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RSS FAQs - Atom Syndiation Format RFC4287 Reference Document

By: M. Nottingham, Ed. & R. Sayre, Ed.

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1.  Introduction

   Atom is an XML-based document format that describes lists of related
   information known as "feeds".  Feeds are composed of a number of
   items, known as "entries", each with an extensible set of attached
   metadata.  For example, each entry has a title.

   The primary use case that Atom addresses is the syndication of Web
   content such as weblogs and news headlines to Web sites as well as
   directly to user agents.

1.1.  Examples

   A brief, single-entry Atom Feed Document:

   <?xml version="1.0" encoding="utf-8"?>
   <feed xmlns="http://www.w3.org/2005/Atom">

     <title>Example Feed</title>
     <link href="http://example.org/"/>
     <updated>2003-12-13T18:30:02Z</updated>
     <author>
       <name>John Doe</name>
     </author>
     <id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id>

     <entry>
       <title>Atom-Powered Robots Run Amok</title>
       <link href="http://example.org/2003/12/13/atom03"/>
       <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id>
       <updated>2003-12-13T18:30:02Z</updated>
       <summary>Some text.</summary>
     </entry>

   </feed>

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   A more extensive, single-entry Atom Feed Document:

   <?xml version="1.0" encoding="utf-8"?>
   <feed xmlns="http://www.w3.org/2005/Atom">
     <title type="text">dive into mark</title>
     <subtitle type="html">
       A &lt;em&gt;lot&lt;/em&gt; of effort
       went into making this effortless
     </subtitle>
     <updated>2005-07-31T12:29:29Z</updated>
     <id>tag:example.org,2003:3</id>
     <link rel="alternate" type="text/html"
      hreflang="en" href="http://example.org/"/>
     <link rel="self" type="application/atom+xml"
      href="http://example.org/feed.atom"/>
     <rights>Copyright (c) 2003, Mark Pilgrim</rights>
     <generator uri="http://www.example.com/" version="1.0">
       Example Toolkit
     </generator>
     <entry>
       <title>Atom draft-07 snapshot</title>
       <link rel="alternate" type="text/html"
        href="http://example.org/2005/04/02/atom"/>
       <link rel="enclosure" type="audio/mpeg" length="1337"
        href="http://example.org/audio/ph34r_my_podcast.mp3"/>
       <id>tag:example.org,2003:3.2397</id>
       <updated>2005-07-31T12:29:29Z</updated>
       <published>2003-12-13T08:29:29-04:00</published>
       <author>
         <name>Mark Pilgrim</name>
         <uri>http://example.org/</uri>
         <email>f8dy@example.com</email>
       </author>
       <contributor>
         <name>Sam Ruby</name>
       </contributor>
       <contributor>
         <name>Joe Gregorio</name>
       </contributor>
       <content type="xhtml" xml:lang="en"
        xml:base="http://diveintomark.org/">
         <div xmlns="http://www.w3.org/1999/xhtml">
           <p><i>[Update: The Atom draft is finished.]</i></p>
         </div>
       </content>
     </entry>
   </feed>

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