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<center> GNU GENERAL PUBLIC LICENSE
<br> Version 2, June 1991
<p> Copyright (C) 1989, 1991 Free Software Foundation, Inc.
<br> 59 Temple Place, Suite 330, Boston, MA
<br> Everyone is permitted to copy and distribute verbatim copies
<br> of this license document, but changing it is not allowed.
<p> The licenses for most software are designed to take away your
<br>freedom to share and change it. By contrast, the GNU General
<br>License is intended to guarantee your freedom to share and change free
<br>software--to make sure the software is free for all its users.
<br>General Public License applies to most of the Free Software
<br>Foundation's software and to any other program whose authors commit
<br>using it. (Some other Free Software Foundation software is covered
<br>the GNU Library General Public License instead.) You can apply
<br>your programs, too.
<p> When we speak of free software, we are referring to freedom,
<br>price. Our General Public Licenses are designed to make sure
<br>have the freedom to distribute copies of free software (and charge
<br>this service if you wish), that you receive source code or can get
<br>if you want it, that you can change the software or use pieces of it
<br>in new free programs; and that you know you can do these things.
<p> To protect your rights, we need to make restrictions that forbid
<br>anyone to deny you these rights or to ask you to surrender the rights.
<br>These restrictions translate to certain responsibilities for you if
<br>distribute copies of the software, or if you modify it.
<p> For example, if you distribute copies of such a program, whether
<br>gratis or for a fee, you must give the recipients all the rights that
<br>you have. You must make sure that they, too, receive or can get
<br>source code. And you must show them these terms so they know
<p> We protect your rights with two steps: (1) copyright the software,
<br>(2) offer you this license which gives you legal permission to copy,
<br>distribute and/or modify the software.
<p> Also, for each author's protection and ours, we want to make
<br>that everyone understands that there is no warranty for this free
<br>software. If the software is modified by someone else and passed
<br>want its recipients to know that what they have is not the original,
<br>that any problems introduced by others will not reflect on the original
<p> Finally, any free program is threatened constantly by software
<br>patents. We wish to avoid the danger that redistributors of a
<br>program will individually obtain patent licenses, in effect making
<br>program proprietary. To prevent this, we have made it clear that
<br>patent must be licensed for everyone's free use or not licensed at
<p> The precise terms and conditions for copying, distribution and
<p> GNU GENERAL PUBLIC LICENSE
<br> TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
<p> 0. This License applies to any program or other work which contains
<br>a notice placed by the copyright holder saying it may be distributed
<br>under the terms of this General Public License. The "Program",
<br>refers to any such program or work, and a "work based on the Program"
<br>means either the Program or any derivative work under copyright law:
<br>that is to say, a work containing the Program or a portion of it,
<br>either verbatim or with modifications and/or translated into another
<br>language. (Hereinafter, translation is included without limitation
<br>the term "modification".) Each licensee is addressed as "you".
<p>Activities other than copying, distribution and modification are not
<br>covered by this License; they are outside its scope. The act
<br>running the Program is not restricted, and the output from the Program
<br>is covered only if its contents constitute a work based on the
<br>Program (independent of having been made by running the Program).
<br>Whether that is true depends on what the Program does.
<p> 1. You may copy and distribute verbatim copies of the Program's
<br>source code as you receive it, in any medium, provided that you
<br>conspicuously and appropriately publish on each copy an appropriate
<br>copyright notice and disclaimer of warranty; keep intact all the
<br>notices that refer to this License and to the absence of any warranty;
<br>and give any other recipients of the Program a copy of this License
<br>along with the Program.
<p>You may charge a fee for the physical act of transferring a copy, and
<br>you may at your option offer warranty protection in exchange for a
<p> 2. You may modify your copy or copies of the Program or any portion
<br>of it, thus forming a work based on the Program, and copy and
<br>distribute such modifications or work under the terms of Section 1
<br>above, provided that you also meet all of these conditions:
<p> a) You must cause the modified files to carry prominent
<br> stating that you changed the files and the date
of any change.
<p> b) You must cause any work that you distribute or
publish, that in
<br> whole or in part contains or is derived from the
Program or any
<br> part thereof, to be licensed as a whole at no charge
to all third
<br> parties under the terms of this License.
<p> c) If the modified program normally reads commands
<br> when run, you must cause it, when started running
<br> interactive use in the most ordinary way, to print
or display an
<br> announcement including an appropriate copyright
notice and a
<br> notice that there is no warranty (or else, saying
that you provide
<br> a warranty) and that users may redistribute the
<br> these conditions, and telling the user how to view
a copy of this
<br> License. (Exception: if the Program itself
is interactive but
<br> does not normally print such an announcement, your
work based on
<br> the Program is not required to print an announcement.)
<p>These requirements apply to the modified work as a whole. If
<br>identifiable sections of that work are not derived from the Program,
<br>and can be reasonably considered independent and separate works in
<br>themselves, then this License, and its terms, do not apply to those
<br>sections when you distribute them as separate works. But when
<br>distribute the same sections as part of a whole which is a work based
<br>on the Program, the distribution of the whole must be on the terms
<br>this License, whose permissions for other licensees extend to the
<br>entire whole, and thus to each and every part regardless of who wrote
<p>Thus, it is not the intent of this section to claim rights or contest
<br>your rights to work written entirely by you; rather, the intent is
<br>exercise the right to control the distribution of derivative or
<br>collective works based on the Program.
<p>In addition, mere aggregation of another work not based on the Program
<br>with the Program (or with a work based on the Program) on a volume
<br>a storage or distribution medium does not bring the other work under
<br>the scope of this License.
<p> 3. You may copy and distribute the Program (or a work based on
<br>under Section 2) in object code or executable form under the terms
<br>Sections 1 and 2 above provided that you also do one of the following:
<p> a) Accompany it with the complete corresponding machine-readable
<br> source code, which must be distributed under the
terms of Sections
<br> 1 and 2 above on a medium customarily used for software
<p> b) Accompany it with a written offer, valid for at
<br> years, to give any third party, for a charge no
more than your
<br> cost of physically performing source distribution,
<br> machine-readable copy of the corresponding source
code, to be
<br> distributed under the terms of Sections 1 and 2
above on a medium
<br> customarily used for software interchange; or,
<p> c) Accompany it with the information you received
as to the offer
<br> to distribute corresponding source code. (This
<br> allowed only for noncommercial distribution and
only if you
<br> received the program in object code or executable
form with such
<br> an offer, in accord with Subsection b above.)
<p>The source code for a work means the preferred form of the work for
<br>making modifications to it. For an executable work, complete
<br>code means all the source code for all modules it contains, plus any
<br>associated interface definition files, plus the scripts used to
<br>control compilation and installation of the executable. However,
<br>special exception, the source code distributed need not include
<br>anything that is normally distributed (in either source or binary
<br>form) with the major components (compiler, kernel, and so on) of the
<br>operating system on which the executable runs, unless that component
<br>itself accompanies the executable.
<p>If distribution of executable or object code is made by offering
<br>access to copy from a designated place, then offering equivalent
<br>access to copy the source code from the same place counts as
<br>distribution of the source code, even though third parties are not
<br>compelled to copy the source along with the object code.
<p> 4. You may not copy, modify, sublicense, or distribute the Program
<br>except as expressly provided under this License. Any attempt
<br>otherwise to copy, modify, sublicense or distribute the Program is
<br>void, and will automatically terminate your rights under this License.
<br>However, parties who have received copies, or rights, from you under
<br>this License will not have their licenses terminated so long as such
<br>parties remain in full compliance.
<p> 5. You are not required to accept this License, since you have
<br>signed it. However, nothing else grants you permission to modify
<br>distribute the Program or its derivative works. These actions
<br>prohibited by law if you do not accept this License. Therefore,
<br>modifying or distributing the Program (or any work based on the
<br>Program), you indicate your acceptance of this License to do so, and
<br>all its terms and conditions for copying, distributing or modifying
<br>the Program or works based on it.
<p> 6. Each time you redistribute the Program (or any work based
<br>Program), the recipient automatically receives a license from the
<br>original licensor to copy, distribute or modify the Program subject
<br>these terms and conditions. You may not impose any further
<br>restrictions on the recipients' exercise of the rights granted herein.
<br>You are not responsible for enforcing compliance by third parties to
<p> 7. If, as a consequence of a court judgment or allegation of
<br>infringement or for any other reason (not limited to patent issues),
<br>conditions are imposed on you (whether by court order, agreement or
<br>otherwise) that contradict the conditions of this License, they do
<br>excuse you from the conditions of this License. If you cannot
<br>distribute so as to satisfy simultaneously your obligations under this
<br>License and any other pertinent obligations, then as a consequence
<br>may not distribute the Program at all. For example, if a patent
<br>license would not permit royalty-free redistribution of the Program
<br>all those who receive copies directly or indirectly through you, then
<br>the only way you could satisfy both it and this License would be to
<br>refrain entirely from distribution of the Program.
<p>If any portion of this section is held invalid or unenforceable under
<br>any particular circumstance, the balance of the section is intended
<br>apply and the section as a whole is intended to apply in other
<p>It is not the purpose of this section to induce you to infringe any
<br>patents or other property right claims or to contest validity of any
<br>such claims; this section has the sole purpose of protecting the
<br>integrity of the free software distribution system, which is
<br>implemented by public license practices. Many people have made
<br>generous contributions to the wide range of software distributed
<br>through that system in reliance on consistent application of that
<br>system; it is up to the author/donor to decide if he or she is willing
<br>to distribute software through any other system and a licensee cannot
<br>impose that choice.
<p>This section is intended to make thoroughly clear what is believed to
<br>be a consequence of the rest of this License.
<p> 8. If the distribution and/or use of the Program is restricted
<br>certain countries either by patents or by copyrighted interfaces, the
<br>original copyright holder who places the Program under this License
<br>may add an explicit geographical distribution limitation excluding
<br>those countries, so that distribution is permitted only in or among
<br>countries not thus excluded. In such case, this License incorporates
<br>the limitation as if written in the body of this License.
<p> 9. The Free Software Foundation may publish revised and/or new
<br>of the General Public License from time to time. Such new versions
<br>be similar in spirit to the present version, but may differ in detail
<br>address new problems or concerns.
<p>Each version is given a distinguishing version number. If the
<br>specifies a version number of this License which applies to it and
<br>later version", you have the option of following the terms and conditions
<br>either of that version or of any later version published by the Free
<br>Software Foundation. If the Program does not specify a version
<br>this License, you may choose any version ever published by the Free
<p> 10. If you wish to incorporate parts of the Program into other
<br>programs whose distribution conditions are different, write to the
<br>to ask for permission. For software which is copyrighted by the
<br>Software Foundation, write to the Free Software Foundation; we sometimes
<br>make exceptions for this. Our decision will be guided by the
<br>of preserving the free status of all derivatives of our free software
<br>of promoting the sharing and reuse of software generally.
<p> NO WARRANTY
<p> 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS
<br>FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT
<br>OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
<br>PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
<br>OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
<br>MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE
<br>TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
<br>PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
<br>REPAIR OR CORRECTION.
<p> 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO
<br>WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
<br>REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
<br>INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
<br>OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
<br>TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED
<br>YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY
<br>PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
<br>POSSIBILITY OF SUCH DAMAGES.
<p> END OF TERMS AND CONDITIONS
<p> How to Apply These Terms to Your New Programs
<p> If you develop a new program, and you want it to be of the greatest
<br>possible use to the public, the best way to achieve this is to make
<br>free software which everyone can redistribute and change under these
<p> To do so, attach the following notices to the program.
It is safest
<br>to attach them to the start of each source file to most effectively
<br>convey the exclusion of warranty; and each file should have at least
<br>the "copyright" line and a pointer to where the full notice is found.
<p> <one line to give the program's name and a brief
idea of what it does.>
<br> Copyright (C) <year> <name of author>
<p> This program is free software; you can redistribute
it and/or modify
<br> it under the terms of the GNU General Public License
as published by
<br> the Free Software Foundation; either version 2 of
the License, or
<br> (at your option) any later version.
<p> This program is distributed in the hope that it will
<br> but WITHOUT ANY WARRANTY; without even the implied
<br> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
<br> GNU General Public License for more details.
<p> You should have received a copy of the GNU General
<br> along with this program; if not, write to the Free
<br> Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
<p>Also add information on how to contact you by electronic and paper mail.
<p>If the program is interactive, make it output a short notice like this
<br>when it starts in an interactive mode:
<p> Gnomovision version 69, Copyright (C) year
name of author
<br> Gnomovision comes with ABSOLUTELY NO WARRANTY; for
details type `show w'.
<br> This is free software, and you are welcome to redistribute
<br> under certain conditions; type `show c' for details.
<p>The hypothetical commands `show w' and `show c' should show the appropriate
<br>parts of the General Public License. Of course, the commands
you use may
<br>be called something other than `show w' and `show c'; they could even
<br>mouse-clicks or menu items--whatever suits your program.
<p>You should also get your employer (if you work as a programmer) or your
<br>school, if any, to sign a "copyright disclaimer" for the program, if
<br>necessary. Here is a sample; alter the names:
<p> Yoyodyne, Inc., hereby disclaims all copyright interest in the
<br> `Gnomovision' (which makes passes at compilers) written by James
<p> <signature of Ty Coon>, 1 April 1989
<br> Ty Coon, President of Vice
<p>This General Public License does not permit incorporating your program
<br>proprietary programs. If your program is a subroutine library,
<br>consider it more useful to permit linking proprietary applications
<br>library. If this is what you want to do, use the GNU Library
<br>Public License instead of this License.