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GNU License

Gnu License File Part 1
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 Description


      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 vmodify 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.