This thread does get me thinking, though. Has anyone gone through and cataloged which items in UserKeyMap.ini actually do anything?
Also, for reference, F4 is 115, not 74. 74 is definitely J.
It seems that the numbers follow the ASCII standard to a point, but there are some mappings that don't fit into the ASCII listing, particularly those that refer to lowercase letters and symbols that you would need to press the Shift key to access on a normal keyboard. For example, F4 is 115, which is "s" on the ASCII chart.
Maybe I'll start a new thread on this on one of the other boards. I'm guessing Freelancer Modding would be best. Or I might just forget it and get back to playing the game...