Developer for System z Enterprise COBOL for z/OS, Version 4.1, Compiler and Runtime Migration Guide
Using ILBOSTP0
ILBOSTP0 is still supported so that existing applications that use non-COBOL
programs as main programs will continue to run and provide the same results.
Note: Since ILBOSTP0 is AMODE 24, when used under Language Environment, Language Environment will automatically
set ALL31(OFF) and STACK(,,BELOW).