Apple Final Cut Express 4 - Manual (Page 626)

626 Part VIII Audio Mixing
To adjust a section of an overlay in the middle of four keyframes:
m Move the pointer over the section you want to adjust. When the pointer turns into the
Adjust Line Segment pointer, drag the section up or down to modify it. The rest of the
overlay before and after the four keyframes remains untouched.
To move a keyframe forward or backward in time:
m Place the pointer over the keyframe you want to modify. When the pointer becomes a
crosshair pointer, drag the keyframe forward or backward along the overlay.
As you drag, a box displays the timecode duration of the change you’re making.
Adjust Line Segment
pointer
Keyframe being moved