of its objects: moreover paragraph (b) would cover measures designed to prevent inflationary tendencies. There is also the narrower ground that the restriction of transport charges helps the distribution of all kinds of supplies and so s within all the purposes set out in the subsection, while any permitted increase of charges (above the statutory limit) must be justified as necessary to "maintain" the transport undertaking. It will be noted that are now covered by the maintaining, controlling and and this indicates the economic Subsection (3) provides, in accordance with the desires of the Departments concerned, that existing Orders should remain in force and automatically extend to the new purposes.