receiving a request for {HEAD ~ a replay} of a broadcast content selected by the user so as to replay {TAIL ~ a same video stream} again after stopping the video stream of the broadcast content 
receiving a request for { HEAD ~ a replay } of a broadcast content selected by the user so as to replay { TAIL ~ a same video stream } again after stopping the video stream of the broadcast content
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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