OPTIONS(NODESCRIPTOR) is an entry name attribute. It specifies that argument descriptors will not be passed to this entry by callers. Argument descriptors are used to pass specific details about actual parameters in cases where parameter declarations contain CHAR(*) or DIMENSION(*) attributes. The OPTIONS(NODESCRIPTOR) attribute is normally used to suppress the generation and passing of the descriptor(s) to a non-PL/I procedure.
OPTIONS(ASM) and OPTIONS(COBOL) are equivalent to OPTIONS(NODESCRIPTOR).