R on XEmacs or emacs?

In want to know if any body had used ESS with R in XEmacs instead of
Emacs?
What is the difference?
How can I configure ESS to work on XEmacs with R?

Thank you very much for your help

Kenneth Cabrera
Universidad Nacional de Colombia
Facultad de Ciencias
ICNE (Insituto de Ciencias Naturales y Ecolog?a)
Medell?n, Antioquia
Colombia, S.A.

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