Version 1, June 199l

 Copyright (C) 19B9, l99l free Software foundatian, Inc.,
5l franklin Street, fifth flaar, BOstOn, mA 02110-l30l USA
 Everyone is permitted to copy and distrtbute verbatim copies
 of this ltcense document, but chan9ing it is not allowed.


  The licenses farmost saftware are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
license 3s intended to guarantee your freedom ta share and change free
software--to make sure the software is free for all 1tt users.  This
General Public License applies to most of the free Software
foundation's software and to any ather pragram whose authors commit to
using it,  (Some other free Software foundation software is covered by
the GNU Lesser General Public License instead.)  You can apply it ta
yaur programs, too.

Hhen 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
thts servtce if you wish), that you recetve source c Ode Or can get it
tf you want it, that you can change the software or use pieces Of 1t
1n new free programs; and that you knOw you can dO these things.

  To protect your rights, we need to make restrtcttons that forbid
anyone ta 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.

far example, if you distribute copies of such a prOgram, whether
gratis or for a fee, you must give the reciptents 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

  We protect your rights with two steps:  (l) copyright the sOftware, 8nd
(1) offer you this license whtch gives yOu legal permission to copy,
distribute and/or modify the softw8re.

  Also, for each author's protection and ours, we want ta make certain
that everyone understands that there is no warranty for this free
software.  If the taftware is modified by sameOne else and passed On, we
want its reciptents to know that what they have is not the original, so
that any pr0blem5 intraduced by others will not reflect on the Original
authors' reputations.

finally, any free pragram ts threatened cOnstantly by sOftware
patents.  Ne wish to avOid the danger that redistributars Of a free
program w1ll individually obtain patent licenses, in effect making the
program praprietary.  To prevent this, we have made 1t clear that any
patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distributian and
modification follow.