Thanks for the suggestions. Think I will have aplay with S5 - I think
I recall seeing other presentations that have been done with it and
was quite impressed. And I can /so nearly/ [1] say, like the butterfly
man in XKCD [2] "'course, there's an Emacs mode for that' ;-)
[1]
http://github.com/sigma/org-s5 ,
http://avdi.org/devblog/2010/01/20/confident-code-at-bmore-on-rails/
[2]
http://xkcd.com/378/
but sadly, not quite - I'd need to learn how to write a presn in
org-mode then how to convert it to s5. One technology too far.