6.2.4.1 "COBOL Language Reference" IBM Library Server

6.2.4.1 USING Phrase

The USING phrase specifies arguments that are passed to the target program.

Include the USING phrase in the CALL statement only if there is a USING
X phrase in the Procedure Division header or the ENTRY statement through which the called program is invoked. The number of operands in each USING phrase must be identical.

For more information on the USING phrase see "The Procedure Division Header" in topic 6.1.2.

The sequence of appearance of the identifiers in the USING phrase of the CALL statement and in the corresponding USING phrase in the called subprogram's Procedure Division header determines the correspondence between the identifiers used by the calling and called programs. This correspondence is positional.

X The sequence of appearance of the identifiers in the USING phrase of the
X CALL statement and in the corresponding USING phrase in the called
X program's ENTRY statement determines the correspondence between the
X identifiers used by the calling and called programs.

The values of the parameters referenced in the USING phrase of the CALL statement are made available to the called subprogram at the time the CALL statement is executed. The description of the data item in the called program must describe the same number of character positions as the description of the corresponding data item in the calling program.

X The BY CONTENT, BY REFERENCE and BY VALUE phrases apply to parameters that
X follow them until another BY CONTENT, BY REFERENCE, or BY VALUE phrase is encountered. BY REFERENCE is assumed if you do not specify a BY CONTENT,
X BY REFERENCE, or BY VALUE phrase prior to the first parameter.

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6.2.4.1 USING Phrase

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