Apple Final Cut Express HD: Getting Started - Manual (Page 61)

Chapter 4 Basic Editing 61
This can be useful for quickly rearranging pieces of your sequence, for deleting a
section of a clip, for applying an effect to a specific part of a clip, or for moving a piece
of a clip to the same location on another track.
Note: Linked audio clips are cut at the position of the playhead as well.
Position the playhead
where you want to
make the cut, then
press the mouse
button.
The clip is separated
into two clips at the
position of the
playhead.