XML

From TechWriter Wiki

XML (eXtensible Markup Language) is effectively a simplified version of SGML, designed for the specific purpose of describing Web documents. It was developed because the W3C members decided that SGML itself was too complicated, too flexible and too feature-rich to be processed and displayed effectively by Web browsers.

As with SGML, XML makes use of a DTD to define the permissible content of a document. Because content within an XML document is tagged according to the type of content (versus HTML where the content is tagged according to the way the content should be displayed) XML lends itself very well to machine processing and is therefore often used as an interface format.

XML was 'invented' in 1996.

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