In one aspect, the viewer may watch a program on the currently tuned channel, while browsing through {HEAD ~ the other channels} on {TAIL ~ a portion} of the television screen 
on
In one aspect , the viewer may watch a program on the currently tuned channel , while browsing through { HEAD ~ the other channels } on { TAIL ~ a portion } of the television screen
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH