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          GNU GENERAL PUBLIC LICENSE

           Version 1, February 1989

 Copyright (C) 1989 Free Software Foundation, Inc.

              51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 Everyone is permitted to copy and distribute verbatim copies

 of this license document, but changing it is not allowed.

              Preamble

  The license agreements of most software companies try to keep users

at the mercy of those companies.  By contrast, our General Public

License is intended to guarantee your freedom to share and change free

software--to make sure the software is free for all its users.  The

General Public License applies to the Free Software Foundation's

software and to any other program whose authors commit to using it.

You can use it for your programs, too.

  When we speak of free software, we are referring to freedom, not

price.  Specifically, the General Public License is designed to make

sure that you have the freedom to give away or sell copies of free

software, that you receive source code or can get it if you want it,

that you can change the software or use pieces of it in new free

programs; and that you know you can do these things.

  To protect your rights, we need to make restrictions that forbid

anyone to deny you these rights or to ask you to surrender the rights.

These restrictions translate to certain responsibilities for you if you

distribute copies of the software, or if you modify it.

  For example, if you distribute copies of a such a program, whether

gratis or for a fee, you must give the recipients all the rights that

you have.  You must make sure that they, too, receive or can get the

source code.  And you must tell them their rights.

  We protect your rights with two steps: (1) copyright the software, and

(2) offer you this license which gives you legal permission to copy,

distribute and/or modify the software.

  Also, for each author's protection and ours, we want to make certain

that everyone understands that there is no warranty for this free

software.  If the software is modified by someone else and passed on, we

want its recipients to know that what they have is not the original, so

that any problems introduced by others will not reflect on the original

authors' reputations.

  The precise terms and conditions for copying, distribution and

modification follow.

          GNU GENERAL PUBLIC LICENSE

   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License Agreement applies to any program or other work which

contains a notice placed by the copyright holder saying it may be

distributed under the terms of this General Public License.  The

"Program", below, refers to any such program or work, and a "work based

on the Program" means either the Program or any work containing the

Program or a portion of it, either verbatim or with modifications.  Each

licensee is addressed as "you".

  1. You may copy and distribute verbatim copies of the Program's source

code as you receive it, in any medium, provided that you conspicuously and

appropriately publish on each copy an appropriate copyright notice and

disclaimer of warranty; keep intact all the notices that refer to this

General Public License and to the absence of any warranty; and give any

other recipients of the Program a copy of this General Public License

along with the Program.  You may charge a fee for the physical act of

transferring a copy.

  2. You may modify your copy or copies of the Program or any portion of

it, and copy and distribute such modifications under the terms of Paragraph

1 above, provided that you also do the following:

    a) cause the modified files to carry prominent notices stating that

    you changed the files and the date of any change; and

    b) cause the whole of any work that you distribute or publish, that

    in whole or in part contains the Program or any part thereof, either

    with or without modifications, to be licensed at no charge to all

    third parties under the terms of this General Public License (except

    that you may choose to grant warranty protection to some or all

    third parties, at your option).

    c) If the modified program normally reads commands interactively when

    run, you must cause it, when started running for such interactive use

    in the simplest and most usual way, to print or display an

    announcement including an appropriate copyright notice and a notice

    that there is no warranty (or else, saying that you provide a

    warranty) and that users may redistribute the program under these

    conditions, and telling the user how to view a copy of this General

    Public License.

    d) You may charge a fee for the physical act of transferring a

    copy, and you may at your option offer warranty protection in

    exchange for a fee.

Mere aggregation of another independent work with the Program (or its

derivative) on a volume of a storage or distribution medium does not bring

the other work under the scope of these terms.

  3. You may copy and distribute the Program (or a portion or derivative of

it, under Paragraph 2) in object code or executable form under the terms of

Paragraphs 1 and 2 above provided that you also do one of the following:

    a) accompany it with the complete corresponding machine-readable

    source code, which must be distributed under the terms of

    Paragraphs 1 and 2 above; or,

    b) accompany it with a written offer, valid for at least three

    years, to give any third party free (except for a nominal charge

    for the cost of distribution) a complete machine-readable copy of the

    corresponding source code, to be distributed under the terms of

    Paragraphs 1 and 2 above; or,

    c) accompany it with the information you received as to where the

    corresponding source code may be obtained.  (This alternative is

    allowed only for noncommercial distribution and only if you

    received the program in object code or executable form alone.)

Source code for a work means the preferred form of the work for making

modifications to it.  For an executable file, complete source code means

all the source code for all modules it contains; but, as a special

exception, it need not include source code for modules which are standard

libraries that accompany the operating system on which the executable

file runs, or for standard header files or definitions files that

accompany that operating system.

  4. You may not copy, modify, sublicense, distribute or transfer the

Program except as expressly provided under this General Public License.

Any attempt otherwise to copy, modify, sublicense, distribute or transfer

the Program is void, and will automatically terminate your rights to use

the Program under this License.  However, parties who have received

copies, or rights to use copies, from you under this General Public

License will not have their licenses terminated so long as such parties

remain in full compliance.

  5. By copying, distributing or modifying the Program (or any work based

on the Program) you indicate your acceptance of this license to do so,

and all its terms and conditions.

  6. Each time you redistribute the Program (or any work based on the

Program), the recipient automatically receives a license from the original

licensor to copy, distribute or modify the Program subject to these

terms and conditions.  You may not impose any further restrictions on the

recipients' exercise of the rights granted herein.

  7. The Free Software Foundation may publish revised and/or new versions

of the General Public License from time to time.  Such new versions will

be similar in spirit to the present version, but may differ in detail to

address new problems or concerns.

Each version is given a distinguishing version number.  If the Program

specifies a version number of the license which applies to it and "any

later version", you have the option of following the terms and conditions

either of that version or of any later version published by the Free

Software Foundation.  If the Program does not specify a version number of

the license, you may choose any version ever published by the Free Software

Foundation.

  8. If you wish to incorporate parts of the Program into other free

programs whose distribution conditions are different, write to the author

to ask for permission.  For software which is copyrighted by the Free

Software Foundation, write to the Free Software Foundation; we sometimes

make exceptions for this.  Our decision will be guided by the two goals

of preserving the free status of all derivatives of our free software and

of promoting the sharing and reuse of software generally.

              NO WARRANTY

  9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY

FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN

OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES

PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED

OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS

TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE

PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,

REPAIR OR CORRECTION.

  10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING

WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR

REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,

INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING

OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED

TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY

YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER

PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES.