Apple Final Cut Pro 7 - Manual (Page 106)

106 Chapter 5 Basic Editing
Slip a clip’s content within the current sequence In and Out points:
Select the Slip tool in the Tool palette.
1
Slip tool
The Slip tool allows you to change the contents of a clip (the portion of the clip’s media
that is shown) without changing the clip’s position or duration in the sequence. Try
using the Slip tool to see how this works.
00:00:30:00 00:00:10:00
A B C Before edit
00:00:37:00 00:00:17:00
After edit A B C
Position the pointer over Sample Clip 2 in the middle of the sequence. 2
Drag left or right within the clip. Notice that the media between the In and Out points 3
changes, but the position and length of the clip remain the same in the sequence.
As you drag, the Canvas shows you the changing clip In and Out points in a two-up
display. After the slip edit, no gaps appear in the Timeline.
You can slip the clip left or right only when the clip has In and Out points Important:
that leave extra media on the ends of the clip.