{HEAD ~ The printer}, of the nature just discussed, communicates with {TAIL ~ the microprocessor} 30 by the EF4 line and is enabled to receive data from the buffers 64,66 by the PSTR output of the circuit 48 
communicates with
{ HEAD ~ The printer } , of the nature just discussed , communicates with { TAIL ~ the microprocessor } 30 by the EF4 line and is enabled to receive data from the buffers 64,66 by the PSTR output of the circuit 48
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH