{HEAD ~ The connections} between {TAIL ~ connection management device} 20 and server 14 are typically persistent connections 
between
{ HEAD ~ The connections } between { TAIL ~ connection management device } 20 and server 14 are typically persistent connections
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH