Apple Final Cut Pro 7 - Manual (Page 543)

3 In the Canvas or Timeline, move the playhead to the location in your sequence where
you want the clip to start (the sequence In point).
Move the playhead to the
location in the sequence where
you want the clip to start.
4 Now, if you do an overwrite edit, you’ll see that the duration of your clip, defined by the
In and Out points in the Viewer, has been edited into the sequence.
The new clip starts where
the playhead was.
As you can see, defining only three points—the clip In and Out points in the Viewer and
the sequence In point in the Timeline—gives you total control of the edit that’s performed.
Example: Editing a Clip into a Gap in Your Sequence
You can also do the reverse of the previous editing example. For example: You have a
gap in your edited sequence and you want to fill it with a new clip. You know where you
want the source clip to start, and you don’t particularly care where it ends. You can specify
an In point in the Viewer, and specify In and Out points in the Timeline to coincide with
the gap.
To edit a clip into a gap in your sequence
1 Double-click a clip to open it in the Viewer. (This is your source clip.)
543 Chapter 36 Three-Point Editing