Any resolution or trust indenture authorizing the issuance of securitiees [securities] or any other instrument appertaining thereto may contain covenants and other provisions (notwithstanding such covenants and provisions may limit the exercise of powers conferred hereby), in order to secure the payment of such securities, in agreement with the holders and owners of such securities, as the board may determine, including without limiting the generality of the foregoing, all such acts and things as may be necessary or convenient or desirable in order to secure the authority’s securities, or in the discretion of the board tend to make the securities more marketable, notwithstanding that such covenant, act or thing may not be enumerated herein, it being the intention hereof to give the authority power to do all things in the issuance of securities and for their security except as herein specifically limited.