ARIA roles in WAI-ARIA Graphics Module working draft

Hi Fred,

my developers bother me with the question if things like

<g role="button" ....>

(and other ARIA roles) are allowed according to  http://www.w3.org/TR/graphics-aria-1.0/ or just the roles mentioned
there explicitly<http://www.w3.org/TR/graphics-aria-1.0/#role_definitions> or other<http://www.w3.org/TR/graphics-aria-1.0/#role_other>.

Can you please clarify? I cannot find a respective section in the document so far that is explicit about that.

Background is that rumors are that Adobe already announced SVG as Flash "replacement" and if so, people will start creating "richer" UI's using SVG also for widgets (which they shouldn't but they will, I fear).

Best Regards
Stefan