CLR
CLR(FTS_NAMEONLY);
CLR(cflag, CSIZE|PARENB);
CLR(iflag, ISTRIP|INPCK|IGNPAR);
CLR(cflag, CSIZE);
CLR(iflag, INPCK);
CLR(cflag, PARODD);
CLR(iflag, INPCK);
CLR(iflag, INPCK|IGNPAR);
CLR(cflag, PARODD);
CLR(cflag, HUPCL);
CLR(cflag, MDMBUF);
CLR(cflag, CRTSCTS);
CLR(iflag, ICRNL);
CLR(oflag, ONLCR);
CLR(oflag, OXTABS);
CLR(oflag, OPOST);
CLR(cflag, CSIZE|PARENB);
CLR(lflag, ICANON);
CLR(lflag, ECHOE);
CLR(lflag, ECHOKE);
CLR(lflag, ECHOPRT);
CLR(lflag, ECHO);
CLR(lflag, ECHOCTL);
CLR(lflag, IXANY);
CLR(ntransmitted % mx_dup_ck);
CLR(seq % mx_dup_ck);
CLR(tp->t_state, TS_SO_OLOWAT);
CLR(tp->t_state, TS_SO_OCOMPLETE);
CLR(tp->t_state, TS_BUSY);
CLR(tp->t_state, TS_BUSY);
CLR(tp->t_state, TS_XCLUDE);
CLR(tp->t_state, TS_ZOMBIE);
CLR(tp->t_state, TS_CONNECTED);
CLR(tp->t_lflag, PENDIN);
CLR(t->c_lflag, EXTPROC);
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_TTSTOP);
CLR(tp->t_state, TS_TTSTOP);
CLR(tp->t_lflag, PENDIN);
CLR(tp->t_state, TS_LOCAL);
CLR(tp->t_state, TS_TBLOCK);
CLR(tp->t_state, TS_TBLOCK);
CLR(tp->t_state, TS_TBLOCK); /* try again later */
CLR(tp->t_state, TS_TBLOCK);
CLR(tp->t_state, TS_CAR_OFLOW);
CLR(tp->t_state, TS_TTSTOP);
CLR(tp->t_state, TS_CARR_ON);
CLR(tp->t_state, TS_CONNECTED);
CLR(tp->t_lflag, PENDIN);
CLR(tp->t_state, TS_TYPEN);
CLR(tp->t_lflag, FLUSHO);
CLR(c, ~TTY_CHARMASK);
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_CNTTB);
CLR(tp->t_state, TS_ERASE);
CLR(tp->t_lflag, FLUSHO);
CLR(c, ~TTY_CHARMASK);
CLR(tp->t_state, TS_SO_OCOMPLETE);
CLR(tp->t_state, TS_SO_OLOWAT);
CLR(tp->t_state, TS_REGISTERED);
CLR(c, TTY_ERRORMASK);
CLR(c, 0x80);
CLR(tp->t_state, TS_LNCH);
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_LOCAL);
CLR(tp->t_state, TS_ERASE);
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_TTSTOP);
CLR(c, ~TTY_CHARMASK);
CLR(tp->t_state, TS_ASYNC);
CLR(w->ww_wflags, WWW_MAPNL);
CLR(w->ww_uflags, WWU_KEEPOPEN);
CLR(w->ww_wflags, WWW_NOUPDATE);
CLR(w->ww_wflags, WWW_NOUPDATE);
CLR(w->ww_pflags, WWP_STOPPED);
CLR(w->ww_wflags, WWW_UNCTRL);
CLR(w->ww_wflags, WWW_UNCTRL);
CLR(w->ww_uflags, WWU_ALLFLAGS);
CLR(w->ww_wflags, WWW_HASCURSOR);
CLR(w->ww_wflags, WWW_UNCTRL);
CLR(w->ww_pflags, WWP_STOPPED);
CLR(w->ww_pflags, WWP_STOPPED);
CLR(w->ww_oflags, WWO_ALLFLAGS);
CLR(w->ww_wflags, WWW_HASCURSOR);
CLR(w->ww_wflags, WWW_INSERT);