<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="15" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[15]</anchor-end> 
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク型</anchor> <dfn><code>license</code></dfn> は、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク先</anchor>が<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">著作権</anchor>その他の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ライセンス</anchor>を<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">記述<title xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:">ライセンス記述</title></anchor>した<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">文書</anchor>であることを表すものです。</p><section><h1>リンク先 URL</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="16" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[16]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク先</anchor>には任意の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">URL</anchor> を指定できます。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="17" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[17]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク先</anchor>が<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">機械可読</anchor>であることは要求されていません。
従って機械的に決定できるのは<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク先</anchor>に<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ライセンス</anchor>条項があると期待することまでで、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ライセンス記述</anchor>を機械的に読むことはできません。</p><comment-p xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="18" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[18]</anchor-end> つまりこれは 「<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">GPL</anchor> ならこの <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">URL</anchor> を指定しなければならない」
のようなものでは<em xmlns="http://www.w3.org/1999/xhtml">ない</em>ということです。</comment-p></section><section><h1><code class="HTML" xml:lang="en">rel=license</code> (HTML)</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="2" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[2]</anchor-end>
<cite>Re: License metadata in HTML</cite> (<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Ian Hickson</anchor> 著, <time>2007-10-30 01:18:08 +09:00</time> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/12246">http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/12246</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="3" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[3]</anchor-end> <anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="2" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;2</anchor-internal> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ライセンス</anchor>情報の <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML</anchor> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">文書</anchor>中の記述に関する提案が数件ありましたが、
結局 <code class="HTML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">license</anchor></code> 以上のものを用意する動機に欠けるのが実態と判断されています。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="9" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[9]</anchor-end> <cite xml:lang="en">Licensing Brainstorming · Microformats Wiki</cite>
(<time>2009-09-26 17:17:56 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://microformats.org/wiki/licensing-brainstorming">http://microformats.org/wiki/licensing-brainstorming</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="12" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[12]</anchor-end> 
<cite xml:lang="en">rel=&quot;license&quot; - Microformats Wiki</cite>, <time>2023-07-26T21:35:04.000Z</time>, <time>2024-05-04T09:42:16.041Z</time> <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://microformats.org/wiki/rel-license">http://microformats.org/wiki/rel-license</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="13" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[13]</anchor-end> 
<cite xml:lang="en">rel-license XMDP profile</cite>, <time>2009-10-04T15:48:32.000Z</time>, <time>2024-05-04T09:43:35.677Z</time> <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://microformats.org/profile/rel-license">http://microformats.org/profile/rel-license</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="14" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[14]</anchor-end> 
<cite xml:lang="en">rel-license-issues - Microformats Wiki</cite>, <time>2022-10-08T16:56:50.000Z</time>, <time>2024-05-04T09:44:28.064Z</time> <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://microformats.org/wiki/rel-license-issues">http://microformats.org/wiki/rel-license-issues</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="19" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[19]</anchor-end> 
<cite xml:lang="en">Standards/license - MozillaWiki</cite>, <time>2024-05-04T08:53:15.000Z</time>, <time>2024-05-04T13:55:01.405Z</time> <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://wiki.mozilla.org/Standards/license#Markup">https://wiki.mozilla.org/Standards/license#Markup</anchor-external></p><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="11" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[11]</anchor-end> <cite xml:lang="en">RFC 7992 - HTML Format for RFCs</cite>
(<time>2016-12-17 02:51:45 +09:00</time>)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://tools.ietf.org/html/rfc7992#section-6.3.5">https://tools.ietf.org/html/rfc7992#section-6.3.5</anchor-external></figcaption><blockquote><p>The &lt;head&gt; element contains a &lt;link&gt; tag, with &quot;rel&quot; attribute of</p><p>&quot;license&quot; and &quot;href&quot; attribute pointing to the an appropriate</p><p>copyright license for the document.</p><p>&lt;link rel=&quot;license&quot;</p><p>href=&quot;https://trustee.ietf.org/trust-legal-provisions.html&quot;&gt;</p></blockquote></figure></section><section><h1><code class="XML" xml:lang="en">rel=license</code> (Atom)</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[1]</anchor-end>
<cite xml:lang="en-US">snellspace.com &amp;#187; Blog Archive &amp;#187; RFC 4946</cite> (<code>2007-07-22 14:55:30 +09:00</code> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://www.snellspace.com/wp/?p=708">http://www.snellspace.com/wp/?p=708</anchor-external></p><blockquote><p>The Atom License Extension is now Experimental RFC 4946.</p><p>What is the Atom License Extension? Glad you asked. RFC 4946 defines the way things like Creative Commons licenses can be associated with Atom feeds and entries.</p><pre class="XML example code">&lt;entry&gt;
  &lt;id&gt;tag:entries.org,2005:1&lt;/id&gt;
  &lt;title&gt;Atom Powered Robots Run Amok&lt;/title&gt;
  &lt;updated&gt;2005-06-28T12:00:00Z&lt;/updated&gt;
  &lt;link href=&quot;http://www.example.org/entries/1&quot; /&gt;
  &lt;summary&gt;Atom Powered Robots Run Amok&lt;/summary&gt;
  &lt;author&gt;&lt;name&gt;Jane Smith&lt;/name&gt;&lt;/author&gt;
  &lt;link rel=”license” type=”text/html”
    href=”http://creativecommons.org/licenses/by/2.5/” /&gt;
&lt;/entry&gt;</pre><p>Why is this an Experimental RFC? Simple, while there are folks who produce Atom feeds that contain the license link, there are very few client implementations that do anything interesting with them. The lack of implementation experience means that “Experimental” status is far more appropriate than “Proposed Standard” status. Once we get more implementations, we can look at putting this on the standards track.</p><p>Support for RFC 4946 has already been added to the Apache Abdera project in the Extensions module.</p><p>This entry was posted on Wednesday, July 18th, 2007 at 9:58 pmand is filed under Technology, Atom 1.0, Abdera, Java, standards. </p></blockquote></section><section><h1><code>rel=license</code> (HTTP)</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="10" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[10]</anchor-end> <cite xml:lang="en">RFC 5988 - Web Linking</cite>
( (<time>2012-03-22 09:19:11 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://tools.ietf.org/html/rfc5988#page-14">http://tools.ietf.org/html/rfc5988#page-14</anchor-external></p></section><section><h1>歴史</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="5" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[5]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">W3C</anchor> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML WG</anchor> によって
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML4</anchor> で <code class="HTML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">copyright</anchor></code> が標準化されました。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="6" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[6]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">マイクロフォーマット</anchor>・<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">コミュニティー</anchor>では
<code class="HTML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">license</anchor></code> が提案されました
(<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel-license</anchor> と呼ばれています)。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="7" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[7]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom</anchor> プロジェクトは <code class="XML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">license</anchor></code>
を<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">実験的RFC</anchor> である <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">RFC 4946</anchor> として標準化しました。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="8" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[8]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">WHATWG</anchor> は <anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="6" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;6</anchor-internal> や利用の実態を鑑みて
<code class="HTML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">license</anchor></code> を<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">適合</anchor>する<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">リンク型</anchor>の名前とし、
<code class="HTML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rel</anchor>=<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">copyright</anchor></code> を別名
(<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">利用者エージェント</anchor>は対応しなければならないが、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">著者</anchor>は使用してはならないもの) として定義しなおしました。</p></section><section><h1>関連</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="4" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[4]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom</anchor> には<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ライセンス</anchor>情報を<em>文章</em>で記述するための
<code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">atom:rights</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>があります。</p></section><section><h1>メモ</h1></section></body></html>