise using Python}

\centerline{\strong{PSF LICENSE AGREEMENT FOR PYTHON \version}}

\begin{enumerate}

\item

This LICENSE AGREEMENT is between the Python Software Foundation

(``PSF''), and the Individual or Organization (``Licensee'') accessing

and otherwise using Python \version{} software in source or binary

form and its associated documentation.

\item

Subject to the terms and conditions of this License Agreement, PSF

hereby grants Licensee a nonexclusive, royalty-free, world-wide

license to reproduce, analyze, test, perform and/or display publicly,

prepare derivative works, distribute, and otherwise use Python

\version{} alone or in any derivative version, provided, however, that

PSF's License Agreement and PSF's notice of copyright, i.e.,

``Copyright \copyright{} 2001-2006 Python Software Foundation; All

Rights Reserved'' are retained in Python \version{} alone or in any

derivative version prepared by Licensee.

\item

In the event Licensee prepares a derivative work that is based on

or incorporates Python \version{} or any part thereof, and wants to

make the derivative work available to others as provided herein, then

Licensee hereby agrees to include in any such work a brief summary of

the changes made to Python \version.

\item

PSF is making Python \version{} available to Licensee on an ``AS IS''

basis.  PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR

IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND

DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON \version{} WILL

NOT INFRINGE ANY THIRD PARTY RIGHTS.

\item

PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON

\version{} FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR

LOSS AS A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON

\version, OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE

POSSIBILITY THEREOF.

\item

This License Agreement will automatically terminate upon a material

breach of its terms and conditions.

\item

Nothing in this License Agreement shall be deemed to create any

relationship of agency, partnership, or joint venture between PSF and

Licensee.  This License Agreement does not grant permission to use PSF

trademarks or trade name in a trademark sense to endorse or promote

products or services of Licensee, or any third party.

\item

By copying, installing or otherwise using Python \version, Licensee

agrees to be bound by the terms and conditions of this License

Agreement.

\end{enumerate}

\centerline{\strong{BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0}}

\centerline{\strong{BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1}}

\begin{enumerate}

\item

This LICENSE AGREEMENT is between BeOpen.com (``BeOpen''), having an

office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the

Individual or Organization (``Licensee'') accessing and otherwise

using this software in source or binary form and its associated

documentation (``the Software'').

\item

Subject to the terms and conditions of this BeOpen Python License

Agreement, BeOpen hereby grants Licensee a non-exclusive,

royalty-free, world-wide license to reproduce, analyze, test, perform

and/or display publicly, prepare derivative works, distribute, and

otherwise use the Software alone or in any derivative version,

provided, however, that the BeOpen Python License is retained in the

Software, alone or in any derivative version prepared by Licensee.

\item

BeOpen is making the Software available to Licensee on an ``AS IS''

basis.  BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR

IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND

DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT

INFRINGE ANY THIRD PARTY RIGHTS.

\item

BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE

SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS

AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY

DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

\item

This License Agreement will automatically terminate upon a material

breach of its terms and conditions.

\item

This License Agreement shall be governed by and interpreted in all

respects by the law of the State of California, excluding conflict of

law provisions.  Nothing in this License Agreement shall be deemed to

create any relationship of agency, partnership, or joint venture

between BeOpen and Licensee.  This License Agreement does not grant

permission to use BeOpen trademarks or trade names in a trademark

sense to endorse or promote products or services of Licensee, or any

third party.  As an exception, the ``BeOpen Python'' logos available

at http://www.pythonlabs.com/logos.html may be used according to the

permissions granted on that web page.

\item

By copying, installing or otherwise using the software, Licensee

agrees to be bound by the terms and conditions of this License

Agreement.

\end{enumerate}

\centerline{\strong{CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1}}

\begin{enumerate}

\item

This LICENSE AGREEMENT is between the Corporation for National

Research Initiatives, having an office at 1895 Preston White Drive,

Reston, VA 20191 (``CNRI''), and the Individual or Organization

(``Licensee'') accessing and otherwise using Python 1.6.1 software in

source or binary form and its associated documentation.

\item

Subject to the terms and conditions of this License Agreement, CNRI

hereby grants Licensee a nonexclusive, royalty-free, world-wide

license to reproduce, analyze, test, perform and/or display publicly,

prepare derivative works, distribute, and otherwise use Python 1.6.1

alone or in any derivative version, provided, however, that CNRI's

License Agreement and CNRI's notice of copyright, i.e., ``Copyright

\copyright{} 1995-2001 Corporation for National Research Initiatives;

All Rights Reserved'' are retained in Python 1.6.1 alone or in any

derivative version prepared by Licensee.  Alternately, in lieu of

CNRI's License Agreement, Licensee may substitute the following text

(omitting the quotes): ``Python 1.6.1 is made available subject to the

terms and conditions in CNRI's License Agreement.  This Agreement

together with Python 1.6.1 may be located on the Internet using the

following unique, persistent identifier (known as a handle):

1895.22/1013.  This Agreement may also be obtained from a proxy server

on the Internet using the following URL:

\url{http://hdl.handle.net/1895.22/1013}.''

\item

In the event Licensee prepares a derivative work that is based on

or incorporates Python 1.6.1 or any part thereof, and wants to make

the derivative work available to others as provided herein, then

Licensee hereby agrees to include in any such work a brief summary of

the changes made to Python 1.6.1.

\item

CNRI is making Python 1.6.1 available to Licensee on an ``AS IS''

basis.  CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR

IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND

DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT

INFRINGE ANY THIRD PARTY RIGHTS.

\item

CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON

1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS

A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,

OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

\item

This License Agreement will automatically terminate upon a material

breach of its terms and conditions.

\item

This License Agreement shall be governed by the federal

intellectual property law of the United States, including without

limitation the federal copyright law, and, to the extent such

U.S. federal law does not apply, by the law of the Commonwealth of

Virginia, excluding Virginia's conflict of law provisions.

Notwithstanding the foregoing, with regard to derivative works based

on Python 1.6.1 that incorporate non-separable material that was

previously distributed under the GNU General Public License (GPL), the

law of the Commonwealth of Virginia shall govern this License

Agreement only as to issues arising under or with respect to

Paragraphs 4, 5, and 7 of this License Agreement.  Nothing in this

License Agreement shall be deemed to create any relationship of

agency, partnership, or joint venture between CNRI and Licensee.  This

License Agreement does not grant permission to use CNRI trademarks or

trade name in a trademark sense to endorse or promote products or

services of Licensee, or any third party.

\item

By clicking on the ``ACCEPT'' button where indicated, or by copying,

installing or otherwise using Python 1.6.1, Licensee agrees to be

bound by the terms and conditions of this License Agreement.

\end{enumerate}

\centerline{ACCEPT}

\centerline{\strong{CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2}}

Copyright \copyright{} 1991 - 1995, Stichting Mathematisch Centrum

Amsterdam, The Netherlands.  All rights reserved.

Permission to use, copy, modify, and distribute this software and its

documentation for any purpose and without fee is hereby granted,

provided that the above copyright notice appear in all copies and that

both that copyright notice and this permission notice appear in

supporting documentation, and that the name of Stichting Mathematisch

Centrum or CWI not be used in advertising or publicity pertaining to

distribution of the software without specific, written prior

permission.

STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO

THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE

FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT

OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

\section{Licenses and Acknowledgements for Incorporated Software}

This section is an incomplete, but growing list of licenses and

acknowledgements for third-party software incorporated in the

Python distribution.

\subsection{Mersenne Twister}

The \module{_random} module includes code based on a download from

\url{http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html}.

The following are the verbatim comments from the original code:

\begin{verbatim}

A C-program for MT19937, with initialization improved 2002/1/26.

Coded by Takuji Nishimura and Makoto Matsumoto.

Before using, initialize the state by using init_genrand(seed)

or init_by_array(init_key, key_length).

Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,

All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions

are met:

 1. Redistributions of source code must retain the above copyright

    notice, this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright

    notice, this list of conditions and the following disclaimer in the

    documentation and/or other materials provided with the distribution.

 3. The names of its contributors may not be used to endorse or promote

    products derived from this software without specific prior written

    permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Any feedback is very welcome.

http://www.math.keio.ac.jp/matumoto/emt.html

email: matumoto@math.keio.ac.jp

\end{verbatim}

\subsection{Sockets}

The \module{socket} module uses the functions, \function{getaddrinfo},

and \function{getnameinfo}, which are coded in separate source files

from the WIDE Project, \url{http://www.wide.ad.jp/about/index.html}.

\begin{verbatim}      

Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.

All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions

are met:

1. Redistributions of source code must retain the above copyright

   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright

   notice, this list of conditions and the following disclaimer in the

   documentation and/or other materials provided with the distribution.

3. Neither the name of the project nor the names of its contributors

   may be used to endorse or promote products derived from this software

   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND

GAI_ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE

FOR GAI_ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

HOWEVER CAUSED AND ON GAI_ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN GAI_ANY WAY

OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

SUCH DAMAGE.

\end{verbatim}

\subsection{Floating point exception control}

The source for the \module{fpectl} module includes the following notice:

\begin{verbatim}

     ---------------------------------------------------------------------  

    /                       Copyright (c) 1996.                           \ 

   |          The Regents of the University of California.                 |

   |                        All rights reserved.                           |

   |                                                                       |

   |   Permission to use, copy, modify, and distribute this software for   |

   |   any purpose without fee is hereby granted, provided that this en-   |

   |   tire notice is included in all copies of any software which is or   |

   |   includes  a  copy  or  modification  of  this software and in all   |

   |   copies of the supporting documentation for such software.           |

   |                                                                       |

   |   This  work was produced at the University of California, Lawrence   |

   |   Livermore National Laboratory under  contract  no.  W-7405-ENG-48   |

   |   between  the  U.S.  Department  of  Energy and The Regents of the   |

   |   University of California for the operation of UC LLNL.              |

   |                                                                       |

   |                              DISCLAIMER                               |

   |                                                                       |

   |   This  software was prepared as an account of work sponsored by an   |

   |   agency of the United States Government. Neither the United States   |

   |   Government  nor the University of California nor any of their em-   |

   |   ployees, makes any warranty, express or implied, or  assumes  any   |

   |   liability  or  responsibility  for the accuracy, completeness, or   |

   |   usefulness of any information,  apparatus,  product,  or  process   |

   |   disclosed,   or  represents  that  its  use  would  not  infringe   |

   |   privately-owned rights. Reference herein to any specific  commer-   |

   |   cial  products,  process,  or  service  by trade name, trademark,   |

   |   manufacturer, or otherwise, does not  necessarily  constitute  or   |

   |   imply  its endorsement, recommendation, or favoring by the United   |

   |   States Government or the University of California. The views  and   |

   |   opinions  of authors expressed herein do not necessarily state or   |

   |   reflect those of the United States Government or  the  University   |

   |   of  California,  and shall not be used for advertising or product   |

    \  endorsement purposes.                                              / 

     ---------------------------------------------------------------------

\end{verbatim}

\subsection{MD5 message digest algorithm}

The source code for the \module{md5} module contains the following notice:

\begin{verbatim}

  Copyright (C) 1999, 2002 Aladdin Enterprises.  All rights reserved.

  This software is provided 'as-is', without any express or implied

  warranty.  In no event will the authors be held liable for any damages

  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,

  including commercial applications, and to alter it and redistribute it

  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not

     claim that you wrote the original software. If you use this software

     in a product, an acknowledgment in the product documentation would be

     appreciated but is not required.

  2. Altered source versions must be plainly marked as such, and must not be

     misrepresented as being the original software.

  3. This notice may not be removed or altered from any source distribution.

  L. Peter Deutsch

  ghost@aladdin.com

  Independent implementation of MD5 (RFC 1321).

  This code implements the MD5 Algorithm defined in RFC 1321, whose

  text is available at

http://www.ietf.org/rfc/rfc1321.txt

  The code is derived from the text of the RFC, including the test suite

  (section A.5) but excluding the rest of Appendix A.  It does not include

  any code or documentation that is identified in the RFC as being

  copyrighted.

  The original and principal author of md5.h is L. Peter Deutsch

  <ghost@aladdin.com>.  Other authors are noted in the change history

  that follows (in reverse chronological order):

  2002-04-13 lpd Removed support for non-ANSI compilers; removed

references to Ghostscript; clarified derivation from RFC 1321;

now handles byte order either statically or dynamically.

  1999-11-04 lpd Edited comments slightly for automatic TOC extraction.