Image Mobile Web Standards Evolution Vector.svg thumb 300px right Evolution of mobile web standards Wireless Markup Language , based on XML , is a markup language intended for devices that implement the Wireless Application Protocol WAP specification, such as mobile phones . It provides navigational support, data input, hyperlinks, text and image presentation, and forms, much like HTML HyperText Markup Language . It preceded the use of other markup languages now used with WAP, such as HTML itself, and XHTML which are gaining in popularity as processing power in mobile devices increases . WML history Building on Openwave s Handheld Device Markup Language HDML , Nokia s Tagged Text Markup Language TTML and Ericsson s proprietary markup language for mobile content, the WAP Forum created the WML 1.1 standard in 1998. ref http inspiredbloggers.blogspot.com 2004 12 brief history of wap 110252445307049372.html The HCI blog A brief History of WAP ref WML 2.0 was specified in 2001, ref WAP Forum http www.wapforum.org DTD wml20.dtd Wireless Markup Language WML 2.0 Document Type Definition ref but has not been widely adopted. It was an attempt at bridging WML and XHTML Basic before the WAP 2.0 spec was finalized. ref Openwave Developer Network http developer.openwave.com dvl support documentation guides and references xhtml mp style guide chapter1.htm One quick note about WML 2.0 ref In the end, XHTML Mobile Profile became the markup language used in WAP 2.0. The newest WML version in active use is 1.3. WML markup WML documents are XML documents that validate against the WML DTD Document Type Definition ref WAP Forum http www.wapforum.org DTD wml13.dtd Wireless Markup Language WML 1.3 Document Type Definition ref . The W3C Markup Validation service http validator.w3.org can be used to validate WML documents they are validated against their declared document type . For example, the following WML page could be saved as example.wml source lang xml ?xml version 1.0 ? DOCTYPE wml P ... more details
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