The charter documents of a corporation proposing to issue preferred shares (which are nonparticipating and nonconvertible) without full voting rights should normally provide that the holders of such preferred shares shall have the right to reasonable representation on the board of directors upon a cumulative default, whether consecutive or not, of dividend payments for two years and that such shall continue until the full payment of all arrears in dividends on such preferred shares. The right to elect a majority of the board is presumptively reasonable.