On MS-DOS, OS/2, Windows, and UNIX, ACUCOBOL-GT uses the Vision indexed file system to manage its indexed data files For these systems, ACUCOBOL-GT comes with an indexed file utility program called vutil that can be used to examine files, extract data records, and rebuild corrupted indexes. The full name of this utility is "vutil32", but here we refer to it simply as "vutil". The vutil utility is not supplied for VMS systems.