license.txt

The GNU General Public License (GPL)

Copyright (C) Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 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.

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. This License 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 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.

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 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.

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

* How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the greatest possible use to the public, 
the best way to achieve this is to make it free software which everyone can redistribute and 
change under these terms.

To do so, attach the following notices to the program. It is safest to attach them to the start 
of each source file to most effectively convey the exclusion of warranty; and each file should 
have at least the "copyright" line and a pointer to where the full notice is found.

    One line to give the program's name and a brief idea of what it does.
    Copyright (C) <year> <name of author>

    This program is free software; you can redistribute it and/or modify it under the terms of 
    the GNU General Public License as published by the Free Software Foundation; either 
    version 2 of the License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 
    the GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along with this program; if 
    not, write to the Free Software Foundation, Inc., 
    59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this when it starts in an 
interactive mode:

    Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with 
    ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome 
    to redistribute it under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate parts of the 
General Public License. Of course, the commands you use may be called something other than 
`show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your 
program.

You should also get your employer (if you work as a programmer) or your school, if any, to sign a 
"copyright disclaimer" for the program, if necessary. Here is a sample; alter the names:

    Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' 
    (which makes passes at compilers) written by James Hacker.

    signature of Ty Coon, 1 April 1989
    Ty Coon, President of Vice



	This General Public License does not permit incorporating your program into proprietary 
programs. If your program is a subroutine library, you may consider it more useful to permit 
linking proprietary applications with the library. If this is what you want to do, use the 
GNU Library General Public License instead of this License.