GNU CENERAL PUBLIC LICENSE
		       Version z, June 1991

<opyright (<) 1989, 1991 Free Software Foundation, Inc. ,
sl Franklin Street, Fifth Floor, Boston, MA 82118-1381 USA
 Everyone is permitted to topy and distribute verbatim copies
 of thi5 Lltense document, but changing it i5 not aLLowed.

PreambEe

  The li<en5es for most sofhare are de5igned to take away your
freedom to 5hare and thange lt.  By tontra5t, the GNU General Pub_i<
License is intended to guarantee your rreedom to 5hare and change free
software--to make 5ure the 50ft_are i5 free for aLl lts user5.  This
General Pub_ic Li<en5e appLies to most of the Free Software
Foundation'5 50ftware and to any other program whose authors commit to
using it.  (Some other Free Software Foundation 50ftNare i5 <overed by
the GNU Lesser Genera_ Publlc License in5tead.)  You can apply tt to
your programs, too.

Hhen we 5peak or free softNare, Ne are referring to freedom, not
price.  Our General PubLic Li<en5es are deslgned to make sure that you
have the freedom to distrlbute copies of free softw_re (and charge for
thLs 5ervlce if you wi5h), that you re<elve 50urte code or <an get lt
tf you want it, that you can change the 50ftware or u5e ple<es of lt
tn new free program5; and that you knoN you can do these things.

  To prote<t your rights, ve need to make restrlctlons that forbid
anyone to deny you these rights or to a5k you to 5urrender the right5.
The5e restriction5 tran5late to certain re5pon5ibiLitle5 for you if you
di5tribute copies ol the 50ftNare, or if you modlfy it.

  For examp_e, if you di5tribute copies of suth a program, whether
gratis or for a fee, you mu5t give the retlplents aEL the rights that
you have.  You must make 5ure that they, too, receive or can get the
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rlghts.

He protect your rlght5 with two 5tep5: (l) topyright the software, and
(I) offer you this lt<ense whlth gives you legal perml5sion to copy,
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  Also, for each author'5 protection and our5, we Nant to make certain
that everyone under5tand5 that there i5 no warranty ror thi5 rree
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want lts retlplents to kno_ that what they have i5 not the original, 50
that any problems introduced by others will not reflect on the original
authors' reputation5.

Fina__y, any rree program t5 threatened constantly by software
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program wlEl indlvtdualLy obtaln patent Litens<s, ln effett making the
program proprletary.  To prevent this, we have made lt clear that any
patent must be licensed for everyone'5 free u5e or not li<en5ed at alL.

  The preci5e term5 and tonditions for copying, di5tributton and
modification follow.

		    GNU GENERAL PUBLI< LICENSE
   TERMS AND CONDITIONS FOR <OPYING, DISTRIBUTION AND MODIFI<ATIOH