Apple Logic Pro 9 - Manual (Page 491)

To edit a take region’s start or end point when bordered by another take region
µ
Place the pointer over the top-left or top-right edge of the take regions, then drag when
you see the Junction pointer.
Extending a take region (dragging the start point to the left or the end point to the right)
automatically shortens the adjacent take region. Shortening a take region (dragging the
start point to the right or the end point to the left) automatically extends the adjacent
take regions. This ensures that you do not create silence between different take region
sections.
Cutting Take Folders and Take Regions
You can cut take folders and take regions, and therefore have multiple take folders or
multiple take regions on the same take lane.
For cutting activities, your chosen take folder must not be in Quick Swipe Comping mode.
For details, see
Toggling Take Folder Editing Mode .
491 Chapter 15 Editing Audio Take Recordings