character-string OpenVMS usage:char_string type: character string access: read only mechanism: by descriptor ASCII control string, consisting of the fixed text of the output string and FAO directives. The character-string argument contains the address of a descriptor pointing to this control string. resultant-length OpenVMS usage:word_unsigned type: word (unsigned) access: write only mechanism: by reference Length of the output string. The resultant-length argument contains the address of an unsigned word integer that is this length. resultant-string OpenVMS usage:char_string type: character string access: write only mechanism: by descriptor Fully formatted output string returned by LIB$SYS_FAO. The resultant-string argument contains the address of a descriptor pointing to this output string. directive-argument OpenVMS usage:varying_arg type: unspecified access: read only mechanism: unspecified Directive argument contained in longwords. Depending on the directive, a directive-argument argument can be a value to be converted, the address of the string to be inserted, or a length or argument count. The passing mechanism for each of these arguments should be the one expected by the $FAO system service.