197 lines
8.6 KiB
Text
197 lines
8.6 KiB
Text
LaTeX Project Public License
|
|
|
|
LPPL Version 1.0 1999-03-01 Copyright 1999 LaTeX3 Project
|
|
|
|
Everyone is permitted to copy and distribute verbatim copies of this license
|
|
document, but modification is not allowed.
|
|
|
|
Preamble
|
|
|
|
The LaTeX Project Public License (LPPL) is the license under which the base
|
|
LaTeX distribution is distributed. As described below you may use this licence
|
|
for any software that you wish to distribute.
|
|
|
|
It may be particularly suitable if your software is TeX related (such as a
|
|
LaTeX package file) but it may be used for any software, even if it is unrelated
|
|
to TeX.
|
|
|
|
To use this license, the files of your distribution should have an explicit
|
|
copyright notice giving your name and the year, together with a reference
|
|
to this license.
|
|
|
|
A typical example would be
|
|
|
|
%% pig.sty
|
|
|
|
%% Copyright 2001 M. Y. Name
|
|
|
|
% This program can redistributed and/or modified under the terms
|
|
|
|
% of the LaTeX Project Public License Distributed from CTAN
|
|
|
|
% archives in directory macros/latex/base/lppl.txt; either
|
|
|
|
% version 1 of the License, or (at your option) any later version.
|
|
|
|
Given such a notice in the file, the conditions of this document would apply,
|
|
with:
|
|
|
|
`The Program' referring to the software `pig.sty' and `The Copyright Holder'
|
|
referring to the person `M. Y. Name'.
|
|
|
|
To see a real example, see the file legal.txt which carries the copyright
|
|
notice for the base latex distribution.
|
|
|
|
This license gives terms under which files of The Program may be distributed
|
|
and modified. Individual files may have specific further constraints on modification,
|
|
but no file should have restrictions on distribution other than those specified
|
|
below.
|
|
|
|
This is to ensure that a distributor wishing to distribute a complete unmodified
|
|
copy of The Program need only check the conditions in this file, and does
|
|
not need to check every file in The Program for extra restrictions. If you
|
|
do need to modify the distribution terms of some files, do not refer to this
|
|
license, instead distribute The Program under a different license. You may
|
|
use the parts of the text of LPPL as a model for your own license, but your
|
|
license should not directly refer to the LPPL or otherwise give the impression
|
|
that The Program is distributed under the LPPL.
|
|
|
|
The LaTeX Project Public License
|
|
|
|
================================
|
|
|
|
Terms And Conditions For Copying, Distribution And Modification
|
|
|
|
===============================================================
|
|
|
|
WARRANTY
|
|
|
|
========
|
|
|
|
There is no warranty for The Program, to the extent permitted by applicable
|
|
law. 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 required by applicable law or agreed to in writing will
|
|
The Copyright Holder, or any of the individual authors named in the source
|
|
for The Program, 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 or data being rendered inaccurate or losses sustained by you or by
|
|
third parties as a result of a failure of The Program to operate with any
|
|
other programs), even if such holder or other party has been advised of the
|
|
possibility of such damages.
|
|
|
|
DISTRIBUTION
|
|
|
|
============
|
|
|
|
Redistribution of unchanged files is allowed provided that all files that
|
|
make up the distribution of The Program are distributed. In particular this
|
|
means that The Program has to be distributed including its documentation if
|
|
documentation was part of the original distribution.
|
|
|
|
The distribution of The Program will contain a prominent file listing all
|
|
the files covered by this license.
|
|
|
|
If you receive only some of these files from someone, complain!
|
|
|
|
The distribution of changed versions of certain files included in the The
|
|
Program, and the reuse of code from The Program, are allowed under the following
|
|
restrictions:
|
|
|
|
* It is allowed only if the legal notice in the file does not expressly forbid
|
|
it. See note below, under "Conditions on individual files".
|
|
|
|
* You rename the file before you make any changes to it, unless the file explicitly
|
|
says that renaming is not required. Any such changed files must be distributed
|
|
under a license that forbids distribution of those files, and any files derived
|
|
from them, under the names used by the original files in the distribution
|
|
of The Program.
|
|
|
|
* You change any `identification string' in The Program to clearly indicate
|
|
that the file is not part of the standard system.
|
|
|
|
* If The Program includes an `error report address' so that errors may be
|
|
reported to The Copyright Holder, or other specified addresses, this address
|
|
must be changed in any modified versions of The Program, so that reports for
|
|
files not maintained by the original program maintainers are directed to the
|
|
maintainers of the changed files.
|
|
|
|
* You acknowledge the source and authorship of the original version in the
|
|
modified file.
|
|
|
|
* You also distribute the unmodified version of the file or alternatively
|
|
provide sufficient information so that the user of your modified file can
|
|
be reasonably expected to be able to obtain an original, unmodified copy of
|
|
The Program. For example, you may specify a URL to a site that you expect
|
|
will freely provide the user with a copy of The Program (either the version
|
|
on which your modification is based, or perhaps a later version).
|
|
|
|
* If The Program is intended to be used with, or is based on, LaTeX, then
|
|
files with the following file extensions which have special meaning in LaTeX
|
|
Software, have special modification rules under the license:
|
|
|
|
- Files with extension `.ins' (installation files): these files may not be
|
|
modified at all because they contain the legal notices that are placed in
|
|
the generated files.
|
|
|
|
- Files with extension `.fd' (LaTeX font definitions files): these files are
|
|
allowed to be modified without changing the name, but only to enable use of
|
|
all available fonts and to prevent attempts to access unavailable fonts. However,
|
|
modified files are not allowed to be distributed in place of original files.
|
|
|
|
- Files with extension `.cfg' (configuration files): these files can be created
|
|
or modified to enable easy configuration of the system. The documentation
|
|
in cfgguide.tex in the base LaTeX distribution describes when it makes sense
|
|
to modify or generate such files.
|
|
|
|
The above restrictions 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 in The Program.
|
|
|
|
========================================================================
|
|
|
|
NOTES
|
|
|
|
=====
|
|
|
|
We believe that these requirements give you the freedom you to make modifications
|
|
that conform with whatever technical specifications you wish, whilst maintaining
|
|
the availability, integrity and reliability of The Program. If you do not
|
|
see how to achieve your goal whilst adhering to these requirements then read
|
|
the document cfgguide.tex in the base LaTeX distribution for suggestions.
|
|
|
|
Because of the portability and exchangeability aspects of systems like LaTeX,
|
|
The LaTeX3 Project deprecates the distribution of non-standard versions of
|
|
components of LaTeX or of generally available contributed code for them but
|
|
such distributions are permitted under the above restrictions.
|
|
|
|
The document modguide.tex in the base LaTeX distribution details the reasons
|
|
for the legal requirements detailed above. Even if The Program is unrelated
|
|
to LaTeX, the argument in modguide.tex may still apply, and should be read
|
|
before a modified version of The Program is distributed.
|
|
|
|
Conditions on individual files
|
|
|
|
==============================
|
|
|
|
The individual files may bear additional conditions which supersede the general
|
|
conditions on distribution and modification contained in this file. If there
|
|
are any such files, the distribution of The Program will contain a prominent
|
|
file that lists all the exceptional files.
|
|
|
|
Typical examples of files with more restrictive modification conditions would
|
|
be files that contain the text of copyright notices.
|
|
|
|
* The conditions on individual files differ only in the extent of *modification*
|
|
that is allowed.
|
|
|
|
* The conditions on *distribution* are the same for all the files. Thus a
|
|
(re)distributor of a complete, unchanged copy of The Program need meet only
|
|
the conditions in this file; it is not necessary to check the header of every
|
|
file in the distribution to check that a distribution meets these requirements.
|