Apple Logic Pro 9 - Manual (Page 216)

All other events on these two channels are selected.
Selecting Regions or Events with an Equal Subposition
You can select all regions and events with a certain relative position, such as all snare
drums on the off-beat. Select a region or event at the desired relative position, and choose
Edit > Select Equal Subpositions (or use the corresponding key command, default
assignment: Shift-P). All regions or events with the same relative position are selected.
Accelerating Edit Operations with Selection Commands
There are many different ways to make selections, based on different criteria. These can
be used to speed up many editing operations, in conjunction with key commands. Here
are a few examples:
If you want to delete all similar regions, events, or objects, make your selection and use
the Delete Similar Regions/Events key command.
Conversely, if you want to keep all similar regions, events, or objects, and delete all others,
use the Delete but Keep Similar Regions/Events key command.
You can use the Event Channel +1 key command or the Event Channel −1 key commands
to alter the channel number of the selected event (or events) by one, making it easy to
reassign it or them to another MIDI channel.
Working with the Clipboard
The Clipboard is an invisible area of memory into which you can copy selected information
(such as regions or events), allowing them to be pasted to a different location.
The Clipboard is universal, which means that it can be used to exchange information
between projects.
All of the following options are available in the Edit menu.
Cut
All selected elements are removed from their current position, and placed in the Clipboard.
Any existing content in the Clipboard is overwritten in the process (default key command
assignment: Command-X).
Copy
A copy of all selected elements is placed in the Clipboard. The selected elements are left
in place. As with Cut, the contents of the Clipboard are overwritten (default key command
assignment: Command-C).
Paste
All content from the Clipboard is copied into the window with key focus. The Clipboard
contents are not erased in the process (default key command assignment: Command-V).
216 Chapter 8 Basic Operations