XML is a mark-up language for organizing "self describing data". XML (eXtensible Mark-up Language), XSL(eXtensible Stylesheet Language), XSLT (eXtensible Stylesheet Language for Transformation) and XSL-FO (eXtensible Stylesheet Language for Formatting Objects) are all part of XML. XML documents utilize XSL, XSLT & XSL-FO documents as a means of formatting an XML document so that it is visually appealing as well as functional. XML is reletively new on the web scene. It has been around, in theory, since 1998. More programmers and web designers are adopting this format as their new favorite due to it's flexibility and integration with other programming languages.

XML is best for medium to large sites that contain a lot of data that needs to be neatly organized, regularly updated and/or searched for content. XML also allows for versatile formatting of the "self described data" for output on wireless and palm sized browsers. Applications for XML include news letters, magazines, directories, catalogs, collections, voice applications, and user accessible databases.

 
 
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