[R] R GUI's on a Mac?

[Berton Gunter]

Folks:

A question for R users on Macs. AFAIK,  R's Tcl/TK tools allow one to build
GUI interfaces to R's functionality across all platforms. My question: How
well do the TK widget tools work on a Mac? More specifically, is there any
extra difficulty or complication in porting such applications to a Mac? Is
there any special requirement for the Mac OS or version? Any glitches that
should give one pause?

Please reply privately, as this is not of general interest to the list. Many
thanks.

-- Bert Gunter
Genentech