A specialized service routine designed to read an input stream, store programs and data on random access storage for later processing, identify the control information contained in the input stream, and store this control information separately in the appropriate control list.; 一種專用的服務例行程序,負責讀進輸入流、存儲程序及數(shù)據(jù),并將它們存放在隨機存取 存儲設備上,以便以后處理、識別輸入流中的控制信息,并將它們分別存入相應的控制表中。