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