7In the following enactments, that is to say—
(a)section 19 of the Town and Country Planning (Scotland) Act 1945 ;
(b)section 32 of and Schedule 5 to the Town and Country Planning (Scotland) Act 1947 ;
(c)section 103(3) and Part X of the Town and Country Planning Act 1962 ;
(d)section 13 of the [1962 c. 58.] Pipe-lines Act 1962 ;
(e)the New Towns Act 1965 ;
(f)the New Towns (Scotland) Act 1968 ;
(g)sections 70 and 71 of and Schedule 6 to the Town and Country Planning Act 1968 ; and
(h)sections 71 and 72 of and Schedule 5 to the [1969 c. 30.] Town and Country Planning (Scotland) Act 1969,
" operational land " shall, in relation to the Authority, mean land of the Authority's of any such class as may be prescribed ; and—
(i)the definition of a class of land for the purposes of regulations made in pursuance of this paragraph may be framed by reference to any circumstances whatsoever ; and
(ii)without prejudice to section 63(4)(a) of this Act, regulations so made may prescribe different classes of land for the purposes of different enactments mentioned in the preceding provisions of this paragraph ; and
(iii)if any question arises whether land of the Authority's falls within a class prescribed in pursuance of this paragraph, it shall be determined by the Secretary of State.