R_PRINT_REQUEST
if (mrecv(buffer, MSGMAX) != R_PRINT_REQUEST) {
(void)getmessage (buffer, R_PRINT_REQUEST, &status, &req_id, &printer_chk);
case R_PRINT_REQUEST:
case R_PRINT_REQUEST:
mputm(md, R_PRINT_REQUEST, status, NB(req_id), chkprinter_result);
(rcv_msg(svc, R_PRINT_REQUEST, &status, tmp, &bits) < 0))