[O] Org equivalent to \chapter*

[Alan L Tyree]

I'm sure this has been asked before, but I can't seem to find it. Is 
there an org markup that produces a starred latex heading?

In a book, for example, I want the Preface to be at chapter level, but 
not included in the numbering. Same for HTML export, of course.

Thanks for any pointers,
Alan

--
Alan L Tyree                    http://www2.austlii.edu.au/~alan
Tel:  04 2748 6206              sip:typh...@iptel.org