Also in some embodiments, the light sources are selectable as {TAIL ~ individual sources} or in {HEAD ~ combination} sources used in conjunction 
Also in some embodiments , the light sources are selectable as { TAIL ~ individual sources } or in { HEAD ~ combination } sources used in conjunction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH