With respect to the mandatory or non-mandatory nature of the provisions, the view was expressed that, in view of their possible impact on third parties, certain provisions contained in draft article 9 should not be open to variation by contract.
53. 关于条文的强制性或非强制性，代表们认为，鉴于其可能对第三方的影响，第9条草案中所载的某些条文不应该允许通过合同加以改动。