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509 lines
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509 lines
23 KiB
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% $Id: lppl-1-3c.tex 127 2008-05-04 16:07:20Z mittelba $
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%
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% Copyright 1999 2002-2008 LaTeX3 Project
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% Everyone is allowed to distribute verbatim copies of this
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% license document, but modification of it is not allowed.
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%
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%
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% If you wish to load it as part of a ``doc'' source, you have to
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% ensure that a) % is a comment character and b) that short verb
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% characters are being turned off, i.e.,
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%
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% \DeleteShortVerb{\'} % or whatever was made a shorthand
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% \MakePercentComment
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% \input{lppl}
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% \MakePercentIgnore
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% \MakeShortVerb{\'} % turn it on again if necessary
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%
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%
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% By default the license is produced with \section* as the highest
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% heading level. If this is not appropriate for the document in which
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% it is included define the commands listed below before loading this
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% document, e.g., for inclusion as a separate chapter define:
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%
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% \providecommand{\LPPLsection}{\chapter*}
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% \providecommand{\LPPLsubsection}{\section*}
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% \providecommand{\LPPLsubsubsection}{\subsection*}
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% \providecommand{\LPPLparagraph}{\subsubsection*}
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%
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%
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% To allow cross-referencing the headings \label's have been attached
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% to them, all starting with ``LPPL:''. As by default headings without
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% numbers are produced, this will only allow page references.
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% However, you can use the titleref package to produce textual
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% references or you change the definitions of \LPPLsection, and
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% friends to generated numbered headings.
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%
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%
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% We want it to be possible that this file can be processed by
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% (pdf)LaTeX on its own, or that this file can be included in another
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% LaTeX document without any modification whatsoever.
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% Hence the little test below.
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%
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%
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\makeatletter
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\ifx\@preamblecmds\@notprerr
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% In this case the preamble has already been processed so this file
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% is loaded as part of another document; just enclose everything in
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% a group
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\let\LPPLicense\bgroup
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\let\endLPPLicense\egroup
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\else
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% In this case the preamble has not been processed yet so this file
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% is processed by itself.
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\documentclass{article}
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\let\LPPLicense\document
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\let\endLPPLicense\enddocument
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\fi
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\makeatother
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\begin{LPPLicense}
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\providecommand{\LPPLsection}{\section*}
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\providecommand{\LPPLsubsection}{\subsection*}
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\providecommand{\LPPLsubsubsection}{\subsubsection*}
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\providecommand{\LPPLparagraph}{\paragraph*}
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\providecommand*{\LPPLfile}[1]{\texttt{#1}}
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\providecommand*{\LPPLdocfile}[1]{`\LPPLfile{#1.tex}'}
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\providecommand*{\LPPL}{\textsc{lppl}}
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\LPPLsection{The \LaTeX\ Project Public License}
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\label{LPPL:LPPL}
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\emph{LPPL Version 1.3c 2008-05-04}
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\textbf{Copyright 1999, 2002--2008 \LaTeX3 Project}
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\begin{quotation}
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Everyone is allowed to distribute verbatim copies of this
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license document, but modification of it is not allowed.
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\end{quotation}
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\LPPLsubsection{Preamble}
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\label{LPPL:Preamble}
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The \LaTeX\ Project Public License (\LPPL) is the primary license
|
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under which the \LaTeX\ kernel and the base \LaTeX\ packages are
|
|
distributed.
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|
You may use this license for any work of which you hold the
|
|
copyright and which you wish to distribute. This license may be
|
|
particularly suitable if your work is \TeX-related (such as a
|
|
\LaTeX\ package), but it is written in such a way that you can use
|
|
it even if your work is unrelated to \TeX.
|
|
|
|
The section `WHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS
|
|
LICENSE', below, gives instructions, examples, and recommendations
|
|
for authors who are considering distributing their works under this
|
|
license.
|
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|
This license gives conditions under which a work may be distributed
|
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and modified, as well as conditions under which modified versions of
|
|
that work may be distributed.
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We, the \LaTeX3 Project, believe that the conditions below give you
|
|
the freedom to make and distribute modified versions of your work
|
|
that conform with whatever technical specifications you wish while
|
|
maintaining the availability, integrity, and reliability of that
|
|
work. If you do not see how to achieve your goal while meeting
|
|
these conditions, then read the document \LPPLdocfile{cfgguide} and
|
|
\LPPLdocfile{modguide} in the base \LaTeX\ distribution for suggestions.
|
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|
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|
\LPPLsubsection{Definitions}
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|
\label{LPPL:Definitions}
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|
|
|
In this license document the following terms are used:
|
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|
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\begin{description}
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\item[Work] Any work being distributed under this License.
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|
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\item[Derived Work] Any work that under any applicable law is
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derived from the Work.
|
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|
|
\item[Modification] Any procedure that produces a Derived Work under
|
|
any applicable law -- for example, the production of a file
|
|
containing an original file associated with the Work or a
|
|
significant portion of such a file, either verbatim or with
|
|
modifications and/or translated into another language.
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\item[Modify] To apply any procedure that produces a Derived Work
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under any applicable law.
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|
|
\item[Distribution] Making copies of the Work available from one
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person to another, in whole or in part. Distribution includes
|
|
(but is not limited to) making any electronic components of the
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|
Work accessible by file transfer protocols such as \textsc{ftp} or
|
|
\textsc{http} or by shared file systems such as Sun's Network File
|
|
System (\textsc{nfs}).
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|
\item[Compiled Work] A version of the Work that has been processed
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into a form where it is directly usable on a computer system.
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|
This processing may include using installation facilities provided
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|
by the Work, transformations of the Work, copying of components of
|
|
the Work, or other activities. Note that modification of any
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|
installation facilities provided by the Work constitutes
|
|
modification of the Work.
|
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|
|
\item[Current Maintainer] A person or persons nominated as such
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|
within the Work. If there is no such explicit nomination then it
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is the `Copyright Holder' under any applicable law.
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|
|
\item[Base Interpreter] A program or process that is normally needed
|
|
for running or interpreting a part or the whole of the Work.
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|
|
A Base Interpreter may depend on external components but these are
|
|
not considered part of the Base Interpreter provided that each
|
|
external component clearly identifies itself whenever it is used
|
|
interactively. Unless explicitly specified when applying the
|
|
license to the Work, the only applicable Base Interpreter is a
|
|
`\LaTeX-Format' or in the case of files belonging to the
|
|
`\LaTeX-format' a program implementing the `\TeX{} language'.
|
|
\end{description}
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\LPPLsubsection{Conditions on Distribution and Modification}
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|
\label{LPPL:Conditions}
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\begin{enumerate}
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|
\item Activities other than distribution and/or modification of the
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Work are not covered by this license; they are outside its scope.
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|
In particular, the act of running the Work is not restricted and
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|
no requirements are made concerning any offers of support for the
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|
Work.
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\item\label{LPPL:item:distribute} You may distribute a complete, unmodified
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|
copy of the Work as you received it. Distribution of only part of
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the Work is considered modification of the Work, and no right to
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|
distribute such a Derived Work may be assumed under the terms of
|
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this clause.
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\item You may distribute a Compiled Work that has been generated
|
|
from a complete, unmodified copy of the Work as distributed under
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Clause~\ref{LPPL:item:distribute} above, as long as that Compiled Work is
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|
distributed in such a way that the recipients may install the
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Compiled Work on their system exactly as it would have been
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installed if they generated a Compiled Work directly from the
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Work.
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\item\label{LPPL:item:currmaint} If you are the Current Maintainer of the
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|
Work, you may, without restriction, modify the Work, thus creating
|
|
a Derived Work. You may also distribute the Derived Work without
|
|
restriction, including Compiled Works generated from the Derived
|
|
Work. Derived Works distributed in this manner by the Current
|
|
Maintainer are considered to be updated versions of the Work.
|
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|
|
\item If you are not the Current Maintainer of the Work, you may
|
|
modify your copy of the Work, thus creating a Derived Work based
|
|
on the Work, and compile this Derived Work, thus creating a
|
|
Compiled Work based on the Derived Work.
|
|
|
|
\item\label{LPPL:item:conditions} If you are not the Current Maintainer of the
|
|
Work, you may distribute a Derived Work provided the following
|
|
conditions are met for every component of the Work unless that
|
|
component clearly states in the copyright notice that it is exempt
|
|
from that condition. Only the Current Maintainer is allowed to
|
|
add such statements of exemption to a component of the Work.
|
|
\begin{enumerate}
|
|
\item If a component of this Derived Work can be a direct
|
|
replacement for a component of the Work when that component is
|
|
used with the Base Interpreter, then, wherever this component of
|
|
the Work identifies itself to the user when used interactively
|
|
with that Base Interpreter, the replacement component of this
|
|
Derived Work clearly and unambiguously identifies itself as a
|
|
modified version of this component to the user when used
|
|
interactively with that Base Interpreter.
|
|
|
|
\item Every component of the Derived Work contains prominent
|
|
notices detailing the nature of the changes to that component,
|
|
or a prominent reference to another file that is distributed as
|
|
part of the Derived Work and that contains a complete and
|
|
accurate log of the changes.
|
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|
|
\item No information in the Derived Work implies that any persons,
|
|
including (but not limited to) the authors of the original
|
|
version of the Work, provide any support, including (but not
|
|
limited to) the reporting and handling of errors, to recipients
|
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of the Derived Work unless those persons have stated explicitly
|
|
that they do provide such support for the Derived Work.
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|
|
\item You distribute at least one of the following with the Derived Work:
|
|
\begin{enumerate}
|
|
\item A complete, unmodified copy of the Work; if your
|
|
distribution of a modified component is made by offering
|
|
access to copy the modified component from a designated place,
|
|
then offering equivalent access to copy the Work from the same
|
|
or some similar place meets this condition, even though third
|
|
parties are not compelled to copy the Work along with the
|
|
modified component;
|
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\item Information that is sufficient to obtain a complete,
|
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unmodified copy of the Work.
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\end{enumerate}
|
|
\end{enumerate}
|
|
\item If you are not the Current Maintainer of the Work, you may
|
|
distribute a Compiled Work generated from a Derived Work, as long
|
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as the Derived Work is distributed to all recipients of the
|
|
Compiled Work, and as long as the conditions of
|
|
Clause~\ref{LPPL:item:conditions}, above, are met with regard to the Derived
|
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Work.
|
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|
|
\item The conditions above are not intended to prohibit, and hence
|
|
do not apply to, the modification, by any method, of any component
|
|
so that it becomes identical to an updated version of that
|
|
component of the Work as it is distributed by the Current
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|
Maintainer under Clause~\ref{LPPL:item:currmaint}, above.
|
|
|
|
\item Distribution of the Work or any Derived Work in an alternative
|
|
format, where the Work or that Derived Work (in whole or in part)
|
|
is then produced by applying some process to that format, does not
|
|
relax or nullify any sections of this license as they pertain to
|
|
the results of applying that process.
|
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|
|
\item \null
|
|
\begin{enumerate}
|
|
\item A Derived Work may be distributed under a different license
|
|
provided that license itself honors the conditions listed in
|
|
Clause~\ref{LPPL:item:conditions} above, in regard to the Work, though it
|
|
does not have to honor the rest of the conditions in this
|
|
license.
|
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|
|
\item If a Derived Work is distributed under a different license,
|
|
that Derived Work must provide sufficient documentation as part
|
|
of itself to allow each recipient of that Derived Work to honor
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|
the restrictions in Clause~\ref{LPPL:item:conditions} above, concerning
|
|
changes from the Work.
|
|
\end{enumerate}
|
|
\item This license places no restrictions on works that are
|
|
unrelated to the Work, nor does this license place any
|
|
restrictions on aggregating such works with the Work by any means.
|
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|
|
\item Nothing in this license is intended to, or may be used to,
|
|
prevent complete compliance by all parties with all applicable
|
|
laws.
|
|
\end{enumerate}
|
|
|
|
\LPPLsubsection{No Warranty}
|
|
\label{LPPL:Warranty}
|
|
|
|
There is no warranty for the Work. Except when otherwise stated in
|
|
writing, the Copyright Holder provides the Work `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 Work is with you. Should the Work prove
|
|
defective, you assume the cost of all necessary servicing, repair,
|
|
or correction.
|
|
|
|
In no event unless required by applicable law or agreed to in
|
|
writing will The Copyright Holder, or any author named in the
|
|
components of the Work, or any other party who may distribute and/or
|
|
modify the Work as permitted above, be liable to you for damages,
|
|
including any general, special, incidental or consequential damages
|
|
arising out of any use of the Work or out of inability to use the
|
|
Work (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 Work 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.
|
|
|
|
\LPPLsubsection{Maintenance of The Work}
|
|
\label{LPPL:Maintenance}
|
|
|
|
The Work has the status `author-maintained' if the Copyright Holder
|
|
explicitly and prominently states near the primary copyright notice
|
|
in the Work that the Work can only be maintained by the Copyright
|
|
Holder or simply that it is `author-maintained'.
|
|
|
|
The Work has the status `maintained' if there is a Current
|
|
Maintainer who has indicated in the Work that they are willing to
|
|
receive error reports for the Work (for example, by supplying a
|
|
valid e-mail address). It is not required for the Current Maintainer
|
|
to acknowledge or act upon these error reports.
|
|
|
|
The Work changes from status `maintained' to `unmaintained' if there
|
|
is no Current Maintainer, or the person stated to be Current
|
|
Maintainer of the work cannot be reached through the indicated means
|
|
of communication for a period of six months, and there are no other
|
|
significant signs of active maintenance.
|
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|
|
You can become the Current Maintainer of the Work by agreement with
|
|
any existing Current Maintainer to take over this role.
|
|
|
|
If the Work is unmaintained, you can become the Current Maintainer
|
|
of the Work through the following steps:
|
|
\begin{enumerate}
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|
\item 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.
|
|
\item If this search is successful, then enquire whether the Work is
|
|
still maintained.
|
|
\begin{enumerate}
|
|
\item If it is being maintained, then ask the Current Maintainer
|
|
to update their communication data within one month.
|
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|
|
\item\label{LPPL:item:intention} 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
|
|
\texttt{comp.text.tex}.)
|
|
\end{enumerate}
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\item {}
|
|
\begin{enumerate}
|
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\item If the Current Maintainer is reachable and agrees to pass
|
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maintenance of the Work to you, then this takes effect
|
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immediately upon announcement.
|
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|
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\item\label{LPPL:item:announce} If the Current Maintainer is not
|
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reachable and the Copyright Holder agrees that maintenance of
|
|
the Work be passed to you, then this takes effect immediately
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upon announcement.
|
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\end{enumerate}
|
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\item\label{LPPL:item:change} If you make an `intention
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announcement' as described in~\ref{LPPL:item:intention} above and
|
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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
|
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name you as the (new) Current Maintainer.
|
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|
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\item If the previously unreachable Current Maintainer becomes
|
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reachable once more within three months of a change completed
|
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under the terms of~\ref{LPPL:item:announce}
|
|
or~\ref{LPPL:item:change}, then that Current Maintainer must
|
|
become or remain the Current Maintainer upon request provided they
|
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then update their communication data within one month.
|
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\end{enumerate}
|
|
A change in the Current Maintainer does not, of itself, alter the
|
|
fact that the Work is distributed under the \LPPL\ license.
|
|
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|
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~\ref{LPPL:item:intention} above.
|
|
|
|
\LPPLsubsection{Whether and How to Distribute Works under This License}
|
|
\label{LPPL:Distribute}
|
|
|
|
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.
|
|
|
|
\LPPLsubsubsection{Choosing This License or Another License}
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|
\label{LPPL:Choosing}
|
|
|
|
If for any part of your work you want or need to use
|
|
\emph{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 \LPPLdocfile{modguide} in the base \LaTeX\ distribution
|
|
explains the motivation behind the conditions of this license. It
|
|
explains, for example, why distributing \LaTeX\ under the
|
|
\textsc{gnu} General Public License (\textsc{gpl}) was considered
|
|
inappropriate. Even if your work is unrelated to \LaTeX, the
|
|
discussion in \LPPLdocfile{modguide} may still be relevant, and authors
|
|
intending to distribute their works under any license are encouraged
|
|
to read it.
|
|
|
|
\LPPLsubsubsection{A Recommendation on Modification Without Distribution}
|
|
\label{LPPL:WithoutDistribution}
|
|
|
|
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.
|
|
|
|
\LPPLsubsubsection{How to Use This License}
|
|
\label{LPPL:HowTo}
|
|
|
|
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:
|
|
\begin{verbatim}
|
|
%% 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.
|
|
\end{verbatim}
|
|
|
|
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 `\LPPLfile{pig.dtx}', `\LPPLfile{pig.ins}', and
|
|
`\LPPLfile{pig.sty}' (the last being generated from
|
|
`\LPPLfile{pig.dtx}' using `\LPPLfile{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.
|
|
|
|
\LPPLsubsubsection{Derived Works That Are Not Replacements}
|
|
\label{LPPL:NotReplacements}
|
|
|
|
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.
|
|
|
|
\LPPLsubsubsection{Important Recommendations}
|
|
\label{LPPL:Recommendations}
|
|
|
|
\LPPLparagraph{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:
|
|
\begin{verbatim}
|
|
% This work consists of all files listed in manifest.txt.
|
|
\end{verbatim}
|
|
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.
|
|
|
|
\end{LPPLicense}
|
|
\endinput
|