The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
-55
:nFile Already Open
This message appears if you attempted to use
■ An OPEN statement for a sequential file that
was already open
■ A KILL statement referring to an open file
ERR code: 55