Copyright information for the texlive bundle Table of contents: 1. Copyright and License of the debian-specific adaptions 2. License of the TeX live distribution as a compilation work 3. Licenses for included libraries 4. LPPL 1. Copyright and License of the debian-specific adaptions Debian adaptions for these packages are licensed under the GNU General Public License, version 2, and are under Copyright by: Norbert Preining (2005-) Frank Küster (2006-) Julian Gilbey (2002-) All code generated for the Debian adaptions is under the GNU General Public License. -------- 2. License of the TeX live distribution as a compilation work COPYING CONDITIONS FOR TeX Live: To the best of our knowledge, all software in the TeX Live distribution is freely redistributable (libre, that is, not necessarily gratis), within the Free Software Foundation's definition and the Debian Free Software Guidelines. Where the two conflict, we generally follow the FSF. If you find any non-free files included, please contact us (references given at the end). That said, TeX Live has neither a single copyright holder nor a single license covering its entire contents, since it is a collection of many independent packages. Therefore, you may copy, modify, and/or redistribute software from TeX Live only if you comply with the requirements placed thereon by the owners of the respective packages. To most easily learn these requirements, we suggest checking the TeX Catalogue at: http://www.ctan.org/tex-archive/help/Catalogue/ (or any CTAN mirror). Of course the legal statements within the packages themselves are the final authority. In some cases, TeX Live is distributed with a snapshot of the CTAN archive, which is entirely independent of and separable from TeX Live itself. (The TeX Collection DVD is one example of this.) Please be aware that the CTAN snapshot contains many files which are *not* freely redistributable; see LICENSE.CTAN for more information. GUIDELINES FOR REDISTRIBUTION: In general, you may redistribute TeX Live, with or without modification, for profit or not, according to the usual free software tenets. Here are some general guidelines for doing this: - If you make any changes to the TeX Live distribution or any package it contains, besides complying with any licensing requirements, you must prominently mention such changes in your modified distribution so that users do not take your work for ours, and know to contact you, not us, in case of questions or problems. A new top-level file README. is a good place to describe the general situation. - Especially (but not necessarily) if changes or additions are made, we recommend a clearly different title, such as " DVD, based on TeX Live YYYY", where YYYY is the year of TeX Live you are using. This credits both our work and yours. - You absolutely may *not* place your own copyright on the entire distribution, since it is not your work. Statements such as "all rights reserved" and "may not be reproduced" are especially reprehensible, since they are antithetical to the free software principles under which TeX Live is produced. - You may use any cover or media label designs that you wish. Such packaging and marketing details are not covered by any TeX Live license. - Finally, we make the following requests (not legal requirements): a) Acknowledging that TeX Live is developed as a joint effort by all TeX user groups, and encouraging the user/reader to join their user group of choice, as listed on the web page http://tug.org/usergroups.html. b) Referencing the TeX Live home page: http://tug.org/texlive/ Such information may be placed on the label of your media, your cover, and/or in accompanying text (for instance, in the acknowledgements section of a book). Finally, although it is again not a requirement, we'd like to invite any redistributors to make a donation to the project, whether cash or in-kind, for example via https://www.tug.org/donate/dev.html. Thanks. If you have any questions or comments, *please* contact us. In general, we appreciate being given the chance to review any TeX Live-related material in advance of publication, simply to avoid mistakes. It is much better to correct text on a CD label or in a book before thousands of copies are made! We are also happy to keep anyone planning a publication informed as to our deadlines and progress. Just let us know. However, be aware that TeX Live is produced entirely by volunteers, and no dates can be guaranteed. LICENSING FOR NEW PACKAGES: Finally, we are often asked what license to use for new work. To be considered for inclusion on TeX Live, a package must use a free software license, such as the LaTeX Project Public License, the GNU General Public License, the modified BSD license, etc. (Please use an existing license instead of making up your own.) Furthermore, all sources must be available, including for documentation files. Please see http://tug.org/texlive/pkgcontrib.html for more information, and other considerations. Thanks for your interest in TeX. - Karl Berry, for the TeX Live project ------------------------------------------------------------ TeX Live mailing list: http://lists.tug.org/tex-live TeX Live home page: http://tug.org/tex-live/ The FSF's free software definition: http://www.gnu.org/philosophy/free-sw.html Debian Free Software Guidelines: http://www.debian.org/intro/free FSF commentary on existing licenses: http://www.gnu.org/licenses/license-list.html LPPL: http://latex-project.org/lppl.html or texmf-dist/doc/latex/base/lppl.txt LPPL rationale: texmf-dist/doc/latex/base/modguide.pdf ------------- 3. Licenses for included libraries libs/lua52 licensed under MIT license lua52/lua-*/doc/readme.html libs/lua53 licensed under MIT license lua53/lua-*/doc/readme.html libs/luajit licensed under MIT license luajit/LuaJIT-*/COPYRIGHT libs/poppler licensed under GPLv2 poppler/poppler-*/COPYING libs/teckit licensed under GLPL 2.1 (or Common Public License) teckit/TECkit-*/license/LICENSING.txt libs/xpdf licensed under GPLv2 xpdf/xpdf-src/COPYING ------------- 4. lppl (LaTeX Project Public License) The LaTeX Project Public License =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- LPPL Version 1.3c 2006-05-20 Copyright 1999 2002-2006 LaTeX3 Project Everyone is allowed to distribute verbatim copies of this license document, but modification of it is not allowed. PREAMBLE ======== The LaTeX Project Public License (LPPL) is the primary license under which the the LaTeX kernel and the base LaTeX packages are distributed. 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Make a reasonable attempt to trace the Current Maintainer (and the Copyright Holder, if the two differ) through the means of an Internet or similar search. 2. If this search is successful, then enquire whether the Work is still maintained. a. If it is being maintained, then ask the Current Maintainer to update their communication data within one month. b. If the search is unsuccessful or no action to resume active maintenance is taken by the Current Maintainer, then announce within the pertinent community your intention to take over maintenance. (If the Work is a LaTeX work, this could be done, for example, by posting to comp.text.tex.) 3a. If the Current Maintainer is reachable and agrees to pass maintenance of the Work to you, then this takes effect immediately upon announcement. b. If the Current Maintainer is not reachable and the Copyright Holder agrees that maintenance of the Work be passed to you, then this takes effect immediately upon announcement. 4. If you make an `intention announcement' as described in 2b. above and after three months your intention is challenged neither by the Current Maintainer nor by the Copyright Holder nor by other people, then you may arrange for the Work to be changed so as to name you as the (new) Current Maintainer. 5. If the previously unreachable Current Maintainer becomes reachable once more within three months of a change completed under the terms of 3b) or 4), then that Current Maintainer must become or remain the Current Maintainer upon request provided they then update their communication data within one month. A change in the Current Maintainer does not, of itself, alter the fact that the Work is distributed under the LPPL license. If you become the Current Maintainer of the Work, you should immediately provide, within the Work, a prominent and unambiguous statement of your status as Current Maintainer. You should also announce your new status to the same pertinent community as in 2b) above. WHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS LICENSE ====================================================== This section contains important instructions, examples, and recommendations for authors who are considering distributing their works under this license. These authors are addressed as `you' in this section. Choosing This License or Another License ---------------------------------------- If for any part of your work you want or need to use *distribution* conditions that differ significantly from those in this license, then do not refer to this license anywhere in your work but, instead, distribute your work under a different license. You may use the text of this license as a model for your own license, but your license should not refer to the LPPL or otherwise give the impression that your work is distributed under the LPPL. The document `modguide.tex' in the base LaTeX distribution explains the motivation behind the conditions of this license. It explains, for example, why distributing LaTeX under the GNU General Public License (GPL) was considered inappropriate. Even if your work is unrelated to LaTeX, the discussion in `modguide.tex' may still be relevant, and authors intending to distribute their works under any license are encouraged to read it. A Recommendation on Modification Without Distribution ----------------------------------------------------- It is wise never to modify a component of the Work, even for your own personal use, without also meeting the above conditions for distributing the modified component. While you might intend that such modifications will never be distributed, often this will happen by accident -- you may forget that you have modified that component; or it may not occur to you when allowing others to access the modified version that you are thus distributing it and violating the conditions of this license in ways that could have legal implications and, worse, cause problems for the community. It is therefore usually in your best interest to keep your copy of the Work identical with the public one. Many works provide ways to control the behavior of that work without altering any of its licensed components. How to Use This License ----------------------- To use this license, place in each of the components of your work both an explicit copyright notice including your name and the year the work was authored and/or last substantially modified. Include also a statement that the distribution and/or modification of that component is constrained by the conditions in this license. Here is an example of such a notice and statement: %% pig.dtx %% Copyright 2005 M. Y. Name % % This work may be distributed and/or modified under the % conditions of the LaTeX Project Public License, either version 1.3 % of this license or (at your option) any later version. % The latest version of this license is in % http://www.latex-project.org/lppl.txt % and version 1.3 or later is part of all distributions of LaTeX % version 2005/12/01 or later. % % This work has the LPPL maintenance status `maintained'. % % The Current Maintainer of this work is M. Y. Name. % % This work consists of the files pig.dtx and pig.ins % and the derived file pig.sty. Given such a notice and statement in a file, the conditions given in this license document would apply, with the `Work' referring to the three files `pig.dtx', `pig.ins', and `pig.sty' (the last being generated from `pig.dtx' using `pig.ins'), the `Base Interpreter' referring to any `LaTeX-Format', and both `Copyright Holder' and `Current Maintainer' referring to the person `M. Y. Name'. If you do not want the Maintenance section of LPPL to apply to your Work, change `maintained' above into `author-maintained'. However, we recommend that you use `maintained', as the Maintenance section was added in order to ensure that your Work remains useful to the community even when you can no longer maintain and support it yourself. Derived Works That Are Not Replacements --------------------------------------- Several clauses of the LPPL specify means to provide reliability and stability for the user community. They therefore concern themselves with the case that a Derived Work is intended to be used as a (compatible or incompatible) replacement of the original Work. If this is not the case (e.g., if a few lines of code are reused for a completely different task), then clauses 6b and 6d shall not apply. Important Recommendations ------------------------- Defining What Constitutes the Work The LPPL requires that distributions of the Work contain all the files of the Work. It is therefore important that you provide a way for the licensee to determine which files constitute the Work. This could, for example, be achieved by explicitly listing all the files of the Work near the copyright notice of each file or by using a line such as: % This work consists of all files listed in manifest.txt. in that place. In the absence of an unequivocal list it might be impossible for the licensee to determine what is considered by you to comprise the Work and, in such a case, the licensee would be entitled to make reasonable conjectures as to which files comprise the Work.