WirelessMarkup Language (WML)was designed to describe content and format for presenting data on limited-bandwidth devices such as cellular phones and pagers. WML is an application of XML, which is defined in a document-type definition. Wireless Markup Language (WML), based on XML, is a now-obsolete markup language intended for devices that implement the Wireless Application Protocol. WML stands for Wireless Markup Language (WML) which is based on HTML and HDML. The markup language defined in WAP 2. The Wireless Application Protocol works on top of standard data link protocols, such as Global System for Mobile communication, code-division multiple access,.