The non reference, {TAIL ~ e.g. red and blue, monochromatic channels} now float in the output HDTV signal range relative to their relationship to {HEAD ~ the reference}, e.g. green, channel 
The non reference , { TAIL ~ e.g. red and blue , monochromatic channels } now float in the output HDTV signal range relative to their relationship to { HEAD ~ the reference } , e.g. green , channel
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH