COBOL for Windows does not recognize the following host runtime options, and treats them as not valid: AIXBLD, ALL31, CBLPSHPOP, CBLQDA, COUNTRY, HEAP, MSGFILE, NATLANG, SIMVRD, and STACK.
On the host, you can use the STORAGE runtime option to initialize COBOL WORKING-STORAGE. With COBOL for Windows, use the WSCLEAR compiler option.
related references
WSCLEAR