Important Notice

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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Switch:       L
 
  Function:     Causes any critical I/O errors (for example, disk
                drive door not closed) to immediately return control to
                the user program with an appropriate file status or error
 
  Default:      Off
                                    -♦-