Apple Final Cut Pro 5 - Manual (Page 532)

Chapter 12 Arranging Clips in the Timeline 197
II
Moving by Dragging
When dragging a clip to a new location, you can do either an overwrite or insert edit,
depending on your use of a keyboard modifier.
To move a clip to a new position by dragging (and do an overwrite edit):
1 In the Timeline, drag the clip to the desired location. (The pointer looks like a down arrow.)
2 Release the mouse button.
To move a clip to a new position by dragging (and do an insert edit):
1 In the Timeline, drag the clip to the desired location.
2 Press and hold down the Option key (after you’ve started dragging the clip).
The pointer looks like a right arrow.
3 Release the mouse button.
The arrow pointing down
indicates that an
overwrite edit will be
performed.
The arrow pointing right
indicates that an insert
edit will be performed.