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