The OpenVMS Terminal Fallback facility (TFF) provides a table- driven character conversion for terminals. The conversions are transparent to the application (unnoticed by the application software unless explicit inquiries are made). TFF can also perform compose character emulation on input. Furthermore, you can control which terminal keys are auto-compose keys. One of the applications of TFF is to allow users with National Replacement Character (NRC) set terminals to use software developed with the DEC Multinational Character Set (MCS). MCS is essentially the ASCII character set plus 128 characters currently used by owners of NRC terminals around the world. You can use TFF functions through Terminal Fallback utility (TFU) commands. More on-line help is available from the Terminal Fallback utility. To invoke TFU enter the following command in response to the DCL prompt: $ RUN SYS$SYSTEM:TFU The utility responds with the prompt: VAX/VMS Terminal Fallback Facility (TFF) TFU> After you invoke TFU, you can enter HELP or any of the TFU commands.