However, despite such demand there has been no conventional method for giving {TAIL ~ a changeable displayed position} for the child frame in accordance with the change of {HEAD ~ the parent frame video} as described above 
However , despite such demand there has been no conventional method for giving { TAIL ~ a changeable displayed position } for the child frame in accordance with the change of { HEAD ~ the parent frame video } as described above
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH