The DBCS option ensures that the listing, if generated, is sensitive to the possible presence of DBCS even though the GRAPHIC option has not been specified.
.-NODBCS-. >>-+-DBCS---+--------------------------------------------------><
Under z/OS® UNIX System Services, the NODBCS option causes the listing, if generated, to show all DBCS shift-codes as ".".
Under both batch and z/OS UNIX System Services, the NODBCS option ensures that the header text in the listing page does not contain unmatched shift codes.
The NODBCS option should not be specified if the GRAPHIC option is also specified.