If "= NEW" is specified, a new Unique Identifier value is created
    and stored in both the root file and ALL active storage area file
    headers when the user executes the next COMMIT command. Note that
    to ensure database integrity, ALL storage area file headers will
    be updated. Use the AREA_HEADER commands described elsewhere in
    this chapter for storing the current root Unique Identifier value
    in specific designated storage areas.

    If "= NEW" is not specified, this command stores the current
    database root Unique Identifier value into the storage area
    header blocks of ALL active storage area and storage area
    snapshot files which are currently defined in the database root
    when the user executes the next COMMIT command.