key: lppl-1.3a short_name: LPPL 1.3a name: LaTeX Project Public License v1.3a category: Copyleft owner: LaTeX homepage_url: http://www.latex-project.org/lppl/lppl-1-3a.txt notes: Per SPDX.org, this license was released 1 Oct 2004 spdx_license_key: LPPL-1.3a text_urls: - http://www.latex-project.org/lppl/lppl-1-3a.txt ignorable_copyrights: - Copyright 1999 2002-04 LaTeX3 Project ignorable_holders: - LaTeX3 Project ignorable_urls: - http://www.latex-project.org/lppl.txt text: "The LaTeX Project Public License\n=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\nLPPL Version 1.3a\ \ 2004-10-01\n\nCopyright 1999 2002-04 LaTeX3 Project\n Everyone is allowed to distribute\ \ verbatim copies of this\n license document, but modification of it is not allowed.\n\n\ \nPREAMBLE\n========\nThe LaTeX Project Public License (LPPL) is the primary license under\n\ which the the LaTeX kernel and the base LaTeX packages are distributed.\n\nYou may use this\ \ license for any work of which you hold the copyright\nand which you wish to distribute.\ \ This license may be particularly\nsuitable if your work is TeX-related (such as a LaTeX\ \ package), but\nyou may use it with small modifications even if your work is unrelated\n\ to TeX.\n\nThe section `WHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS LICENSE',\nbelow, gives\ \ instructions, examples, and recommendations for authors\nwho are considering distributing\ \ their works under this license.\n\nThis license gives conditions under which a work may\ \ be distributed\nand modified, as well as conditions under which modified versions of\nthat\ \ work may be distributed.\n\nWe, the LaTeX3 Project, believe that the conditions below give\ \ you\nthe freedom to make and distribute modified versions of your work\nthat conform with\ \ whatever technical specifications you wish while\nmaintaining the availability, integrity,\ \ and reliability of\nthat work. If you do not see how to achieve your goal while\nmeeting\ \ these conditions, then read the document `cfgguide.tex'\nand `modguide.tex' in the base\ \ LaTeX distribution for suggestions.\n\n\nDEFINITIONS\n===========\n\nIn this license document\ \ the following terms are used:\n\n `Work'\n Any work being distributed under this License.\n\ \ \n `Derived Work'\n Any work that under any applicable law is derived from the Work.\n\ \n `Modification' \n Any procedure that produces a Derived Work under any applicable\n\ \ law -- for example, the production of a file containing an\n original file associated\ \ with the Work or a significant portion of\n such a file, either verbatim or with modifications\ \ and/or\n translated into another language.\n\n `Modify'\n To apply any procedure\ \ that produces a Derived Work under any\n applicable law.\n \n `Distribution'\n \ \ Making copies of the Work available from one person to another, in\n whole or in part.\ \ Distribution includes (but is not limited to)\n making any electronic components of\ \ the Work accessible by\n file transfer protocols such as FTP or HTTP or by shared file\n\ \ systems such as Sun's Network File System (NFS).\n\n `Compiled Work'\n A version\ \ of the Work that has been processed into a form where it\n is directly usable on a computer\ \ system. This processing may\n include using installation facilities provided by the\ \ Work,\n transformations of the Work, copying of components of the Work, or\n other\ \ activities. Note that modification of any installation\n facilities provided by the\ \ Work constitutes modification of the Work.\n\n `Current Maintainer'\n A person or persons\ \ nominated as such within the Work. If there is\n no such explicit nomination then it\ \ is the `Copyright Holder' under\n any applicable law.\n\n `Base Interpreter' \n \ \ A program or process that is normally needed for running or\n interpreting a part or\ \ the whole of the Work. \n A Base Interpreter may depend on external components but\ \ these\n are not considered part of the Base Interpreter provided that each\n external\ \ component clearly identifies itself whenever it is used\n interactively. Unless explicitly\ \ specified when applying the\n license to the Work, the only applicable Base Interpreter\ \ is a\n \"LaTeX-Format\".\n\n\n\nCONDITIONS ON DISTRIBUTION AND MODIFICATION\n===========================================\n\ 1. Activities other than distribution and/or modification of the Work\nare not covered by\ \ this license; they are outside its scope. In\nparticular, the act of running the Work is\ \ not restricted and no\nrequirements are made concerning any offers of support for the Work.\n\ \n2. You may distribute a complete, unmodified copy of the Work as you\nreceived it. Distribution\ \ of only part of the Work is considered\nmodification of the Work, and no right to distribute\ \ such a Derived\nWork may be assumed under the terms of this clause.\n\n3. 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If you are not the Current Maintainer of the Work, you may modify\nyour copy of the\ \ Work, thus creating a Derived Work based on the Work,\nand compile this Derived Work, thus\ \ creating a Compiled Work based on\nthe Derived Work.\n\n6. If you are not the Current Maintainer\ \ of the Work, you may\ndistribute a Derived Work provided the following conditions are met\n\ for every component of the Work unless that component clearly states\nin the copyright notice\ \ that it is exempt from that condition. Only\nthe Current Maintainer is allowed to add such\ \ statements of exemption \nto a component of the Work. \n\n a. If a component of this Derived\ \ Work can be a direct replacement\n for a component of the Work when that component is\ \ used with the\n Base Interpreter, then, wherever this component of the Work\n identifies\ \ itself to the user when used interactively with that\n Base Interpreter, the replacement\ \ component of this Derived Work\n clearly and unambiguously identifies itself as a modified\ \ version\n of this component to the user when used interactively with that\n Base\ \ Interpreter.\n \n b. Every component of the Derived Work contains prominent notices\n\ \ detailing the nature of the changes to that component, or a\n prominent reference\ \ to another file that is distributed as part\n of the Derived Work and that contains\ \ a complete and accurate log\n of the changes.\n \n c. 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Information\ \ that is sufficient to obtain a complete, unmodified\n copy of the Work.\n\n7. \ \ If you are not the Current Maintainer of the Work, you may\ndistribute a Compiled Work generated\ \ from a Derived Work, as long as\nthe Derived Work is distributed to all recipients of the\ \ Compiled\nWork, and as long as the conditions of Clause 6, above, are met with\nregard to\ \ the Derived Work.\n\n8. The conditions above are not intended to prohibit, and hence do\n\ not apply to, the modification, by any method, of any component so that it\nbecomes identical\ \ to an updated version of that component of the Work as\nit is distributed by the Current\ \ Maintainer under Clause 4, above.\n\n9. 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This license places no restrictions on works that are unrelated to\nthe\ \ Work, nor does this license place any restrictions on aggregating\nsuch works with the Work\ \ by any means.\n\n12. Nothing in this license is intended to, or may be used to, prevent\n\ complete compliance by all parties with all applicable laws.\n\n\nNO WARRANTY\n===========\n\ There is no warranty for the Work. Except when otherwise stated in\nwriting, the Copyright\ \ Holder provides the Work `as is', without\nwarranty of any kind, either expressed or implied,\ \ including, but not\nlimited to, the implied warranties of merchantability and fitness for\n\ a particular purpose. The entire risk as to the quality and performance\nof the Work is with\ \ you. Should the Work prove defective, you\nassume the cost of all necessary servicing,\ \ repair, or correction.\n\nIn no event unless required by applicable law or agreed to in\ \ writing\nwill The Copyright Holder, or any author named in the components of\nthe Work,\ \ or any other party who may distribute and/or modify the Work\nas permitted above, be liable\ \ to you for damages, including any\ngeneral, special, incidental or consequential damages\ \ arising out of\nany use of the Work or out of inability to use the Work (including,\nbut\ \ not limited to, loss of data, data being rendered inaccurate, or\nlosses sustained by anyone\ \ as a result of any failure of the Work to\noperate with any other programs), even if the\ \ Copyright Holder or said\nauthor or said other party has been advised of the possibility\ \ of such\ndamages.\n\n\nMAINTENANCE OF THE WORK\n=======================\nThe Work has the\ \ status `author-maintained' if the Copyright Holder\nexplicitly and prominently states near\ \ the primary copyright notice in\nthe Work that the Work can only be maintained by the Copyright\ \ Holder\nor simply that is `author-maintained'.\n\nThe Work has the status `maintained' if\ \ there is a Current Maintainer\nwho has indicated in the Work that they are willing to receive\ \ error\nreports for the Work (for example, by supplying a valid e-mail\naddress). It is not\ \ required for the Current Maintainer to acknowledge\nor act upon these error reports.\n\n\ The Work changes from status `maintained' to `unmaintained' if there\nis no Current Maintainer,\ \ or the person stated to be Current\nMaintainer of the work cannot be reached through the\ \ indicated means\nof communication for a period of six months, and there are no other\nsignificant\ \ signs of active maintenance.\n\nYou can become the Current Maintainer of the Work by agreement\ \ with\nany existing Current Maintainer to take over this role.\n\nIf the Work is unmaintained,\ \ you can become the Current Maintainer of\nthe Work through the following steps:\n\n 1. \ \ Make a reasonable attempt to trace the Current Maintainer (and\n the Copyright Holder,\ \ if the two differ) through the means of\n an Internet or similar search.\n\n 2. If\ \ this search is successful, then enquire whether the Work\n is still maintained.\n\n\ \ a. If it is being maintained, then ask the Current Maintainer\n to update their communication\ \ data within one month.\n \n b. If the search is unsuccessful or no action to resume\ \ active\n maintenance is taken by the Current Maintainer, then announce\n within\ \ the pertinent community your intention to take over\n maintenance. (If the Work is\ \ a LaTeX work, this could be\n done, for example, by posting to comp.text.tex.)\n\n 3a.\ \ If the Current Maintainer is reachable and agrees to pass\n maintenance of the Work\ \ to you, then this takes effect\n immediately upon announcement.\n \n b. If the\ \ Current Maintainer is not reachable and the Copyright\n Holder agrees that maintenance\ \ of the Work be passed to you,\n then this takes effect immediately upon announcement.\ \ \n \n 4. If you make an `intention announcement' as described in 2b. above\n and\ \ after three months your intention is challenged neither by\n the Current Maintainer\ \ nor by the Copyright Holder nor by other\n people, then you may arrange for the Work\ \ to be changed so as\n to name you as the (new) Current Maintainer.\n \n 5. If the\ \ previously unreachable Current Maintainer becomes\n reachable once more within three\ \ months of a change completed\n under the terms of 3b) or 4), then that Current Maintainer\ \ must\n become or remain the Current Maintainer upon request provided\n they then\ \ update their communication data within one month.\n\nA change in the Current Maintainer\ \ does not, of itself, alter the fact\nthat the Work is distributed under the LPPL license.\n\ \nIf you become the Current Maintainer of the Work, you should\nimmediately provide, within\ \ the Work, a prominent and unambiguous\nstatement of your status as Current Maintainer. \ \ You should also\nannounce your new status to the same pertinent community as\nin 2b) above.\n\ \n\nWHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS LICENSE\n======================================================\n\ This section contains important instructions, examples, and\nrecommendations for authors who\ \ are considering distributing their\nworks under this license. These authors are addressed\ \ as `you' in\nthis section.\n\nChoosing This License or Another License\n----------------------------------------\n\ If for any part of your work you want or need to use *distribution*\nconditions that differ\ \ significantly from those in this license, then\ndo not refer to this license anywhere in\ \ your work but, instead,\ndistribute your work under a different license. You may use the\ \ text\nof this license as a model for your own license, but your license\nshould not refer\ \ to the LPPL or otherwise give the impression that\nyour work is distributed under the LPPL.\n\ \nThe document `modguide.tex' in the base LaTeX distribution explains\nthe motivation behind\ \ the conditions of this license. It explains,\nfor example, why distributing LaTeX under\ \ the GNU General Public\nLicense (GPL) was considered inappropriate. Even if your work is\n\ unrelated to LaTeX, the discussion in `modguide.tex' may still be\nrelevant, and authors intending\ \ to distribute their works under any\nlicense are encouraged to read it.\n\nA Recommendation\ \ on Modification Without Distribution\n-----------------------------------------------------\n\ It is wise never to modify a component of the Work, even for your own\npersonal use, without\ \ also meeting the above conditions for\ndistributing the modified component. While you might\ \ intend that such\nmodifications will never be distributed, often this will happen by\naccident\ \ -- you may forget that you have modified that component; or\nit may not occur to you when\ \ allowing others to access the modified\nversion that you are thus distributing it and violating\ \ the conditions\nof this license in ways that could have legal implications and, worse,\n\ cause problems for the community. It is therefore usually in your\nbest interest to keep\ \ your copy of the Work identical with the public\none. Many works provide ways to control\ \ the behavior of that work\nwithout altering any of its licensed components.\n\nHow to Use\ \ This License\n-----------------------\nTo use this license, place in each of the components\ \ of your work both\nan explicit copyright notice including your name and the year the work\n\ was authored and/or last substantially modified. Include also a\nstatement that the distribution\ \ and/or modification of that\ncomponent is constrained by the conditions in this license.\n\ \nHere is an example of such a notice and statement:\n\n %% pig.dtx\n %% Copyright 2003\ \ M. Y. Name\n %\n % This work may be distributed and/or modified under the\n % conditions\ \ of the LaTeX Project Public License, either version 1.3\n % of this license or (at your\ \ option) any later version.\n % The latest version of this license is in\n % http://www.latex-project.org/lppl.txt\n\ \ % and version 1.3 or later is part of all distributions of LaTeX\n % version 2003/12/01\ \ or later.\n %\n % This work has the LPPL maintenance status \"maintained\".\n % \n %\ \ This Current Maintainer of this work is M. Y. Name.\n %\n % This work consists of the\ \ files pig.dtx and pig.ins\n % and the derived file pig.sty.\n\nGiven such a notice and\ \ statement in a file, the conditions\ngiven in this license document would apply, with the\ \ `Work' referring\nto the three files `pig.dtx', `pig.ins', and `pig.sty' (the last being\n\ generated from `pig.dtx' using `pig.ins'), the `Base Interpreter'\nreferring to any \"LaTeX-Format\"\ , and both `Copyright Holder' and\n`Current Maintainer' referring to the person `M. Y. Name'.\n\ \nIf you do not want the Maintenance section of LPPL to apply to your\nWork, change \"maintained\"\ \ above into \"author-maintained\". \nHowever, we recommend that you use \"maintained\" as\ \ the Maintenance\nsection was added in order to ensure that your Work remains useful to\n\ the community even when you can no longer maintain and support it\nyourself.\n\n\nImportant\ \ Recommendations\n-------------------------\nDefining What Constitutes the Work\n\n The\ \ LPPL requires that distributions of the Work contain all the\n files of the Work. It\ \ is therefore important that you provide a\n way for the licensee to determine which files\ \ constitute the Work.\n This could, for example, be achieved by explicitly listing all\ \ the\n files of the Work near the copyright notice of each file or by\n using a line\ \ such as:\n\n % This work consists of all files listed in manifest.txt.\n \n in that\ \ place. In the absence of an unequivocal list it might be\n impossible for the licensee\ \ to determine what is considered by you\n to comprise the Work and, in such a case, the\ \ licensee would be\n entitled to make reasonable conjectures as to which files comprise\n\ \ the Work."