Controller 1, further comprising {TAIL ~ programming means} for {HEAD ~ remotely programming} said selection means for enabling and disabling said selection means 
Controller 1 , further comprising { TAIL ~ programming means } for { HEAD ~ remotely programming } said selection means for enabling and disabling said selection means
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH