Thomas A. Alspaugh
The GNU Lesser General Public License
Version 2.1, February 1999
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¶1¶1ṣ1Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
ṣ1.1Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

¶2¶2ṣ1[This is the first released version of the Lesser GPL. ¶2ṣ2It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.]

§IPreamble

§I¶1§I¶1ṣ1The licenses for most software are designed to take away your freedom to share and change it. §I¶1ṣ2By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software—to make sure the software is free for all its users.

§I¶2§I¶2ṣ1This license, the Lesser General Public License, applies to some specially designated software packages—typically libraries—of the Free Software Foundation and other authors who decide to use it. §I¶2ṣ2You can use it too, but we suggest you first think carefully about whether this license or the ordinary General Public License is the better strategy to use in any particular case, based on the explanations below.

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§I¶6§I¶6ṣ1We protect your rights with a two-step method:

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§I¶9§I¶9ṣ1Most GNU software, including some libraries, is covered by the ordinary GNU General Public License. §I¶9ṣ2This license, the GNU Lesser General Public License, applies to certain designated libraries, and is quite different from the ordinary General Public License. §I¶9ṣ3We use this license for certain libraries in order to permit linking those libraries into non-free programs.

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§I¶11§I¶11ṣ1We call this license the Lesser General Public License because it does Less to protect the user's freedom than the ordinary General Public License. §I¶11ṣ2It also provides other free software developers Less of an advantage over competing non-free programs. §I¶11ṣ3These disadvantages are the reason we use the ordinary General Public License for many libraries. §I¶11ṣ4However, the Lesser license provides advantages in certain special circumstances.

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The indentation of the original is suspect in this area; I ended list item (d) at this point.

§II.2¶2§II.2¶2ṣ1(For example, a function in a library to compute square roots has a purpose that is entirely well-defined independent of the application. §II.2¶2ṣ2Therefore, Subsection 2d requires that any application-supplied function or table used by this function must be optional: ṣ2.1if the application does not supply it, the square root function must still compute square roots.)

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10. Licenses are from Original Licensors §II.10¶1§II.10¶1ṣ1Each time you redistribute the Library (or any work based on the Library), the recipient automatically receives a license from the original licensor to copy, distribute, link with or modify the Library subject to these terms and conditions. §II.10¶1ṣ2You may not impose any further restrictions on the recipients' exercise of the rights granted herein. §II.10¶1ṣ3You are not responsible for enforcing compliance by third parties with this License.

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§II.11¶2§II.11¶2ṣ1If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply, and the section as a whole is intended to apply in other circumstances.

§II.11¶3§II.11¶3ṣ1It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; ṣ1.1this section has the sole purpose of protecting the integrity of the free software distribution system which is implemented by public license practices. §II.11¶3ṣ2Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; ṣ2.1it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice.

§II.11¶4§II.11¶4ṣ1This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License.

12. Geographical Restrictions §II.12¶1§II.12¶1ṣ1If the distribution and/or use of the Library is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Library under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. §II.12¶1ṣ2In such case, this License incorporates the limitation as if written in the body of this License.

13. Later License Versions §II.13¶1§II.13¶1ṣ1The Free Software Foundation may publish revised and/or new versions of the Lesser General Public License from time to time. §II.13¶1ṣ2Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

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§II.14¶2§II.14¶2ṣ1NO WARRANTY

15. §II.15§II.15¶1ṣ1BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. §II.15¶1ṣ2EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. §II.15¶1ṣ3THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. §II.15¶1ṣ4SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

16. §II.16§II.16¶1ṣ1IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

§II.16¶2§II.16¶2ṣ1END OF TERMS AND CONDITIONS

§IIIHow to Apply These Terms to Your New Libraries

§III¶1§III¶1ṣ1If you develop a new library, and you want it to be of the greatest possible use to the public, we recommend making it free software that everyone can redistribute and change. §III¶1ṣ2You can do so by permitting redistribution under these terms (or, alternatively, under the terms of the ordinary General Public License).

§III¶2§III¶2ṣ1To apply these terms, attach the following notices to the library. §III¶2ṣ2It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; ṣ2.1and each file should have at least the copyright line and a pointer to where the full notice is found.

<§III¶3§III¶3ṣ1one line to give the library's name and an idea of what it does.>
§III¶3ṣ2Copyright (C) <year> <name of author>

§III¶4§III¶4ṣ1This library is free software; ṣ1.1you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; ṣ1.2either version 2.1 of the License, or (at your option) any later version.

§III¶5§III¶5ṣ1This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; ṣ1.1without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. §III¶5ṣ2See the GNU Lesser General Public License for more details.

§III¶6§III¶6ṣ1You should have received a copy of the GNU Lesser General Public License along with this library; ṣ1.1if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

§III¶7§III¶7ṣ1Also add information on how to contact you by electronic and paper mail.

§III¶8§III¶8ṣ1You should also get your employer (if you work as a programmer) or your school, if any, to sign a copyright disclaimer for the library, if necessary. §III¶8ṣ2Here is a sample; ṣ2.1alter the names:

§III¶9§III¶9ṣ1Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker.

§III¶10§III¶10ṣ1signature of Ty Coon, 1 April 1990
Ty Coon, President of Vice

§III¶11§III¶11ṣ1That's all there is to it!

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