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out of date.
Unprintable error
An error message is not available for the error condition
that exists. This may be caused by an ERROR statement that
uses an error-code argument value for which BASIC has no
error message string.