| | |
| | | GNU LIBRARY GENERAL PUBLIC LICENSE
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| | | Version 2, June 1991
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| | | GNU LESSER GENERAL PUBLIC LICENSE
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| | | Version 2.1, February 1999
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| | |
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| | | Copyright (C) 1991 Free Software Foundation, Inc.
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| | | 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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| | | 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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| | |
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| | | [This is the first released version of the library GPL. It is
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| | | numbered 2 because it goes with version 2 of the ordinary GPL.]
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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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| | |
| | | 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 Library General Public License, applies to some
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| | | specially designated Free Software Foundation software, and to any
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| | | other libraries whose authors decide to use it. You can use it for
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| | | your libraries, too.
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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 below.
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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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| | | this service if you wish), that you receive source code or can get it
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| | | in new free programs; and that you know you can do these things.
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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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| | | it in new free programs; and that you are informed that you can do
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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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| | | distributors to deny you these rights or to ask you to surrender these
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| | | Our method of protecting your rights has two steps: (1) copyright
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| | | the library, and (2) offer you this license which gives you legal
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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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| | | Also, for each distributor's protection, we want to make certain
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| | | that everyone understands that there is no warranty for this free
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| | | library. If the library is modified by someone else and passed on, we
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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 companies distributing free
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| | | introduced by others.
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| | | Most GNU software, including some libraries, is covered by the ordinary
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| | | GNU General Public License, which was designed for utility programs. This
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| | | license, the GNU Library General Public License, applies to certain
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| | | designated libraries. This license is quite different from the ordinary
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| | | one; be sure to read it in full, and don't assume that anything in it is
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| | | the same as in the ordinary license.
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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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| | | consistent with the full freedom of use specified in this license.
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| | | The reason we have a separate public license for some libraries is that
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| | | they blur the distinction we usually make between modifying or adding to a
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| | | program and simply using it. Linking a program with a library, without
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| | | analogous to running a utility program or application program. However, in
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| | | a textual and legal sense, the linked executable is a combined work, a
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| | | derivative of the original library, and the ordinary General Public License
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| | | treats it as such.
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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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| | | Because of this blurred distinction, using the ordinary General
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| | | Public License for libraries did not effectively promote software
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| | | sharing, because most developers did not use the libraries. We
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| | | concluded that weaker conditions might promote sharing better.
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| | | When a program is linked with a library, whether statically or using
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| | | a 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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| | | However, unrestricted linking of non-free programs would deprive the
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| | | users of those programs of all benefit from the free status of the
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| | | libraries themselves. This Library General Public License is intended to
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| | | permit developers of non-free programs to use free libraries, while
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| | | preserving your freedom as a user of such programs to change the free
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| | | libraries that are incorporated in them. (We have not seen how to achieve
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| | | this as regards changes in header files, but we have achieved it as regards
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| | | changes in the actual functions of the Library.) The hope is that this
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| | | will lead to faster development of free libraries.
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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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| | | 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 becomes
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| | | a de-facto standard. To achieve this, non-free programs must be
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| | | 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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| | | 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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| | | 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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| | | works together with the library.
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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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| | | Note that it is possible for a library to be covered by the ordinary
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| | | General Public License rather than by this special one.
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| | | .
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| | | GNU LIBRARY GENERAL PUBLIC LICENSE
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| | | GNU LESSER GENERAL PUBLIC LICENSE
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| | | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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| | | 0. This License Agreement applies to any software library which
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| | | contains a notice placed by the copyright holder or other authorized
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| | | 11. If, as a consequence of a court judgment or allegation of patent
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| | | 13. The Free Software Foundation may publish revised and/or new
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| | | versions of the Library General Public License from time to time.
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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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| | | END OF TERMS AND CONDITIONS
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| | | 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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| | | <one line to give the library's name and a brief idea of what it does.>
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| | | Copyright (C) <year> <name of author>
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| | | This library is free software; you can redistribute it and/or
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| | | modify it under the terms of the GNU Lesser General Public
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| | | License as published by the Free Software Foundation; either
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| | | version 2.1 of the License, or (at your option) any later version.
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| | | This library is distributed in the hope that it will be useful,
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| | | but 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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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| | | necessary. Here is a sample; alter the names:
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| | | Yoyodyne, Inc., hereby disclaims all copyright interest in the
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| | | library `Frob' (a library for tweaking knobs) written by James Random Hacker.
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| | |
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| | | <signature of Ty Coon>, 1 April 1990
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| | | Ty Coon, President of Vice
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| | |
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| | | That's all there is to it!
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