Specifies whether or not the backup file name includes an edit
    string. When the EDIT STRING clause is used, the specified backup
    file name is edited by appending any or all of the edit string
    options listed in the following table.

    Edit String
    Option         Meaning

    SEQUENCE       The journal sequence number of the first journal
                   file in the backup operation.
    YEAR           The current year expressed as a 4-digit integer.
    MONTH          The current month expressed as a 2-digit integer
                   (01-12).
    DAY            The current day of the month expressed as a 2-
                   digit integer (00-31).
    HOUR           The current hour of the day expressed as a 2-digit
                   integer (00-23).
    MINUTE         The current minute of the hour expressed as a
                   2-digit integer (00-59).
    JULIAN         The current day of the year expressed as a 3-digit
                   integer (001-366).
    WEEKDAY        The current day of the week expressed as a 1-digit
                   integer (1-7) where 1 is Sunday and 7 is Saturday.
    literal        Any string literal. This string literal is copied
                   to the file specification. See Quoted Character
                   String for more information about string literals.

    Use a plus sign (+)  between multiple edit string options. The
    edit string should be 32 characters or less in length.

    The default is NO EDIT STRING which means the BACKUP FILENAME
    supplied is all that is used to name the backup file.