Shortcut in I-drive

It is probably already in the manual, but I have noticed it by accident. If you are somewhere in the I-drive menu and you hold the button to the right, left or whatever side there is in the main menu, it will bring you directly to this menu. So Right for example is navigation. I think it is quit handy, for example when I am selecting a number from my ipod and I quickly want to go to navigation I just hold the I-drive button to the right.