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out of date.
QBasic File not found
In the Open command dialog box, you specified a file
that does not exist. Check to see that the filename is
spelled correctly, and that you chose the correct
drive and directory.
ERR code 53