[R] plot and keep R session as active window

[Naresh Gurbuxani]

When I plot a graph 

plot(norm(10))

R plots the graph and makes the graph window the active window.  It is straightforward to type Cmd-TAB and go back to R session.  

Is it possible to change default settings so that R session window remains the active window?

I am on a Mac, running R from EMACS + ESS.  

Thanks,
Naresh