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Copyright information for the texlive bundle

Table of contents:

1. Copyright and License of the debian-specific adaptions
2. License of the TeX live distribution as a compilation work
3. Licenses for included libraries
4. LPPL


1. Copyright and License of the debian-specific adaptions

Debian adaptions for these packages are licensed under the GNU General
Public License, version 2, and are under Copyright by:

   Norbert Preining <preining@logic.at> (2005-)
   Frank Küster <frank@kuesterei.ch> (2006-)
   Julian Gilbey <jdg@debian.org> (2002-)

All code generated for the Debian adaptions is under the GNU General
Public License.

--------

2. License of the TeX live distribution as a compilation work


COPYING CONDITIONS FOR TeX Live:

To the best of our knowledge, all software in the TeX Live distribution
is freely redistributable (libre, that is, not necessarily gratis),
within the Free Software Foundation's definition and the Debian Free
Software Guidelines.  Where the two conflict, we generally follow the
FSF.  If you find any non-free files included, please contact us
(references given at the end).

That said, TeX Live has neither a single copyright holder nor a single
license covering its entire contents, since it is a collection of many
independent packages.  Therefore, you may copy, modify, and/or
redistribute software from TeX Live only if you comply with the
requirements placed thereon by the owners of the respective packages.

To most easily learn these requirements, we suggest checking the TeX
Catalogue at: http://www.ctan.org/tex-archive/help/Catalogue/ (or any
CTAN mirror).  Of course the legal statements within the packages
themselves are the final authority.

In some cases, TeX Live is distributed with a snapshot of the CTAN
archive, which is entirely independent of and separable from TeX Live
itself.  (The TeX Collection DVD is one example of this.)  Please be
aware that the CTAN snapshot contains many files which are *not* freely
redistributable; see LICENSE.CTAN for more information.


GUIDELINES FOR REDISTRIBUTION:

In general, you may redistribute TeX Live, with or without modification,
for profit or not, according to the usual free software tenets.  Here
are some general guidelines for doing this:

- If you make any changes to the TeX Live distribution or any
package it contains, besides complying with any licensing requirements,
you must prominently mention such changes in your modified distribution
so that users do not take your work for ours, and know to contact you,
not us, in case of questions or problems.  A new top-level file
README.<yourwork> is a good place to describe the general situation.

- Especially (but not necessarily) if changes or additions are made, we
recommend a clearly different title, such as "<your work> DVD, based on
TeX Live YYYY", where YYYY is the year of TeX Live you are using.  This
credits both our work and yours.

- You absolutely may *not* place your own copyright on the entire
distribution, since it is not your work.  Statements such as "all rights
reserved" and "may not be reproduced" are especially reprehensible,
since they are antithetical to the free software principles under which
TeX Live is produced.

- You may use any cover or media label designs that you wish.  Such
packaging and marketing details are not covered by any TeX Live license.

- Finally, we make the following requests (not legal requirements):

a) Acknowledging that TeX Live is developed as a joint effort by all TeX
   user groups, and encouraging the user/reader to join their user group
   of choice, as listed on the web page http://tug.org/usergroups.html.

b) Referencing the TeX Live home page: http://tug.org/texlive/

Such information may be placed on the label of your media, your cover,
and/or in accompanying text (for instance, in the acknowledgements
section of a book).

Finally, although it is again not a requirement, we'd like to invite any
redistributors to make a donation to the project, whether cash or
in-kind, for example via https://www.tug.org/donate/dev.html.  Thanks.


If you have any questions or comments, *please* contact us.  In general,
we appreciate being given the chance to review any TeX Live-related
material in advance of publication, simply to avoid mistakes.  It is
much better to correct text on a CD label or in a book before thousands
of copies are made!

We are also happy to keep anyone planning a publication informed as to
our deadlines and progress.  Just let us know.  However, be aware that
TeX Live is produced entirely by volunteers, and no dates can be
guaranteed.


LICENSING FOR NEW PACKAGES:

Finally, we are often asked what license to use for new work.  To be
considered for inclusion on TeX Live, a package must use a free software
license, such as the LaTeX Project Public License, the GNU General
Public License, the modified BSD license, etc.  (Please use an existing
license instead of making up your own.)  Furthermore, all sources must
be available, including for documentation files.  Please see
http://tug.org/texlive/pkgcontrib.html for more information, and other
considerations.

Thanks for your interest in TeX.

- Karl Berry, for the TeX Live project

------------------------------------------------------------
TeX Live mailing list: http://lists.tug.org/tex-live
TeX Live home page:    http://tug.org/tex-live/

The FSF's free software definition: http://www.gnu.org/philosophy/free-sw.html
Debian Free Software Guidelines:    http://www.debian.org/intro/free
FSF commentary on existing licenses:
  http://www.gnu.org/licenses/license-list.html

LPPL: http://latex-project.org/lppl.html or texmf-dist/doc/latex/base/lppl.txt
LPPL rationale: texmf-dist/doc/latex/base/modguide.pdf

-------------

3. Licenses for included libraries

libs/cairo
	licensed under LGPL-2.1
	cairo/cairo-*/COPYING
	cairo/cairo-*/COPYING-LGPL-2.1

libs/freetyp
	licensed under GPLv2 (or FreeType License)
	freetype2/freetype-*/docs/LICENSE.TXT

libs/gd
	licensed under its own license, see
	gd/libgd-*/COPYING
	~~~~~~~
	Permission has been granted to copy, distribute and modify gd in
	any context without fee, including a commercial application,
	provided that this notice is present in user-accessible supporting
	documentation.
	~~~~~~~

libs/libpng
	licensed under the libpng license, see
	libpng/libpng-*/LICENSE
	~~~~~~
	Permission is hereby granted to use, copy, modify, and distribute this
	source code, or portions hereof, for any purpose, without fee, subject
	to the following restrictions:

	1. The origin of this source code must not be misrepresented.

	2. Altered versions must be plainly marked as such and must not
	   be misrepresented as being the original source.

	3. This Copyright notice may not be removed or altered from any
	   source or altered source distribution.

	The Contributing Authors and Group 42, Inc. specifically permit, without
	fee, and encourage the use of this source code as a component to
	supporting the PNG file format in commercial products.  If you use this
	source code in a product, acknowledgment is not required but would be
	appreciated.
	~~~~~~

libs/lua52
	licensed under MIT license
	lua52/lua-*/doc/readme.html

libs/luajit
	licensed under MIT license
	luajit/LuaJIT-*/COPYRIGHT

libs/poppler
	licensed under GPLv2
	poppler/poppler-*/COPYING

libs/teckit
	licensed under GLPL 2.1 (or Common Public License)
	teckit/TECkit-*/license/LICENSING.txt

-------------

4. lppl (LaTeX Project Public License)

The LaTeX Project Public License
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

LPPL Version 1.3c  2006-05-20

Copyright 1999 2002-2006 LaTeX3 Project
    Everyone is allowed to distribute verbatim copies of this
    license document, but modification of it is not allowed.


PREAMBLE
========

The LaTeX Project Public License (LPPL) is the primary license under
which the the LaTeX kernel and the base LaTeX packages are distributed.

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.

This license gives conditions under which a work may be distributed
and modified, as well as conditions under which modified versions of
that work may be distributed.

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 `cfgguide.tex'
and `modguide.tex' in the base LaTeX distribution for suggestions.


DEFINITIONS
===========

In this license document the following terms are used:

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CONDITIONS ON DISTRIBUTION AND MODIFICATION
===========================================

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NO WARRANTY
===========

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MAINTENANCE OF THE WORK
=======================

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If the Work is unmaintained, you can become the Current Maintainer of
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 1.  Make a reasonable attempt to trace the Current Maintainer (and
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  a. If it is being maintained, then ask the Current Maintainer
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 3a. If the Current Maintainer is reachable and agrees to pass
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  b. If the Current Maintainer is not reachable and the Copyright
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     then this takes effect immediately upon announcement.  
    
 4.  If you make an `intention announcement' as described in 2b. above
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 5.  If the previously unreachable Current Maintainer becomes
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A change in the Current Maintainer does not, of itself, alter the fact
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in 2b) above.


WHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS LICENSE
======================================================

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.

Choosing This License or Another License
----------------------------------------

If for any part of your work you want or need to use *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
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The document `modguide.tex' in the base LaTeX distribution explains
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A Recommendation on Modification Without Distribution
-----------------------------------------------------

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
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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.

How to Use This License
-----------------------

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:

  %% 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.

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 `pig.dtx', `pig.ins', and `pig.sty' (the last being
generated from `pig.dtx' using `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.

Derived Works That Are Not Replacements
---------------------------------------

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.


Important Recommendations
-------------------------

 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:

    % This work 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 Work and, in such a case, the licensee would be
   entitled to make reasonable conjectures as to which files comprise
   the Work.