Directs BACKUP to process files in a manner suitable for data
    interchange (software distribution) by excluding information that
    would prevent other utilities or sites from reading the BACKUP
    save set.

    The /INTERCHANGE qualifier implies /CONVERT when the input is
    an ODS-5 disk or file. (You can also specify /NOCONVERT with the
    /INTERCHANGE qualifier.)

    The effects of the /INTERCHANGE qualifier are as follows:

    o  Directories not selected as files are not copied.

    o  During the SAVE operation, Access Control Lists (ACLs)
       from the source directory are copied. To modify this
       behavior, use the /INTERCHANGE qualifier. The /INTERCHANGE
       qualifier does not copy the ACLs from the source directory.

    o  During the RESTORE operation, ACLs from the source direc-
       -tory are restored. The restored file does not inherit the
       ACLs from the destination directory. To modify this behavior
       and to inherit the ACLs from the destination directory for
       the restored file, use the /INTERCHANGE qualifier.
       /INTERCHANGE allows restored file to inherit the ACLs from
       the destination directory.

    o  Block size on magnetic tape is limited to 8192 bytes.

    o  Normal error recovery is used to write magnetic tapes so that
       no bad records exist on the resulting magnetic tape.