-=> Quoting mark lewis to Archie Swan <=-

 AS> Then I would suggest that you read the DOSBOOK entry

 ml> i don't have anything called DOSBOOK...

It's the built-in (and very extensive) help for DR-DOS.
 
 ml> i might also suggest that others specify which diskcopy command they
 ml> are talking about to avoid problems and misunderstandings in the
 ml> future ;) 

Actually, *most* DOS commands have version dependent options since
around DOS 3.2. 
--- FMailX 1.60