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perlgpl



SYNOPSIS

        You can refer to this document in Pod via "L<perlgpl>"
        Or you can see this document by entering "perldoc perlgpl"


DESCRIPTION

       This is "The GNU General Public License, version 2".  It's
       here so that modules, programs, etc., that want to declare
       this as their distribution license, can link to it.

       It is also one of the two licenses Perl allows itself to
       be redistributed and/or modified; for the other one, the
       Perl Artistic License, see the perlartistic.


GNU GENERAL PUBLIC LICENSE

                           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 free­
       dom 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 free­
       dom, 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,
       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 redis­
       tributors 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

       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 trans­
       lated 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 modifica­
       tion 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 (indepen­
       dent 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 Pro­
       gram's source code as you receive it, in any medium, pro­
       vided 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 protec­
       tion in exchange for a fee.

           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 dis­
       tribute 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

       special exception, the source code distributed need not
       include anything that is normally distributed (in either
       source or binary form) with the major components (com­
       piler, kernel, and so on) of the operating system on which
       the executable runs, unless that component itself accompa­
       nies 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 dis­
       tribute the Program is void, and will automatically termi­
       nate 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 per­
       mission to modify or distribute the Program or its deriva­
       tive works.  These actions are prohibited by law if you do
       not accept this License.  Therefore, by modifying or dis­
       tributing 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 restric­
       tions 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 lim­
       ited to patent issues), conditions are imposed on you
       (whether by court order, agreement or otherwise) that con­
       tradict 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 obliga­
       tions under this License and any other pertinent obliga­
       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 soft­
       ware distribution system, which is implemented by public
       license practices.  Many people have made generous contri­
       butions 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 coun­
       tries, 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 dif­
       ferent, write to the author to ask for permission.  For
       software which is copyrighted by the Free Software Founda­
       tion, 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 deriva­
       tives of our free software and of promoting the sharing
       and reuse of software generally.

                                   NO WARRANTY

       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, INCLUD­
       ING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAM­
       AGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRO­
       GRAM (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

       --

               Appendix: 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) 19yy  <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) 19yy name of author

         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.

       [End.]

perl v5.8.1                 2003-09-02                 PERLGPL(1)
  




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