A built-in integer shelf that provides the markup error code number. This shelf can be accessed only from the header and body of
OmniMark's built in parsers assign each markup warning or error a unique error code number. These numbers are fixed for all future releases of OmniMark, although new ones may be added. These error code numbers provide a reliable way of identifying an error or warning since the message text can change, for example, as a result of user feedback.
All errors produced by the external markup parser interface produce a single error code. You must consult the error message text to determine the error.