[XeTeX] RTL paragraphs with XeTeX?

[Petr Tomasek]

Hello!

Does anyone know of a simple example of how to do RTL
paragraphs in XeTeX (no XeLaTeX or bidi package etc.!)

What does the trick? I tried to fiddle with \parfillskip,
\leftskip, \rightskipt or \hangindent/\hangafter but didn't
find any reasonable way to do this.

Or is there some new XeTeX primitive (other than \beginR / \endR)?

Again, please, don't write me about XeLaTeX, I'm not interessted in
it.

Thank You!
Petr Tomasek

-- 
Petr Tomasek <http://www.etf.cuni.cz/~tomasek>
Jabber: butrus at jabbim.cz

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
EA 355:001  DU DU DU DU
EA 355:002  TU TU TU TU
EA 355:003  NU NU NU NU NU NU NU
EA 355:004  NA NA NA NA NA
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~