PACK

    PACK physically removes records that are marked for deletion from the
    active database file.

Syntax

    PACK

Usage

    All open index files are automatically REINDEXed.

    After you execute a PACK command, the disk space used by the deleted
    records is reclaimed when the file is closed.  Note that PACK does not
    create a backup file or use any temporary files.  All file operations
    are internal to the current database file.