/FALLBACK
       /NOFALLBACK

    Controls whether the 8-bit DEC Multinational character set
    characters are displayed on the terminal in their 7-bit
    representation. The default depends on the /EIGHTBIT setting
    of the terminal. If the OpenVMS Terminal Fallback Facility (TFF)
    is enabled, it activates the default character conversion tables
    for the named terminal. For more information, see the OpenVMS
    Terminal Fallback Utility Manual (available on the Documentation
    CD-ROM). If TFF is not enabled on your system, the /FALLBACK
    qualifier has no effect and no error message is displayed.