$COBDIR/demo COBOL source of pi example: pi.cbl COBOL source of stock1 example: stock1.cbl COBOL source of the multi-user demonstration suite: mudemo.cbl stockiom.cbl, stockin.cbl stockout.cbl, stockioa.cbl C calling COBOL demonstration suite: account.cbl, cmain.c, COBOL source of screen handling demonstration program: scdemo1.cbl