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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
+<html>
+
+<head>
+<META http-equiv="Content-Type" content="text/html; charset=utf-8">
+<title>The TeX Catalogue License Definitions</title>
+</head>
+
+<body>
+<h1>The TeX Catalogue License Definitions</h1>
+
+<h2>Introduction</h2>
+<p>Here we list the licenses used by TeX-related software as
+recorded in <a href="http://mirror.ctan.org/help/Catalogue">The
+TeX Catalogue</a> (created by
+<a href="http://www.togaware.com/Graham.Williams">Graham Williams</a>
+and maintained by the <a href='http://www.ctan.org'>CTAN team</a>).
+General information about categories of licenses is available from
+<a href="http://www.gnu.org/philosophy/categories.html">the GNU project</a>.
+<p>
+The license conditions are <B>not</B> designed to restrict what may
+be submitted to CTAN. Rather, the license information should make
+life easier for redistributors of TeX and related software: in
+general, software under one of the non-free license terms listed below
+should not be included in a distribution. Most material on the
+archive may be <em>used</em> without further ado; the only exceptions
+are <a href="licenses.nocommercial.html">nocommercial</a> software,
+(whose use in a commercial environment is forbidden), and some (but not
+all) <a href="licenses.shareware.html">shareware</a>.
+<p>
+The CTAN team tries to ensure that the license information in the
+Catalogue is accurate, and maintains it with input from authors and
+others, but the sheer size of the Catalogue makes it difficult to
+maintain a watching brief on all licenses. Thus, while the team believes
+that the data presented are mostly correct, we advise careful checking
+if license information is to be used in &lsquo;legally delicate&rsquo;
+situations.
+
+<h2>The licenses</h2>
+<p>
+<b>Free software</b> satisfies the criteria contained in the <a
+href="http://www.debian.org/social_contract#guidelines">Debian Free
+Software Guidelines</a> which provides the basis of the <a
+href="http://opensource.org/osd.html">Open Source Free Software
+Guidelines</A>. This software may be freely used, modified (hence
+source must be available), and distributed (e.g. on distributions like
+TeXLive and MikTeX). It is generally copyrighted to legally
+protect it. Users are usually given an explicit license to copy,
+distribute, and/or modify the software. Authors of free software may
+invite users to make monetary donations if they wish, but can not
+oblige them to do so, or else the software becomes nonfree. Free
+software may rely on nonfree software for extra functionality, but
+provides useful functionality without that nonfree software. Further
+information on free software is available from
+<a href="http://www.gnu.org/philosophy/free-sw.html">GNU</a>.
+
+<p>While one category would be sufficient (just &lsquo;free&rsquo;) we
+identify licenses, important for (La)TeX users, that satisfy common
+notions of free software:
+<p>
+<table width="80%">
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.apache2.html">apache2</a>
+ <td style="width: 70%">
+ Apache License v2.0
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.artistic2.html">artistic2</a>
+ <td style="width: 70%">
+ Perl Artistic License (version 2)
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.bsd.html">bsd</a>
+ <td style="width: 70%">
+ BSD Style License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.fdl.html">fdl</a>
+ <td style="width: 70%">
+ GNU Free Documentation License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.gfl.html">gfl</a>
+ <td style="width: 70%">
+ GUST Font License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.gfsl.html">gfsl</a>
+ <td style="width: 70%">
+ GUST Font Source License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.gpl.html">gpl</a>
+ <td style="width: 70%">
+ GNU General Public License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.lgpl.html">lgpl</a>
+ <td style="width: 70%">
+ GNU Library General Public License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.lppl.html">lppl</a>
+ <td style="width: 70%">
+ LaTeX Project Public License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.ofl.html">ofl</a>
+ <td style="width: 70%">
+ Open Font License
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.pd.html">pd</a>
+ <td style="width: 70%">
+ Public Domain
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.other-free.html">other-free</a>
+ <td style="width: 70%">
+ Category for packages, whose license terms seem (to the CTAN team)
+ to conform to the Debian Free Software Guidelines
+ </tr>
+</table>
+
+<p><b>Nonfree software</b> is released subject to restrictions that in
+some way prohibit its free distribution. Because this
+software does <b>not</b> satisfy the <a
+href="http://www.debian.org/social_contract#guidelines">Debian Free
+Software Guidelines</a>, it will not be available for distribution by
+free TeX distributions such as TeX-live, MiKTeX and friends.
+<p>
+<table width="80%">
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.noinfo.html">noinfo</a>
+ <td style="width: 70%">
+ No information about licensing terms can be found
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.nocommercial.html">nocommercial</a>
+ <td style="width: 70%">
+ Free private use but commercial use not permitted
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.nosell.html">nosell</a>
+ <td style="width: 70%">
+ Free use but distribution for profit by arrangement only
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.nosource.html">nosource</a>
+ <td style="width: 70%">
+ Freely distributable but source code not distributed
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.shareware.html">shareware</a>
+ <td style="width: 70%">
+ Payment is requested if software is used
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.artistic.html">artistic</a>
+ <td style="width: 70%">
+ Perl Artistic License (original version, now understood not to
+ offer unconditional freedom)
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.other-nonfree.html">other-nonfree</a>
+ <td style="width: 70%">
+ Category for packages whose license terms are other than any of
+ the above, but seem (to the CTAN team) not to conform to Debian
+ Free Software guidelines.
+ </tr>
+</table>
+
+<p><b>Sets of items</b>: finally, the catalogue recognises two other
+&lsquo;license&rsquo; tags, whose purpose is to identify the status of
+&lsquo;composite&rsquo; objects on the the archive.
+
+<p>
+<table width="80%">
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.collection.html">collection</a>
+ <td style="width: 70%">
+ A collection of similar packages
+ </tr>
+ <tr>
+ <td style="width: 10%">
+ <td style="width: 20%">
+ <a href="licenses.digest.html">digest</a>
+ <td style="width: 70%">
+ A digest of contributions to a mailing list or publication
+ </tr>
+</table>
+
+<p>
+<b>Disclaimer:</b> The CTAN team tries hard to maintain the catalogue
+information, but the task is a large one &mdash; extremely challenging
+for a small volunteer team; errors (probably) and omissions
+(certainly) still exist. Any contribution, or correction, to the
+catalogue is extremely welcome &mdash; please mail the
+<a href="mailto:ctan<at>dante<dot>de">CTAN team</a> if you spot a problem,
+or can describe a package the catalogue doesn't currently mention.
+
+<hr>
+<address></address>
+<!-- hhmts start --><p>Last modified: 2009-01-23 Robin Fairbairns,
+University of Cambridge</p> <!-- hhmts end -->
+</body> </html>
+<!-- LocalWords: lppl sty CTAN gpl pd nocommercial nosell shareware TeXLive
+ -->
+<!-- LocalWords: CD teTeX MikTeX Debian nonfree lgpl
+ -->
+<!-- LocalWords: PublicDomainSoftware
+ -->