6.2.22.3 "COBOL Language Reference" IBM Library Server

X 6.2.22.3 BY CONTENT Phrase

X If the BY CONTENT phrase is specified or implied for a parameter, the
X invoked method cannot change the value of this parameter as referenced in
X the INVOKE statement's USING phrase. Although, the invoked method can
X change the value of the data item referenced by the corresponding
X data-name in the invoked method's Procedure Division header. Changes to
X the parameter in the invoked method do not affect the corresponding
X argument in the invoking program.

X identifier-4

X Can be a data item of any level in the Data Division. Identifier-4
X cannot be a function-identifier.

X If defined in the Linkage Section, you must have already provided
X addressability for identifier-4 prior to execution of the INVOKE
X statement. You can do this by coding either one of the following:
X SET ADDRESS OF identifier-4 TO pointer or PROCEDURE/ENTRY USING.

X literal-2

X Can be:

X A nonnumeric literal
X A figurative constant (except ALL literal or NULL/NULLS)
X A DBCS literal

X ADDRESS OF Special Register

X See "ADDRESS OF" in topic 1.1.3.1.

X LENGTH OF Special Register

X See "LENGTH OF" in topic 1.1.3.3.

X OMITTED

X Indicates that no argument is passed.

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X 6.2.22.3 BY CONTENT Phrase

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