It is no doubt true, as the learned Solicitor-General submitted, that the meaning of the words of s. 16 must be construed in the context provided by the Act as a whole. However, as will be seen, there is nothing in the other provisions of the Act that leads to the conclusion that it is intended that the power to determine standards in s. 16(1)(d) should include a power to approve or disapprove of a particular programme: the indication is to the contrary. It is clear that if the words of s. 16(1)(d) are given their ordinary and natural meaning, that provision does not authorize a determination in the terms of par. C.T.S. 3(2)(b). A power to decide whether a particular programme should be classified as complying with a standard is, of course, not the same as a power to determine a standard. Nor is the making of par. C.T.S. 3(2)(b) authorized by s. 16(1)(f), or by s. 17(1). Section 16(1)(f) may empower the Tribunal to determine, for example, that only programmes which meet the standards determined for children's programmes should be televised within particular hours, but it does not go further and give the Tribunal power to decide that a particular programme should not be shown during those hours. Further, s. 17(1) enables the Tribunal to give such orders or directions as it thinks fit for the purpose of exercising its powers or functions, including the function of determining standards, but does not give the Tribunal power to give directions for the purpose of enforcing standards which have already been laid down, or for the purpose of substituting its judgment in a particular case for the application of a predetermined standard.