In a very general sense, XML is a way of describing data contained within a document. The abbreviation stands for Extensible Markup Language. XML is a recommended markup language, or a combination of text and information about the text, for creating special-purpose markup languages to be used to describe many different kinds of data. The primary purpose is to facilitate the sharing of data across different systems, especially those systems which are connected via the Internet such as blogs.
For a more technical description of XML, check out XML.com.
Jackie Binion – Blizzard Internet Marketing, Inc.