Apple Logic Pro 8 - Manual (Page 911)

Chapter 39 Working in the Environment 911
Physical Input and Sequencer Input Objects
The Physical Input object represents the physical inputs of your MIDI interface; the
Sequencer Input object represents the MIDI input of Logic Pro. You can only have one
of each of these objects in the Environment.
To create a Physical Input object:
m Choose New > Physical Input.
To create a Sequencer Input object:
m Choose New > Sequencer Input.
To make use of an existing object, drag it onto the relevant layer. This will not affect its
cabling.