Or, “The mapping of HTML5 structural tags to id and class names for use with HTML4 <div>s” Drawn from the fine work of Andy Clarke (Marlarkey) and Jon Tan(gerine), esq. Further reading at More on developing naming conventions, Microformats and HTML5 and Microformats: The Fine Art of Markup: hAtom by Andy, and Preparing for HTML5 with Semantic Class Names by Jon, with reference to the current HTML5