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-### GNU GENERAL PUBLIC LICENSE
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+### GNU LESSER GENERAL PUBLIC LICENSE
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-Version 2, June 1991
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-
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- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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+Version 2.1, February 1999
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+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+
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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
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+ the version number 2.1.]
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+
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### Preamble
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The licenses for most software are designed to take away your freedom
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-to share and change it. By contrast, the GNU General Public License is
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-intended to guarantee your freedom to share and change free
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-software--to make sure the software is free for all its users. This
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-General Public License applies to most of the Free Software
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-Foundation's software and to any other program whose authors commit to
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-using it. (Some other Free Software Foundation software is covered by
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-the GNU Lesser General Public License instead.) You can apply it to
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-your programs, too.
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-
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-When we speak of free software, we are referring to freedom, not
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-price. Our General Public Licenses are designed to make sure that you
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-have the freedom to distribute copies of free software (and charge for
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-this service if you wish), that you receive source code or can get it
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-if you want it, that you can change the software or use pieces of it
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-in new free programs; and that you know you can do these things.
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+to share and change it. By contrast, the GNU General Public Licenses
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+are intended to guarantee your freedom to share and change free
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+software--to make sure the software is free for all its users.
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+
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+This license, the Lesser General Public License, applies to some
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+specially designated software packages--typically libraries--of the
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+Free Software Foundation and other authors who decide to use it. You
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+can use it too, but we suggest you first think carefully about whether
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+this license or the ordinary General Public License is the better
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+strategy to use in any particular case, based on the explanations
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+below.
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+
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+When we speak of free software, we are referring to freedom of use,
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+not price. Our General Public Licenses are designed to make sure that
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+you have the freedom to distribute copies of free software (and charge
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+for this service if you wish); that you receive source code or can get
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+it if you want it; that you can change the software and use pieces of
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+it in new free programs; and that you are informed that you can do
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+these things.
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To protect your rights, we need to make restrictions that forbid
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-anyone to deny you these rights or to ask you to surrender the rights.
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-These restrictions translate to certain responsibilities for you if
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-you distribute copies of the software, or if you modify it.
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-
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-For example, if you distribute copies of such a program, whether
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-gratis or for a fee, you must give the recipients all the rights that
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-you have. You must make sure that they, too, receive or can get the
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-source code. And you must show them these terms so they know their
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-rights.
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-
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-We protect your rights with two steps: (1) copyright the software, and
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-(2) offer you this license which gives you legal permission to copy,
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-distribute and/or modify the software.
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-
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-Also, for each author's protection and ours, we want to make certain
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-that everyone understands that there is no warranty for this free
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-software. If the software is modified by someone else and passed on,
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-we want its recipients to know that what they have is not the
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-original, so that any problems introduced by others will not reflect
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-on the original authors' reputations.
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-
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-Finally, any free program is threatened constantly by software
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-patents. We wish to avoid the danger that redistributors of a free
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-program will individually obtain patent licenses, in effect making the
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-program proprietary. To prevent this, we have made it clear that any
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-patent must be licensed for everyone's free use or not licensed at
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-all.
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+distributors to deny you these rights or to ask you to surrender these
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+rights. These restrictions translate to certain responsibilities for
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+you if you distribute copies of the library or if you modify it.
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+
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+For example, if you distribute copies of the library, whether gratis
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+or for a fee, you must give the recipients all the rights that we gave
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+you. You must make sure that they, too, receive or can get the source
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+code. If you link other code with the library, you must provide
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+complete object files to the recipients, so that they can relink them
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+with the library after making changes to the library and recompiling
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+it. And you must show them these terms so they know their rights.
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+
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+We protect your rights with a two-step method: (1) we copyright the
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+library, and (2) we offer you this license, which gives you legal
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+permission to copy, distribute and/or modify the library.
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+
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+To protect each distributor, we want to make it very clear that there
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+is no warranty for the free library. Also, if the library is modified
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+by someone else and passed on, the recipients should know that what
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+they have is not the original version, so that the original author's
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+reputation will not be affected by problems that might be introduced
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+by others.
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+
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+Finally, software patents pose a constant threat to the existence of
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+any free program. We wish to make sure that a company cannot
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+effectively restrict the users of a free program by obtaining a
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+restrictive license from a patent holder. Therefore, we insist that
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+any patent license obtained for a version of the library must be
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+consistent with the full freedom of use specified in this license.
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+
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+Most GNU software, including some libraries, is covered by the
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+ordinary GNU General Public License. This license, the GNU Lesser
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+General Public License, applies to certain designated libraries, and
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+is quite different from the ordinary General Public License. We use
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+this license for certain libraries in order to permit linking those
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+libraries into non-free programs.
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+
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+When a program is linked with a library, whether statically or using a
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+shared library, the combination of the two is legally speaking a
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+combined work, a derivative of the original library. The ordinary
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+General Public License therefore permits such linking only if the
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+entire combination fits its criteria of freedom. The Lesser General
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+Public License permits more lax criteria for linking other code with
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+the library.
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+
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+We call this license the "Lesser" General Public License because it
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+does Less to protect the user's freedom than the ordinary General
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+Public License. It also provides other free software developers Less
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+of an advantage over competing non-free programs. These disadvantages
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+are the reason we use the ordinary General Public License for many
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+libraries. However, the Lesser license provides advantages in certain
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+special circumstances.
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+
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+For example, on rare occasions, there may be a special need to
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+encourage the widest possible use of a certain library, so that it
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+becomes a de-facto standard. To achieve this, non-free programs must
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+be allowed to use the library. A more frequent case is that a free
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+library does the same job as widely used non-free libraries. In this
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+case, there is little to gain by limiting the free library to free
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+software only, so we use the Lesser General Public License.
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+
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+In other cases, permission to use a particular library in non-free
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+programs enables a greater number of people to use a large body of
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+free software. For example, permission to use the GNU C Library in
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+non-free programs enables many more people to use the whole GNU
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+operating system, as well as its variant, the GNU/Linux operating
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+system.
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+
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+Although the Lesser General Public License is Less protective of the
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+users' freedom, it does ensure that the user of a program that is
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+linked with the Library has the freedom and the wherewithal to run
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+that program using a modified version of the Library.
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The precise terms and conditions for copying, distribution and
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-modification follow.
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+modification follow. Pay close attention to the difference between a
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+"work based on the library" and a "work that uses the library". The
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+former contains code derived from the library, whereas the latter must
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+be combined with the library in order to run.
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### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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-**0.** This License applies to any program or other work which
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-contains a notice placed by the copyright holder saying it may be
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-distributed under the terms of this General Public License. The
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-"Program", below, refers to any such program or work, and a "work
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-based on the Program" means either the Program or any derivative work
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-under copyright law: that is to say, a work containing the Program or
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-a portion of it, either verbatim or with modifications and/or
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-translated into another language. (Hereinafter, translation is
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-included without limitation in the term "modification".) Each licensee
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-is addressed as "you".
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+**0.** This License Agreement applies to any software library or other
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+program which contains a notice placed by the copyright holder or
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+other authorized party saying it may be distributed under the terms of
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+this Lesser General Public License (also called "this License"). Each
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+licensee is addressed as "you".
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+
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+A "library" means a collection of software functions and/or data
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+prepared so as to be conveniently linked with application programs
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+(which use some of those functions and data) to form executables.
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+
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+The "Library", below, refers to any such software library or work
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+which has been distributed under these terms. A "work based on the
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+Library" means either the Library or any derivative work under
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+copyright law: that is to say, a work containing the Library or a
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+portion of it, either verbatim or with modifications and/or translated
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+straightforwardly into another language. (Hereinafter, translation is
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+included without limitation in the term "modification".)
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+
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+"Source code" for a work means the preferred form of the work for
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+making modifications to it. For a library, complete source code means
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+all the source code for all modules it contains, plus any associated
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+interface definition files, plus the scripts used to control
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+compilation and installation of the library.
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Activities other than copying, distribution and modification are not
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covered by this License; they are outside its scope. The act of
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-running the Program is not restricted, and the output from the Program
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-is covered only if its contents constitute a work based on the Program
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-(independent of having been made by running the Program). Whether that
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-is true depends on what the Program does.
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-
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-**1.** You may copy and distribute verbatim copies of the Program's
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-source code as you receive it, in any medium, provided that you
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-conspicuously and appropriately publish on each copy an appropriate
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-copyright notice and disclaimer of warranty; keep intact all the
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-notices that refer to this License and to the absence of any warranty;
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-and give any other recipients of the Program a copy of this License
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-along with the Program.
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+running a program using the Library is not restricted, and output from
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+such a program is covered only if its contents constitute a work based
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+on the Library (independent of the use of the Library in a tool for
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+writing it). Whether that is true depends on what the Library does and
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+what the program that uses the Library does.
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+
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+**1.** You may copy and distribute verbatim copies of the Library's
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+complete source code as you receive it, in any medium, provided that
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+you conspicuously and appropriately publish on each copy an
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+appropriate copyright notice and disclaimer of warranty; keep intact
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+all the notices that refer to this License and to the absence of any
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+warranty; and distribute a copy of this License along with the
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+Library.
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You may charge a fee for the physical act of transferring a copy, and
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you may at your option offer warranty protection in exchange for a
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fee.
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-**2.** You may modify your copy or copies of the Program or any
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-portion of it, thus forming a work based on the Program, and copy and
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+**2.** You may modify your copy or copies of the Library or any
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+portion of it, thus forming a work based on the Library, and copy and
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distribute such modifications or work under the terms of Section 1
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above, provided that you also meet all of these conditions:
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-
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-**a)** You must cause the modified files to carry prominent notices
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-stating that you changed the files and the date of any change.
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-
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-
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-**b)** You must cause any work that you distribute or publish, that in
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-whole or in part contains or is derived from the Program or any part
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-thereof, to be licensed as a whole at no charge to all third parties
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-under the terms of this License.
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-
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-
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-**c)** If the modified program normally reads commands interactively
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-when run, you must cause it, when started running for such interactive
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-use in the most ordinary way, to print or display an announcement
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-including an appropriate copyright notice and a notice that there is
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-no warranty (or else, saying that you provide a warranty) and that
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-users may redistribute the program under these conditions, and telling
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-the user how to view a copy of this License. (Exception: if the
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-Program itself is interactive but does not normally print such an
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-announcement, your work based on the Program is not required to print
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-an announcement.)
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+- **a)** The modified work must itself be a software library.
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+- **b)** You must cause the files modified to carry prominent
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+ notices stating that you changed the files and the date of
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+ any change.
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+- **c)** You must cause the whole of the work to be licensed at no
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+ charge to all third parties under the terms of this License.
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+- **d)** If a facility in the modified Library refers to a function
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+ or a table of data to be supplied by an application program that
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+ uses the facility, other than as an argument passed when the
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+ facility is invoked, then you must make a good faith effort to
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+ ensure that, in the event an application does not supply such
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+ function or table, the facility still operates, and performs
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+ whatever part of its purpose remains meaningful.
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+
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+ (For example, a function in a library to compute square roots has
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+ a purpose that is entirely well-defined independent of
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+ the application. Therefore, Subsection 2d requires that any
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+ application-supplied function or table used by this function must
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+ be optional: if the application does not supply it, the square
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+ root function must still compute square roots.)
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These requirements apply to the modified work as a whole. If
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-identifiable sections of that work are not derived from the Program,
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+identifiable sections of that work are not derived from the Library,
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and can be reasonably considered independent and separate works in
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themselves, then this License, and its terms, do not apply to those
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sections when you distribute them as separate works. But when you
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distribute the same sections as part of a whole which is a work based
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-on the Program, the distribution of the whole must be on the terms of
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+on the Library, the distribution of the whole must be on the terms of
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this License, whose permissions for other licensees extend to the
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entire whole, and thus to each and every part regardless of who wrote
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it.
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@@ -132,102 +201,195 @@ it.
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Thus, it is not the intent of this section to claim rights or contest
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your rights to work written entirely by you; rather, the intent is to
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exercise the right to control the distribution of derivative or
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-collective works based on the Program.
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+collective works based on the Library.
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-In addition, mere aggregation of another work not based on the Program
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-with the Program (or with a work based on the Program) on a volume of
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+In addition, mere aggregation of another work not based on the Library
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+with the Library (or with a work based on the Library) on a volume of
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a storage or distribution medium does not bring the other work under
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the scope of this License.
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-**3.** You may copy and distribute the Program (or a work based on it,
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-under Section 2) in object code or executable form under the terms of
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-Sections 1 and 2 above provided that you also do one of the following:
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-
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-
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-**a)** Accompany it with the complete corresponding machine-readable
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-source code, which must be distributed under the terms of Sections 1
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-and 2 above on a medium customarily used for software interchange; or,
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-
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-**b)** Accompany it with a written offer, valid for at least three
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-years, to give any third party, for a charge no more than your cost of
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countries not thus excluded. In such case, this License incorporates
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+**13.** The Free Software Foundation may publish revised and/or new
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-generally.
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+license version number, you may choose any version ever published by
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+
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+**14.** If you wish to incorporate parts of the Library into other
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-WARRANTY FOR THE PROGRAM, 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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+**16.** 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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-PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
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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 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
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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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455
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### END OF TERMS AND CONDITIONS
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457
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-### How to Apply These Terms to Your New Programs
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+### How to Apply These Terms to Your New Libraries
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459
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-If you develop a new program, and you want it to be of the greatest
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-possible use to the public, the best way to achieve this is to make it
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-free software which everyone can redistribute and change under these
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-terms.
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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
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+of the ordinary General Public License).
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465
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-To do so, attach the following notices to the program. It is safest to
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-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
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-the "copyright" line and a pointer to where the full notice is found.
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+To apply these terms, attach the following notices to the library. It
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467
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+is safest to attach them to the start of each source file to most
|
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468
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+effectively convey the exclusion of warranty; and each file should
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469
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+have at least the "copyright" line and a pointer to where the full
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+notice is found.
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471
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- one line to give the program's name and an idea of what it does.
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- Copyright (C) yyyy name of author
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+ one line to give the library's name and an idea of what it does.
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+ Copyright (C) year name of author
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474
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- This program is free software; you can redistribute it and/or
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- modify it under the terms of the GNU General Public License
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- as published by the Free Software Foundation; either version 2
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- of the License, or (at your option) any later version.
|
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475
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+ This library is free software; you can redistribute it and/or
|
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476
|
+ modify it under the terms of the GNU Lesser General Public
|
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477
|
+ License as published by the Free Software Foundation; either
|
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478
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+ version 2.1 of the License, or (at your option) any later version.
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479
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- This program is distributed in the hope that it will be useful,
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+ This library is distributed in the hope that it will be useful,
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481
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
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|
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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|
|
- GNU General Public License for more details.
|
|
482
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
483
|
+ Lesser General Public License for more details.
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|
484
|
|
321
|
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- You should have received a copy of the GNU General Public License
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- along with this program; if not, write to the Free Software
|
323
|
|
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
485
|
+ You should have received a copy of the GNU Lesser General Public
|
|
486
|
+ License along with this library; if not, write to the Free Software
|
|
487
|
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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488
|
|
325
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489
|
Also add information on how to contact you by electronic and paper
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326
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490
|
mail.
|
327
|
491
|
|
328
|
|
-If the program is interactive, make it output a short notice like this
|
329
|
|
-when it starts in an interactive mode:
|
330
|
|
-
|
331
|
|
- Gnomovision version 69, Copyright (C) year name of author
|
332
|
|
- Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
|
333
|
|
- type `show w'. This is free software, and you are welcome
|
334
|
|
- to redistribute it under certain conditions; type `show c'
|
335
|
|
- for details.
|
336
|
|
-
|
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|
|
-The hypothetical commands \`show w' and \`show c' should show the
|
338
|
|
-appropriate parts of the General Public License. Of course, the
|
339
|
|
-commands you use may be called something other than \`show w' and
|
340
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|
-\`show c'; they could even be mouse-clicks or menu items--whatever
|
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|
|
-suits your program.
|
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|
|
-
|
343
|
492
|
You should also get your employer (if you work as a programmer) or
|
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|
|
-your school, if any, to sign a "copyright disclaimer" for the program,
|
|
493
|
+your school, if any, to sign a "copyright disclaimer" for the library,
|
345
|
494
|
if necessary. Here is a sample; alter the names:
|
346
|
495
|
|
347
|
|
- Yoyodyne, Inc., hereby disclaims all copyright
|
348
|
|
- interest in the program `Gnomovision'
|
349
|
|
- (which makes passes at compilers) written
|
350
|
|
- by James Hacker.
|
|
496
|
+ Yoyodyne, Inc., hereby disclaims all copyright interest in
|
|
497
|
+ the library `Frob' (a library for tweaking knobs) written
|
|
498
|
+ by James Random Hacker.
|
351
|
499
|
|
352
|
|
- signature of Ty Coon, 1 April 1989
|
|
500
|
+ signature of Ty Coon, 1 April 1990
|
353
|
501
|
Ty Coon, President of Vice
|
354
|
502
|
|
355
|
|
-This General Public License does not permit incorporating your program
|
356
|
|
-into proprietary programs. If your program is a subroutine library,
|
357
|
|
-you may consider it more useful to permit linking proprietary
|
358
|
|
-applications with the library. If this is what you want to do, use the
|
359
|
|
-[GNU Lesser General Public
|
360
|
|
-License](http://www.gnu.org/licenses/lgpl.html) instead of this
|
361
|
|
-License.
|
|
503
|
+That's all there is to it!
|