{HEAD ~ A library} of programs is maintained on {TAIL ~ a host workstation} designated as a controlling workstation within the workgroup 
is maintained on
{ HEAD ~ A library } of programs is maintained on { TAIL ~ a host workstation } designated as a controlling workstation within the workgroup
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH