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