PARENTH_POSN
flags |= (SIGN_POSN_USED|PARENTH_POSN);
*sign_posn = (flags & PARENTH_POSN) ? 0 :
*sign_posn = (flags & PARENTH_POSN) ? 0 :
*sign_posn = (flags & PARENTH_POSN) ? 0 : lmon->n_sign_posn[0];
*sign_posn = (flags & PARENTH_POSN) ? 0 : lmon->p_sign_posn[0];