All of your hotkey definitions in c* are
in *.key files, but unfortunately nothing
_specific_ to flex or any plugins for that
matter. HOWEVER... you can record softkeys
1-5 (numbers) at the operator level...
these are good only for the current session
though, and you may see some funky behavior
with the overlays.
Combine that with the hotkeys for
hand/arrow/poly in c*...