When setting In and Out points on master clips, sub-clips, or sequences, quick keys can be very handy. To set an In and Out point press Option and X, or simply select I for an In point by itself or an O for an Out point by itself. If you want to clear an In point press Option and I, and if you want to clear an Out point select Option and O. When working in a sequence you can jump to the next In point by pressing Shift and I, and the next Out point by pressing Shift and O.