“…it's nice to be able to manipulate multiple things at once.” Particularly if one thing affects another in a ripple-effect or chain reaction. It is great to b

“…it's nice to be able to manipulate multiple things at once.” Particularly if one thing affects another in a ripple-effect or chain reaction. It is great to be able to adjust at least two values at once. Keeps you from going back-and-forth adjusting in ever smaller increments to get to the settings you want.