Description: HTML has always been the predominant data format of the Web, and it has influenced the design of nearly every XML vocabulary ever written. So it\'s a little disappointing to see the languid adoption of XHTML, which takes HTML from its SGML heritage into the world of XML. Partly this is because XHTML 1.0 dealt only with the XML-specific mechanics of the transition, and version 1.1 addressed only modularization -- ways to combine bits and pieces of XML languages. Benefits associated with switching to XHTML 1.x are modest at best.