An information processing apparatus serves as a host unit for communicating to {HEAD ~ a plurality} of printing apparatuses via {TAIL ~ a network} 
An information processing apparatus serves as a host unit for communicating to { HEAD ~ a plurality } of printing apparatuses via { TAIL ~ a network }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL