{TAIL ~ The sequencer} is also capable of rotating the beam up and down in {HEAD ~ a vertical plane} 
{ TAIL ~ The sequencer } is also capable of rotating the beam up and down in { HEAD ~ a vertical plane }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD