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