The light source is capable of sending {TAIL ~ a light} to {HEAD ~ the light} receiving means of the editing wheel 
The light source is capable of sending { TAIL ~ a light } to { HEAD ~ the light } receiving means of the editing wheel
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH