extensible rights markup language(A proposed standard digital rights management (DRM) markup language which enables users to specify rights and conditions associated with resources, such as digital content or Web services)
Hypertext Markup Language(An application of the Standard Generalized Markup Language that uses tags to mark elements, such as text and graphics, in a document to indicate how Web browsers should display these elements to the user and should respond to user actions)
Extensible Markup Language(A markup language for describing and exchanging structured data in a format that is independent of operating systems and applications. XML is a World Wide Web Consortium (W3C) specification and is a subset of Standard Generalized Markup Language (SGML))
Extensible Stylesheet Language(An XML vocabulary that is used to transform XML data to another form, such as HTML, by means of a style sheet that defines presentation rules)
XML Path Language(A language used to address parts of an XML document. XPath also provides basic facilities for manipulation of strings, numbers, and Boolean values)