Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

DBCS

The DBCS option determines what, if any, bytes are accepted as forming DBCS.

Read syntax diagramSkip visual syntax diagram   .-NODBCS-.
>>-+-DBCS---+--------------------------------------------------><
 

When the DBCS option is specified, if the GRAPHIC option is also specified, then appropriate DBCS characters from the indicated language will be accepted in identifiers, literals etc.

Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide