A system which embraces the abilities of the mouse and keyboard without pandering to the limitations of the touchscreen. To wit, you have the ability, with a 3 button mouse + scroll wheel, to trivially select any nearby point in 3-space and label it with any one of 3 colors. More if you also allow your other hand to operate a keyboard. I dare you to attempt this with a touchscreen. I doubledare you motherfucker. Say what again.