Three-Point Editing

In digital video editing, three-point editing is an editing method used to insert a clip from the source media into a destination track, which is done by setting three edit points. The first two set points define the in and out points of the clip, or the in and out points in the timeline that the clip will fit into. The third point indicates either the In or Out point for the clip (if the other tow points are in the timeline), or the in and out points in the timeline (if the other two points are in the clip).
[Adapted from Pierce College – Digital Movie Making]