The Environment Division describes the program's physical environment, primarily through the descriptions of the files it uses.
[ [ ENVIRONMENT DIVISION. ]
[ [ CONFIGURATION SECTION. ]
[ SOURCE-COMPUTER. source-computer-entry ]
[ OBJECT-COMPUTER. object-computer-entry ]
[ SPECIAL-NAMES. [ special-names-entry ] ] ]
[ [ INPUT-OUTPUT SECTION. ]
[ FILE-CONTROL. ] { file-control-entry } ...
[ I-O-CONTROL. [ i-o-control-entry ] ] ] ]
The division header is optional for the Environment Division.
The Environment Division entries are described in the help topics in this section.