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GNU GENERAL PUBLIC LICENSE Version 2, June 1991

02139, USA Everyone is permitted to copy and distribute verbatim copies of this license

document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your freedom to share and change

it. By contrast, the GNU 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. This

General Public License applies to most of the Free Software Foundation's software and to any

other program whose authors commit to using it. (Some other Free Software Foundation

software is covered by the GNU Library General Public License instead.) You can apply it to

your programs, too.

When we speak of free software, we are referring to freedom, not price. Our General Public

Licenses are designed to make sure that you have the freedom to distribute copies of free

software (and charge for this service if you wish), 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 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 show them these terms so they know 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.

Finally, any free program is threatened constantly by software patents. We wish to avoid the

danger that redistributors of a free program will individually obtain patent licenses, in effect

making the program proprietary. To prevent this, we have made it clear that any patent must

be licensed for everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and modification follow.

GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING,

DISTRIBUTION AND MODIFICATION

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0. This License applies to any program or other work which contains a notice placed by the

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

Program" means either the Program or any derivative work under copyright law: that is to say,

a work containing the Program or a portion of it, either verbatim or with modifications and/or

translated into another language. (Hereinafter, translation is included without limitation in the

term "modification".) Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not covered by this License;

they are outside its scope. The act of running the Program is not restricted, and the output

from the Program is covered only if its contents constitute a work based on the Program

(independent of having been made by running the Program). Whether that is true depends on

what the Program does.

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 License and to the absence of any warranty; and give any other recipients of the

Program a copy of this License along with the Program.

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.

2. You may modify your copy or copies of the Program or any portion of it, thus forming a

work based on the Program, and copy and distribute such modifications or work under the

terms of Section 1 above, provided that you also meet all of these conditions:

a) You must cause the modified files to carry prominent notices stating that you changed

the files and the date of any change.

b) You must cause any work that you distribute or publish, that in whole or in part

contains or is derived from the Program or any part thereof, to be licensed as a whole at no

charge to all third parties under the terms of this License.

c) If the modified program normally reads commands interactively when run, you must

cause it, when started running for such interactive use in the most ordinary 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

License. (Exception: if the Program itself is interactive but does not normally print such an

announcement, your work based on the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole. If identifiable sections of that

work are not derived from the Program, and can be reasonably considered independent and

separate works in themselves, then this License, and its terms, do not apply to those sections

when you distribute them as separate works. But when you distribute the same sections as

part of a whole which is a work based on the Program, the distribution of the whole must be

on the terms of this License, whose permissions for other licensees extend to the entire whole,

and thus to each and every part regardless of who wrote it.

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Thus, it is not the intent of this section to claim rights or contest your rights to work written

entirely by you; rather, the intent is to exercise the right to control the distribution of

derivative or collective works based on the Program.

In addition, mere aggregation of another work not based on the Program with the Program (or

with a work based on the Program) on a volume of a storage or distribution medium does not

bring the other work under the scope of this License.

3. You may copy and distribute the Program (or a work based on it, under Section 2) in

object code or executable form under the terms of Sections 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 Sections 1 and 2 above on a medium customarily used

for software interchange; or,

b) Accompany it with a written offer, valid for at least three years, to give any third party,

for a charge no more than your cost of physically performing source distribution, a complete

machine-readable copy of the corresponding source code, to be distributed under the terms

of Sections 1 and 2 above on a medium customarily used for software interchange; or,

c) Accompany it with the information you received as to the offer to distribute

corresponding source code. (This alternative is allowed only for noncommercial

distribution and only if you received the program in object code or executable form with

such an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for making modifications to

it. For an executable work, complete source code means all the source code for all modules it

contains, plus any associated interface definition files, plus the scripts used to control

compilation and installation of the executable. However, as a special exception, the source

code distributed need not include anything that is normally distributed (in either source or

binary form) with the major components (compiler, kernel, and so on) of the operating system

on which the executable runs, unless that component itself accompanies the executable.

If distribution of executable or object code is made by offering access to copy from a

designated place, then offering equivalent access to copy the source code from the same place

counts as distribution of the source code, even though third parties are not compelled to copy

the source along with the object code.

4. You may not copy, modify, sublicense, or distribute the Program except as expressly

provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute

the Program is void, and will automatically terminate your rights under this License.

However, parties who have received copies, or rights, from you under this License will not

have their licenses terminated so long as such parties remain in full compliance.

5. You are not required to accept this License, since you have not signed it. However,

nothing else grants you permission to modify or distribute the Program or its derivative

works. These actions are prohibited by law if you do not accept this License. Therefore, by

modifying or distributing the Program (or any work based on the Program), you indicate your

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acceptance of this License to do so, and all its terms and conditions for copying, distributing

or modifying the Program or works based on it.

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. You are not responsible for enforcing

compliance by third parties to this License.

7. If, as a consequence of a court judgment or allegation of patent infringement or for any

other reason (not limited to patent issues), conditions are imposed on you (whether by court

order, agreement or otherwise) that contradict the conditions of this License, they do not

excuse you from the conditions of this License. If you cannot distribute so as to satisfy

simultaneously your obligations under this License and any other pertinent obligations, then

as a consequence you may not distribute the Program at all. For example, if a patent license

would not permit royalty-free redistribution of the Program by all those who receive copies

directly or indirectly through you, then the only way you could satisfy both it and this License

would be to refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under any particular

circumstance, the balance of the section is intended to apply and the section as a whole is

intended to apply in other circumstances.

It is not the purpose of this section to induce you to infringe any patents or other property

right claims or to contest validity of any such claims; this section has the sole purpose of

protecting the integrity of the free software distribution system, which is implemented by

public license practices. Many people have made generous contributions to the wide range of

software distributed through that system in reliance on consistent application of that system; it

is up to the author/donor to decide if he or she is willing to distribute software through any

other system and a licensee cannot impose that choice.

This section is intended to make thoroughly clear what is believed to be a consequence of the

rest of this License.

8. If the distribution and/or use of the Program is restricted in certain countries either by

patents or by copyrighted interfaces, the original copyright holder who places the Program

under this License may add an explicit geographical distribution limitation excluding those

countries, so that distribution is permitted only in or among countries not thus excluded. In

such case, this License incorporates the limitation as if written in the body of this License.

9. 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 this 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 this

License, you may choose any version ever published by the Free Software Foundation.

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10. 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

11. 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.

12. 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.

END OF TERMS AND CONDITIONS