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Additional Information: Atom is a syndication (feed) format, defined by the [http://ietf.org IETF] in [http://www.ietf.org/rfc/rfc4287.txt RFC 4287]. [http://www.ietf.org/rfc/rfc4946.txt RFC 4946] defines an extension to Atom 1.0 for specifying license information. == Example Uses == * Feed: http://ccmixter.org/media/feed/atom/audio * Consumer: [[ccHost]] via [[Sample Pool API]] == Specifying a License == Licenses are specified using the <code>link</code> element with <code>rel="license"</code>. License information may be provided at either the feed or the entry level; in the case that both exist, the entry license overrides the feed. Note that more than one license may be specified at either level, denoting a multiple license offering. <feed xmlns="http://www.w3.org/2005/Atom"> <id>http://www.example.com/myfeed</id> <title>My Example Feed</title> <updated>2005-07-28T12:00:00Z</updated> <link href="http://www.example.com/myfeed" /> <link rel="license" type="application/rdf+xml" href="http://creativecommons.org/licenses/by-nc/2.5/rdf" /> <author><name>James</name></author> <entry> <id>tag:entries.org,2005:1</id> <title>Atom Powered Robots Run Amok</title> <updated>2005-06-28T12:00:00Z</updated> <link href="http://www.example.org/entries/1" /> <summary>Atom Powered Robots Run Amok</summary> <author><name>Jane Smith</name></author> <link rel="license" type="text/html" href="http://creativecommons.org/licenses/by/2.5/" /> </entry> </feed> In the example above the entire feed is licensed under Attribute-Non Commercial 2.5, with the one entry licensed under Attribution 2.5. == Additional Metadata == A [[WebStatement|web statement]] provides additional confidence regarding metadata assertions. [[MorePermissions|morePermissions]] allows content creators to provide a link to a URL where additional permissions, beyond those provided by the license, may be secured. Atom provides support for extending the feed using fully qualified URIs for the <code>rel</code> attribute on <code>link</code> tags. The web statement and more permissions information may be supplied one of two ways: as a <code>link</code> or as [[RDFa]] in the <code>content</code> of an entry. A metadata-interested consumer will inspect both locations for available metadata. === Using <code>link</code>s === <code><pre> <entry> <id>tag:entries.org,2005:1</id> <title>Atom Powered Robots Run Amok</title> <updated>2005-06-28T12:00:00Z</updated> <link href="http://www.example.org/entries/1" /> <summary>Atom Powered Robots Run Amok</summary> <author><name>Jane Smith</name></author> <link rel="license" type="text/html" href="http://creativecommons.org/licenses/by/2.5/" /> <link rel="http://ns.adobe.com/xap/1.0/rights/WebStatement" type="text/html" href="http://example.org/more_info" /> <link rel="http://creativecommons.org/ns#morePermissions" type="text/html" href="http://example.org/pay_me" /> </entry> </pre></code> === Using [[RDFa]] === <code><pre> <entry> <id>tag:entries.org,2005:1</id> <title>Atom Powered Robots Run Amok</title> <updated>2005-06-28T12:00:00Z</updated> <link href="http://www.example.org/entries/1" /> <summary>Atom Powered Robots Run Amok</summary> <author><name>Jane Smith</name></author> <link rel="license" type="text/html" href="http://creativecommons.org/licenses/by/2.5/" /> <link rel="http://ns.adobe.com/xap/1.0/rights/WebStatement" type="text/html" href="http://example.org/more_info" /> <link rel="http://creativecommons.org/ns#morePermissions" type="text/html" href="http://example.org/pay_me" /> <content type="xhtml" xml:lang="en"> <div xmlns="http://www.w3.org/1999/xhtml" xmlns:cc="http://creativecommons.org/ns#" xmlns:xmpRights="http://ns.adobe.com/xap/1.0/rights/"> <p>Lorem, ipsum; <a href="http://example.org/more_info" rel="xmpRights:WebStatement">more metadata</a> <a href="http://example.org/pay_me" rel="cc:morePermissions">additional rights</a> </p> </div> </content> </entry> </pre></code> === Use with Enclosures === Using RDFa you can also provide additional metadata about linked content. This is useful when deploying a podcast; your XHTML can provide rich metadata which allows clients to increase confidence in the metadata.

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