Additionally, although a plurality of SRRs can exist in the opened session , all the SRRs of {HEAD ~ that session} do not have to be opened SRRs and it is sufficient that {TAIL ~ at least one opened SRR} exists in the opened session 
Additionally , although a plurality of SRRs can exist in the opened session , all the SRRs of { HEAD ~ that session } do not have to be opened SRRs and it is sufficient that { TAIL ~ at least one opened SRR } exists in the opened session
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 TAIL OTH OTH OTH OTH OTH