{HEAD ~ The user processes} are configured for {TAIL ~ execution} on the processors for interfacing multiple subscriber locations 
are configured for
{ HEAD ~ The user processes } are configured for { TAIL ~ execution } on the processors for interfacing multiple subscriber locations
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH