In {TAIL ~ the printing operation}, first, record data is received from {HEAD ~ the host computer} 25  
In { TAIL ~ the printing operation } , first , record data is received from { HEAD ~ the host computer } 25
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH