H_FLAG
pmtab->p_ttyflags &= ~H_FLAG;
pmtab->p_ttyflags &= ~(H_FLAG);
gptr->p_ttyflags |= H_FLAG;
*ttyflags &= ~H_FLAG;
if (flags & H_FLAG)
flags &= ~H_FLAG;
if (pmptr->p_ttyflags & H_FLAG) {