{HEAD ~ The position designator} 110 determines {TAIL ~ the displayed position} of the child frame video in accordance with displayable time information of the child frame video and information on the displayed area or displayable area depending on time, included in the data for display 
determines
{ HEAD ~ The position designator } 110 determines { TAIL ~ the displayed position } of the child frame video in accordance with displayable time information of the child frame video and information on the displayed area or displayable area depending on time , included in the data for display
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH