Apple Logic Express 9 - Manual (Page 80)

Once you have a good understanding of Logic Express fundamentals, and how you like
to work, you can freely assign your own set of key commands. Logic Express functions
and options that can be assigned to key commands can also be assigned to MIDI
commands, sent from your MIDI controller. More detail on these advanced topics can be
found in
Working with Key Commands .
80 Chapter 3 Overview of the Logic Express Interface