XML

[Sarah]

Stands for Extensible Markup Language. (Yes, technically it should be EML). XML is used to define documents with a standard format that can be read by any XML-compatible application. The language can be used with HTML pages, but XML itself is not a markup language. Instead, it is a metalanguage that can be used to create markup languages for specific applications. For example, it can describe items that may be accessed when a Web page loads. Basically, XML allows you to create a database of information without having an actual database. While it is commonly used in Web applications, many other programs can use XML documents as well.

[Couch Potatoe]

A metalanguage which allows users to define their own customized markup languages, especially in order to display documents on the Internet.