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