A routine that is used when initiating a new tape or when reaching the endof reel of a multireel file. This routine need not be included in memory if all tapes are setup or initiated automatically by the system supervisor and the open or close macros are not used. The importance of this routine is that it performs necessary tape housekeeping, checks on the operator, and provides necessary information concerning the program being run.; 當(dāng)初始化一盤新帶，或一個多卷文件到達(dá)卷尾時使用的例行程序。如果所有磁帶都已準(zhǔn)備好，或已由系統(tǒng)管理程序自動進行了磁帶的初 始化，不用打開宏指令或關(guān)閉宏指令時，則無需將該例行程序裝入內(nèi)存。這一例行程序的重 要性在于它進行必要的磁帶內(nèi)務(wù)處理，對操作員的工作進行檢查，并提供有關(guān)程序運行的必 要信息。