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RSS and Atom by Heinz Wittenbrink

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1.5 Syntax: RSS as an XML Format

Many websites identify their newsfeeds through an orange-colored button labeled "XML." For many users and also for many developers "XML" and "RSS" are synonymous. In fact, all versions of the RSS feed format and Atom are XML applications. Since XML itself is a metalanguage to define languages for the exchange of information on the Web, the feed formats are also often called "XML dialects" or "XML vocabularies". To date, RSS is the most successful XML vocabulary—except for maybe XHTML, the XML version of HTML.

Standardization and Openness of XML

The biggest advantage of XML in the field of syndication is that XML is a simple, open, and standardized format to exchange information on the Web.

RSS has spread so successfully ...

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