Apple Logic Pro 9 - Manual (Page 347)

It is, of course, possible to directly edit, copy, move, and manage audio files. You do this
in the Sample Editor and Audio Bin. Details can be found in
Managing Audio Files .
MIDI Regions and Events
MIDI regions actually contain MIDI data events. They are not related to information stored
in external files. MIDI regions can be saved as individual files, but they can also be, and
generally are, stored with the Logic project.
The MIDI data events stored within MIDI regions can include note, controller, system
exclusive, and other information. These data events represent MIDI performances that
you have recorded or imported into Logic Pro. MIDI performances are generally created
with a MIDI keyboard, but can also be generated with MIDI controllers, MIDI guitars, your
computer keyboard, or the mouse.
MIDI data events can be affected as a group by processing the MIDI region that contains
them. Such processing—which takes place in the Inspector Region Parameter
box—includes transposition, quantization, timing delays, and more.
You can also edit individual events within a MIDI region. You do this by opening the
region in one of the MIDI editors available in Logic Pro. These editors allow you to precisely
alter the position, length, and pitch of MIDI note events. Other MIDI event types can also
be altered in various ways. You can also enter MIDI data with your MIDI keyboard, the
mouse, or computer keyboard in these editors.
Folder Regions
A folder is a region that can contain other regions, much like a folder in the Finder can
contain other folders or files.
One way to visualize a folder is as a project within a project. A folder can contain as many
tracks—featuring regions—as required.
A folder is placed on a track assigned to a folder in the track list, rather than an instrument
or audio track. Folder regions look like MIDI regions, but have a folder icon before the
folder name.
347 Chapter 12 Getting to Know Regions