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@node Library Copying
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@unnumbered GNU Lesser General Public License
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@cindex LGPL, GNU Lesser General Public License
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@center Version 2.1, February 1999
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@display
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Copyright @copyright{} 1991, 1999 Free Software Foundation, Inc.
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59 Temple Place -- Suite 330, Boston, MA 02111-1307, USA
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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[This is the first released version of the Lesser GPL.  It also counts
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as the successor of the GNU Library Public License, version 2, hence the
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version number 2.1.]
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@end display
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@heading Preamble
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freedom to share and change it.  By contrast, the GNU General Public
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Licenses are intended to guarantee your freedom to share and change
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free software---to make sure the software is free for all its users.
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  This license, the Lesser General Public License, applies to some
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@iftex
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@heading TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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@end iftex
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@ifinfo
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@center GNU LESSER GENERAL PUBLIC LICENSE
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@center TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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License and any other pertinent obligations, then as a consequence you
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may not distribute the Library at all.  For example, if a patent
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license would not permit royalty-free redistribution of the Library by
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all those who receive copies directly or indirectly through you, then
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the only way you could satisfy both it and this License would be to
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refrain entirely from distribution of the Library.
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If any portion of this section is held invalid or unenforceable under any
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particular circumstance, the balance of the section is intended to apply,
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and the section as a whole is intended to apply in other circumstances.
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It is not the purpose of this section to induce you to infringe any
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patents or other property right claims or to contest validity of any
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such claims; this section has the sole purpose of protecting the
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integrity of the free software distribution system which is
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implemented by public license practices.  Many people have made
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generous contributions to the wide range of software distributed
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through that system in reliance on consistent application of that
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system; it is up to the author/donor to decide if he or she is willing
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to distribute software through any other system and a licensee cannot
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impose that choice.
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This section is intended to make thoroughly clear what is believed to
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be a consequence of the rest of this License.
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@item
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If the distribution and/or use of the Library is restricted in
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certain countries either by patents or by copyrighted interfaces, the
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original copyright holder who places the Library under this License may add
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an explicit geographical distribution limitation excluding those countries,
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so that distribution is permitted only in or among countries not thus
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excluded.  In such case, this License incorporates the limitation as if
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written in the body of this License.
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@item
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The Free Software Foundation may publish revised and/or new
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versions of the Lesser General Public License from time to time.
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Such new versions will be similar in spirit to the present version,
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but may differ in detail to address new problems or concerns.
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Each version is given a distinguishing version number.  If the Library
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specifies a version number of this License which applies to it and
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``any later version'', you have the option of following the terms and
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conditions either of that version or of any later version published by
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the Free Software Foundation.  If the Library does not specify a
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license version number, you may choose any version ever published by
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the Free Software Foundation.
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@item
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If you wish to incorporate parts of the Library into other free
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programs whose distribution conditions are incompatible with these,
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write to the author to ask for permission.  For software which is
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copyrighted by the Free Software Foundation, write to the Free
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Software Foundation; we sometimes make exceptions for this.  Our
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decision will be guided by the two goals of preserving the free status
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of all derivatives of our free software and of promoting the sharing
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and reuse of software generally.
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@center NO WARRANTY
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@item
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BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
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WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
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EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
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OTHER PARTIES PROVIDE THE LIBRARY ``AS IS'' WITHOUT WARRANTY OF ANY
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KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
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LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
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THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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@item
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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
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WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
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AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
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FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
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CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
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LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
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RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
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FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
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SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGES.
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@end enumerate
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@iftex
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@heading END OF TERMS AND CONDITIONS
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@end iftex
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@ifinfo
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@center END OF TERMS AND CONDITIONS
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@end ifinfo
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@page
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@heading How to Apply These Terms to Your New Libraries
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  If you develop a new library, and you want it to be of the greatest
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possible use to the public, we recommend making it free software that
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everyone can redistribute and change.  You can do so by permitting
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redistribution under these terms (or, alternatively, under the terms of the
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ordinary General Public License).
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  To apply these terms, attach the following notices to the library.  It is
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safest to attach them to the start of each source file to most effectively
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convey the exclusion of warranty; and each file should have at least the
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``copyright'' line and a pointer to where the full notice is found.
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@smallexample
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@var{one line to give the library's name and an idea of what it does.}
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Copyright (C) @var{year}  @var{name of author}
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
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USA.
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@end smallexample
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Also add information on how to contact you by electronic and paper mail.
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You should also get your employer (if you work as a programmer) or your
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school, if any, to sign a ``copyright disclaimer'' for the library, if
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necessary.  Here is a sample; alter the names:
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@smallexample
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Yoyodyne, Inc., hereby disclaims all copyright interest in the library
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`Frob' (a library for tweaking knobs) written by James Random Hacker.
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@var{signature of Ty Coon}, 1 April 1990
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Ty Coon, President of Vice
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@end smallexample
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That's all there is to it!