An input device allows the viewer to browse through the schedule information area and obtain more information about {HEAD ~ programs} of {TAIL ~ particular interest} 
An input device allows the viewer to browse through the schedule information area and obtain more information about { HEAD ~ programs } of { TAIL ~ particular interest }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL