When Show Advanced Tools is selected in the Advanced preferences pane, the Drag pop-up menu is available in the Tracks area and in time-based editors (such as the Audio Track Editor and Piano Roll Editor). Using drag modes, you can control the results of moving, resizing, or deleting regions in the Tracks area.
Choose one of the following modes from the Drag pop-up menu in the Tracks area menu bar:
Overlap: Preserves the current region borders when you drag one region over another.
No Overlap: When two regions overlap, the overlapped area of the left (earlier) region is shortened.
X-Fade: When two audio regions overlap, the overlapped area is crossfaded.
Shuffle R: Aligns regions when you move, resize, or delete them, in the following ways:
Move: Moving a region to the right aligns the end point of the region with the start point of the region that follows, so there is no space (gap) between them.
Resize: When you resize the left edge of a region, the preceding regions move by the change in length. If this causes preceding regions to move past the start of the project, the resized region then overlaps the preceding ones by the corresponding amount.
Delete: The remaining regions on the track move by the length of the deleted region.
Shuffle L: Aligns regions when you move, resize, or delete them, in the following ways:
Move: Moving a region to the left aligns the start point of the region with the end point of the preceding region, so there is no space (gap) between them.
Resize: When you resize the right edge of a region, the regions that follow move by the change in length.
Delete: The remaining regions on the track move by the length of the deleted region.
For both Shuffle R and Shuffle L, when you drag one region over another, the regions switch positions.
Only one audio region at a time can be played on each track. When two audio regions on the same track overlap, only the later (right) region is heard.