Apple Final Cut Pro 7 - Manual (Page 951)

Setting the Recording Duration
You can define the recording duration by setting In and Out points or positioning the
playhead.
• If both In and Out points are set in the Timeline: They define the duration of the recording.
(This is the easiest method.)
• If no In point is set: The position of the playhead defines the In point, and recording
continues to the Out point.
951 Chapter 58 Using the Voice Over Tool