The Vision file system is the default file system used with ACUCOBOL-GT for all environments other than VMS.
AcuServer creates Vision Version 6 files by default. AcuServer can also be used to build and access Vision Version 3, 4, and 5 files. Version 5 and later files are generated in a dual file format, with data records stored in one segment and overhead key information stored in another.
For information on building Vision files in a version other than the default, see V_VERSION in Server Configuration Variables.