When invoking dev.new() on my Mac OS X 10.4.11, I get an X11 window  
instead of quartz which I feel more desirable.  So I'd like to set  
the default device to quartz. However I'm confused because of the  
following:

 > Sys.getenv("R_DEFAULT_DEVICE")
R_DEFAULT_DEVICE
         "quartz"

 > getOption("device")
[1] "X11"

What's going on?

Also is file Renviron under /Library/Frameworks/R.framework/Resources/ 
etc/ppc/ the one I should modify if I want to change some environment  
variables? But I don't see R_DEFAULT_DEVICE there.

TIA,
Gang
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