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- GNU GENERAL PUBLIC LICENSE
- Version 2, June 1991
- Copyright (C) 1989, 1991 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
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- 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
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- 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
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- 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 an idea of what it does.
- Copyright (C) yyyy 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) yyyy 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.
- ----------------------------------------------------------------------
- ----------
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- Copyright notice above.
- Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111, USA
- Updated: 16 Feb 1998 tower
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