Платформа ЦРНП "Мирокод" для разработки проектов
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297 lines
14 KiB
297 lines
14 KiB
The LaTeX Project Public License |
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LPPL Version 1.2 1999-09-03 |
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Copyright 1999 LaTeX3 Project |
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Everyone is allowed to distribute verbatim copies of this license document, |
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but modification of it is not allowed. |
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PREAMBLE |
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======== |
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The LaTeX Project Public License (LPPL) is the license under which the base |
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LaTeX distribution is distributed. |
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You may use this license for any program that you have written and wish to |
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distribute. This license may be particularly suitable if your program is TeX-related |
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(such as a LaTeX package), but you may use it even if your program is unrelated |
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to TeX. The section `WHETHER AND HOW TO DISTRIBUTE PROGRAMS UNDER THIS LICENSE', |
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below, gives instructions, examples, and recommendations for authors who are |
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considering distributing their programs under this license. |
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In this license document, `The Program' refers to any program distributed |
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under this license. |
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This license gives conditions under which The Program may be distributed and |
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conditions under which modified versions of The Program may be distributed. |
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Individual files of The Program may bear supplementary and/or superseding |
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conditions on modification of themselves and on the distribution of modified |
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versions of themselves, but *no* file of The Program may bear supplementary |
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or superseding conditions on the distribution of an unmodified copy of the |
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file. A distributor wishing to distribute a complete, unmodified copy of The |
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Program therefore needs to check the conditions only in this license and nowhere |
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else. |
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Activities other than distribution and/or modification of The Program are |
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not covered by this license; they are outside its scope. In particular, the |
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act of running The Program is not restricted. |
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We, the LaTeX3 Project, believe that the conditions below give you the freedom |
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to make and distribute modified versions of The Program that conform with |
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whatever technical specifications you wish while maintaining the availability, |
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integrity, and reliability of The Program. If you do not see how to achieve |
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your goal while meeting these conditions, then read the document `cfgguide.tex' |
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in the base LaTeX distribution for suggestions. |
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CONDITIONS ON DISTRIBUTION AND MODIFICATION |
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=========================================== |
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You may distribute a complete, unmodified copy of The Program. Distribution |
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of only part of The Program is not allowed. |
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You may not modify in any way a file of The Program that bears a legal notice |
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forbidding modification of that file. |
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You may distribute a modified file of The Program if, and only if, the following |
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eight conditions are met: |
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1. You must meet any additional conditions borne by the file on the distribution |
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of a modified version of the file as described below in the subsection `Additional |
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Conditions on Individual Files of The Program'. |
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2. If the file is a LaTeX software file, then you must meet any applicable |
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additional conditions on the distribution of a modified version of the file |
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that are described below in the subsection `Additional Conditions on LaTeX |
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Software Files'. |
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3. You must not distribute the modified file with the filename of the original |
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file. |
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4. In the modified file, you must acknowledge the authorship and name of the |
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original file, and the name (if any) of the program which contains it. |
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5. You must change any identification string in the file to indicate clearly |
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that the modified file is not part of The Program. |
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6. You must change any addresses in the modified file for the reporting of |
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errors in the file or in The Program generally to ensure that reports for |
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files no longer maintained by the original maintainers will be directed to |
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the maintainers of the modified files. |
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7. You must distribute the modified file under a license that forbids distribution |
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both of the modified file and of any files derived from the modified file |
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with the filename of the original file. |
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8. You must do either (A) or (B): |
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(A) distribute a copy of The Program (that is, a complete, unmodified copy |
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of The Program) together with the modified file; if your distribution of the |
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modified file is made by offering access to copy the modified file from a |
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designated place, then offering equivalent access to copy The Program from |
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the same place meets this condition, even though third parties are not compelled |
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to copy The Program along with the modified file; |
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(B) provide to those who receive the modified file information that is sufficient |
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for them to obtain a copy of The Program; for example, you may provide a Uniform |
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Resource Locator (URL) for a site that you expect will provide them with a |
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copy of The Program free of charge (either the version from which your modification |
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is derived, or perhaps a later version). |
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Note that in the above, `distribution' of a file means making the file available |
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to others by any means. This includes, for instance, installing the file on |
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any machine in such a way that the file is accessible by users other than |
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yourself. `Modification' of a file means any procedure that produces a derivative |
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file under any applicable law -- that is, a file containing the original file |
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or a significant portion of it, either verbatim or with modifications and/or |
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translated into another language. |
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Changing the name of a file (other than as necessitated by the file conventions |
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of the target file systems) is considered to be a modification of the file. |
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The distribution conditions in this license do not have to be applied to files |
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that have been modified in accordance with the above conditions. Note, however, |
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that Condition 7. does apply to any such modified file. |
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The conditions above are not intended to prohibit, and hence do not apply |
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to, the updating, by any method, of a file so that it becomes identical to |
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the latest version of that file of The Program. |
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A Recommendation on Modification Without Distribution ----------------------------------------------------- |
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It is wise never to modify a file of The Program, even for your own personal |
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use, without also meeting the above eight conditions for distributing the |
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modified file. While you might intend that such modified files will never |
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be distributed, often this will happen by accident -- you may forget that |
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you have modified the file; or it may not occur to you when allowing others |
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to access the modified file that you are thus distributing it and violating |
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the conditions of this license. It is usually in your best interest to keep |
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your copy of The Program identical with the public one. Many programs provide |
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ways to control the behavior of that program without altering its licensed |
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files. |
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Additional Conditions on Individual Files of The Program -------------------------------------------------------- |
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An individual file of The Program may bear additional conditions that supplement |
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and/or supersede the conditions in this license if, and only if, such additional |
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conditions exclusively concern modification of the file or distribution of |
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a modified version of the file. The conditions on individual files of The |
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Program therefore may differ only with respect to the kind and extent of modification |
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of those files that is allowed, and with respect to the distribution of modified |
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versions of those files. |
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Additional Conditions on LaTeX Software Files |
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--------------------------------------------- |
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If a file of The Program is intended to be used with LaTeX (that is, if it |
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is a LaTeX software file), then the following additional conditions, which |
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supplement and/or supersede the conditions above, apply to the file according |
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to its filename extension: |
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- You may not modify any file with filename extension `.ins' since these are |
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installation files containing the legal notices that are placed in the files |
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they generate. |
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- You may distribute modified versions of files with filename extension `.fd' |
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(LaTeX font definition files) under the standard conditions of the LPPL as |
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described above. You may also distribute such modified LaTeX font definition |
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files with their original names provided that: |
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(1) the only changes to the original files either enable use of available |
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fonts or prevent attempts to access unavailable fonts; |
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(2) you also distribute the original, unmodified files (TeX input paths can |
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be used to control which set of LaTeX font definition files is actually used |
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by TeX). |
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- You may distribute modified versions of files with filename extension `.cfg' |
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(configuration files) with their original names. The Program may (and usually |
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will) specify the range of commands that are allowed in a particular configuration |
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file. |
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Because of portability and exchangeability issues in LaTeX software, The LaTeX3 |
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Project deprecates the distribution of modified versions of components of |
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LaTeX or of generally available contributed code for them, but such distribution |
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can meet the conditions of this license. |
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NO WARRANTY |
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=========== |
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There is no warranty for The Program. Except when otherwise stated in writing, |
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The Copyright Holder provides The Program `as is', without warranty of any |
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kind, either expressed or implied, including, but not limited to, the implied |
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warranties of merchantability and fitness for a particular purpose. The entire |
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risk as to the quality and performance of The Program is with you. Should |
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The Program prove defective, you assume the cost of all necessary servicing, |
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repair, or correction. |
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In no event unless agreed to in writing will The Copyright Holder, or any |
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author named in the files of The Program, or any other party who may distribute |
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and/or modify The Program as permitted above, be liable to you for damages, |
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including any general, special, incidental or consequential damages arising |
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out of any use of The Program or out of inability to use The Program (including, |
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but not limited to, loss of data, data being rendered inaccurate, or losses |
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sustained by anyone as a result of any failure of The Program to operate with |
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any other programs), even if The Copyright Holder or said author or said other |
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party has been advised of the possibility of such damages. |
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WHETHER AND HOW TO DISTRIBUTE PROGRAMS UNDER THIS LICENSE ========================================================= |
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This section contains important instructions, examples, and recommendations |
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for authors who are considering distributing their programs under this license. |
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These authors are addressed as `you' in this section. |
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Choosing This License or Another License |
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---------------------------------------- |
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If for any part of your program you want or need to use *distribution* conditions |
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that differ from those in this license, then do not refer to this license |
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anywhere in your program but instead distribute your program under a different |
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license. You may use the text of this license as a model for your own license, |
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but your license should not refer to the LPPL or otherwise give the impression |
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that your program is distributed under the LPPL. |
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The document `modguide.tex' in the base LaTeX distribution explains the motivation |
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behind the conditions of this license. It explains, for example, why distributing |
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LaTeX under the GNU General Public License (GPL) was considered inappropriate. |
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Even if your program is unrelated to LaTeX, the discussion in `modguide.tex' |
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may still be relevant, and authors intending to distribute their programs |
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under any license are encouraged to read it. |
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How to Use This License |
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----------------------- |
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To use this license, place in each of the files of your program both an explicit |
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copyright notice including your name and the year and also a statement that |
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the distribution and/or modification of the file is constrained by the conditions |
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in this license. |
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Here is an example of such a notice and statement: |
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%% pig.dtx |
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%% Copyright 2001 M. Y. Name |
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% |
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% This program may be distributed and/or modified under the |
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% conditions of the LaTeX Project Public License, either version 1.2 |
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% of this license or (at your option) any later version. |
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% The latest version of this license is in |
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% http://www.latex-project.org/lppl.txt |
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% and version 1.2 or later is part of all distributions of LaTeX |
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% version 1999/12/01 or later. |
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% |
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% This program consists of the files pig.dtx and pig.ins |
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Given such a notice and statement in a file, the conditions given in this |
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license document would apply, with `The Program' referring to the two files |
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`pig.dtx' and `pig.ins', and `The Copyright Holder' referring to the person |
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`M. Y. Name'. |
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Important Recommendations |
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------------------------- |
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Defining What Constitutes The Program |
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The LPPL requires that distributions of The Program contain all the files |
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of The Program. It is therefore important that you provide a way for the licensee |
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to determine which files constitute The Program. This could, for example, |
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be achieved by explicitly listing all the files of The Program near the copyright |
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notice of each file or by using a line like |
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% This program consists of all files listed in manifest.txt. |
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in that place. In the absence of an unequivocal list it might be impossible |
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for the licensee to determine what is considered by you to comprise The Program. |
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Noting Exceptional Files If The Program contains any files bearing additional |
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conditions on modification, or on distribution of modified versions, of those |
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files (other than those listed in `Additional Conditions on LaTeX Software |
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Files'), then it is recommended that The Program contain a prominent file |
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that defines the exceptional conditions, and either lists the exceptional |
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files or defines one or more categories of exceptional files. |
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Files containing the text of a license (such as this file) are often examples |
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of files bearing more restrictive conditions on modification. LaTeX configuration |
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files (with filename extension `.cfg') are examples of files bearing less |
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restrictive conditions on the distribution of a modified version of the file. |
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The additional conditions on LaTeX software given above are examples of declaring |
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a category of files bearing exceptional additional conditions.
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