Jerome Fine replies: If you are running V05.00 OF RT-11 or later, you will find that the HELP command probably provides most of the same information as the "quick reference" manual. The DCL (DEC Command Language) interface provides a broad range of commands such as COPY, DIR, RENAME, etc. which are similar to what DOS adopted - DOS might have lifted its set of names from RT-11, since back in 1980, I doubt if anyone had attempted to trademark the COPY command. HELP * provides a list of the possible commands. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.