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Function prototype data

Function prototype data is defined within the LINKAGE SECTION of the DATA DIVISION of a function prototype definition.

Function prototype data is organized into logical records and independent data description entries in the same manner as program data. Since no program object is produced when you compile a function prototype, function prototype data has no representation at runtime. Rather, the data description entries provide the information to the compiler in order to perform conformance checking between the invocation of a function and its prototype, as well as consistency checking between prototypes of the same name.

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