I'd like to add a backend that renders org-mode to spiffy new HTML5.
 Presumably this would exist together with the existing XHTML backend
(maybe eventually replacing it, I guess).  I've looked around and can't
find anything describing the internals of Org-mode; are there any starting
points, or should I just crack open the code?  Anything particularly
non-obvious to keep in mind while writing the HTML5 backend?

- Pavel Panchekha