XML
The Extensible Markup Language (XML) does for HTML what distributed objects do for HTTP. XML is the creation of the W3C, which also controls the evolution of HTML. XML offers Web application developers another way to express Web page content. One of the principal problems with HTML is that content and presentation details are woven into the same document. XML documents don't contain presentation information; instead, a separate document, formatted with the Extensible Stylesheet Language (XSL) or a cascading style sheet (CSS) document, is referenced in order to render the document in a browser. In most situations, XML documents are not rendered only in browsers but are used as a cross-platform way to managing and communicate data between systems. ...
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