Hi, I have some problems using the par function: I want to split the screen into 2 rows and 4 col and I type " par(mfrow=c(2, 4)) " but when I do that, instead of setting a graphical parameter, it creates a white Quarz. I'm currently using the R base version for Mac Os, 3.0.3 . Could you give me an help? Thank you very much, Emanuele