MODE_BINARY      3830 io.c           	    return MODE_BINARY("a+", "ab+");
MODE_BINARY      3832 io.c           	return MODE_BINARY("a", "ab");
MODE_BINARY      3836 io.c           	return MODE_BINARY("r", "rb");
MODE_BINARY      3838 io.c           	return MODE_BINARY("w", "wb");
MODE_BINARY      3840 io.c           	return MODE_BINARY("r+", "rb+");