checking whether a bookmark is placed on a thumbnail image of {TAIL ~ the broadcast content} selected by {HEAD ~ the user}, the thumbnail image being a most recent one before stopping replaying the broadcast content; and 
checking whether a bookmark is placed on a thumbnail image of { TAIL ~ the broadcast content } selected by { HEAD ~ the user } , the thumbnail image being a most recent one before stopping replaying the broadcast content ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH