[XeTeX] Transliteration mapping for Greek ?

[listas at tex-tipografia.com]

> First of all I think this transliteration idea was a necessary evil some
> years
> ago, but now all operating systems provide input methods that can be used
> to input text in any script and/or language.

Yeah, but usually computers come with a single keyboard
(I mean the letters printed in the "physical" keyboard).

Javier
http://www.tex-tipografia.com