Apple Logic Express 8 - Manual (Page 886)

886 Chapter 38 Working in the Environment
This function allows you to follow the cabling from one (serially-cabled) object to the
next. If several objects are connected in parallel, or several cable connections are
selected, the path of the top cable is followed.
The Edit > Select Cable Origin command essentially performs the reverse task, where
the MIDI signal flow is back-tracked to the source (or origin) object. This is particularly
useful for troubleshooting, or when you want to make changes to a number of serially
cabled objects (by changing the original).
Toggling Your Selection
Just as in the Arrange and editor windows, you can change the status of any selected
objects in the current layer by choosing Edit > Toggle Selection.
The MIDI Signal Path
Before any MIDI events received at your computer’s MIDI inputs can be recorded by
Logic Express, there must be a connection between two Environment objects, namely
the:
 Physical Input object: This represents the MIDI In port(s) of your MIDI interface.
 Sequencer Input object: This represents the door in to Logic Express for incoming
MIDI events.
In Logic Express, incoming MIDI events (which arrive at the Sequencer Input object) are
always directed to the selected track in the Arrange area’s track list, where they can be
recorded in MIDI regions.