The CALLINTERFACE directive specifies the interface convention for CALL statements. The convention specified stays in effect until another CALLINTERFACE specification is made in the compilation unit.
Format >>-+->>CALLINTERFACE-+--+--------+--+--------------+----------->< '->>CALLINT-------' '-SYSTEM-' +-DESC---------+ +-DESCRIPTOR---+ +-NODESC-------+ '-NODESCRIPTOR-'
Specify >>CALLINTERFACE only in the procedure division.
The positions of CALL statements relative to the CALLINTERFACE directive are recognized following any processing of COPY and REPLACE statements. For example, CALL statements and CALLINTERFACE directives in COPY text are processed by the rules specified for the CALLINTERFACE directive.
If you specify syntax in the CALLINTERFACE directive that is not supported, the entire CALLINTERFACE directive is ignored.