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