org.html says "
Fancy HTML5 export HTML5 introduces several new element types. By default, Org will not make use of these element types, but you can set org-html-html5-fancy to t (or set html5-fancy item in an OPTIONS line), to enable a few new block-level elements. These are created using arbitrary #+BEGIN and #+END blocks. For instance:" C-h v org-html-html5 has no auto-complete, hence guessing this variable does not exist? emacs vsn is : GNU Emacs 24.3.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.10.8) regards -- Dave Pawson XSLT XSL-FO FAQ. Docbook FAQ. http://www.dpawson.co.uk