85. Disc drive hints ~~~~~~~~~~~~~~~~ *BACKUP produces a duplicate of the original disc, with all the files, (programs), in the same order on the disc. *COPY, on the other hand, reverses the order on the disc. The catalogue will not show this up, as it is always in alphabetical order, but you can tell if you use *COMPACT or *INFO. If you use a '*' command which none of the ROMs recognize, then the Acorn DFS's will attempt to *RUN a file of that name. If the file is not a machine-code routine, then the attempt will fail. However, the Watford DFS's go one step further, because they will *EXEC the file if it is text, (ie if it has been SPOOLed onto disc). This was written before the Master and the 1770 DFS came out. I think that they too are semi-intelligent in this situation.