Apparatus and {HEAD ~ methods} for selectively distributing {TAIL ~ print pages} in multiple print engine systems 
for selectively distributing
Apparatus and { HEAD ~ methods } for selectively distributing { TAIL ~ print pages } in multiple print engine systems
OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH