iob_write
(void) iob_write(iob, iob->iob_iop, iob->iob_buf, iob->iob_nbytes);
ret = iob_write(iob, iob->iob_iop, buf, n);
(void) iob_write(iob, iob->iob_pgp, "\r", sizeof (char));
(void) iob_write(iob, iob->iob_pgp, io_prompt, io_promptlen);
(void) iob_write(iob, iob->iob_pgp, io_pbcksp, io_pbcksplen);
(void) iob_write(iob, iob->iob_pgp, io_perase, io_peraselen);
(void) iob_write(iob, iob->iob_pgp, io_pbcksp, io_pbcksplen);
if (iob_write(iob, iob->iob_iop, iob->iob_buf,