SMIOERR_FILENO
#define smioerr (&SmIoF[SMIOERR_FILENO])
smio(SMWR|SMNBF, SMIOERR_FILENO, "smioerr"), /* smioerr */
smstd(SMWR|SMNBF, SMIOERR_FILENO, "smiostderr") /* smiostderr */