IOPARM (open, round, 1 << 20, char2)
IOPARM (open, sign, 1 << 21, char1)
IOPARM (open, asynchronous, 1 << 22, char2)
+IOPARM (open, newunit, 1 << 23, pint4)
IOPARM (close, common, 0, common)
IOPARM (close, status, 1 << 7, char1)
IOPARM (filepos, common, 0, common)