MODE_BINARY      5013 io.c           	    return MODE_BINARY("a", "ab");
MODE_BINARY      5016 io.c           	    return MODE_BINARY("a+", "ab+");
MODE_BINARY      5023 io.c           	return MODE_BINARY("r", "rb");
MODE_BINARY      5025 io.c           	return MODE_BINARY("w", "wb");
MODE_BINARY      5028 io.c           	    return MODE_BINARY("w+", "wb+");
MODE_BINARY      5030 io.c           	return MODE_BINARY("r+", "rb+");