In COBOL, the name and the header for an environment division paragraph in which object program requirements for specific input/output techniques are specified. These techniques include rerun checkpoints, sharing of areas by several data files, and multiple file storage on a single tape device.; 在COBOL語言中,環(huán)境部中某一段的段名和段頭,其中規(guī)定了目標程序?qū)μ囟ǖ妮斎胼敵?技術(shù)的要求。這些技術(shù)包括檢驗點重新運行、若干數(shù)據(jù)文件的區(qū)域共享以及在單一磁帶 設(shè)備上的多文件存儲。