Instructs the assembler to accept double-byte character set
data, and to support graphic (G-type) constants and self-defining
terms. The assembler recognizes X'0E' and X'0F' in character
strings enclosed by apostrophes, and treats them as Shift-Out and
Shift-In control characters for delimiting DBCS data.
NODBCS
Specifies that the assembler does not recognize X'0E' and X'0F'
as double-byte character set data delimiters, and does not support
graphic (G-type) constants and self-defining terms.