One way of dealing with this is to query the User regarding {HEAD ~ the source} of {TAIL ~ the environmental light} by a software application operating at the host computer coupled to the display 
of
One way of dealing with this is to query the User regarding { HEAD ~ the source } of { TAIL ~ the environmental light } by a software application operating at the host computer coupled to the display
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH