[R] margins within plotting region

[wouter.buytaert at scarlet.be]

Hi list,

there always seem to be a small margin between the actual plot and the 
axes/box around the plot. For instance, in

plot(c(0,1),c(0,1))

the 2 points do not lay on the box around the plot but slightly more to 
the center. Which parameter controls this margin and is it possible to 
eliminate it?

thanks,

Wouter