means for assigning an effects observable command from each of the plurality of command sets to one of {HEAD ~ said plurality} of assignable user actuated switches or {TAIL ~ keys} 
of
means for assigning an effects observable command from each of the plurality of command sets to one of { HEAD ~ said plurality } of assignable user actuated switches or { TAIL ~ keys }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL