for displaying the child frame at an appropriate displayed position using {HEAD ~ the data} for {TAIL ~ display} 
for displaying the child frame at an appropriate displayed position using { HEAD ~ the data } for { TAIL ~ display }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL