functional macroinstructions
Macroinstructions that operate on message segments and perform functions such as (a) message editing, (b) checking validity of codes used in the header, (c) routing messages to specified destinations, (d) maintaining logs of messages, and (e) checking for errors in transmission or specification.; 對報文段進行操作的宏指令,完成以下功能:(1)報文編輯,(2)檢驗報頭碼的有效性, (3)將報文送到指定的目的地,(4)管理報文登錄,(5)校驗傳送或說明中的誤差。