7.—(1) References to provisions for depreciation or diminution in value of assets are to be taken as references to any amount written off by way of providing for depreciation or diminution in value of assets.
(2) Any reference in an income and expenditure account to the depreciation of, or amounts written off, assets of any description is to be taken as a reference to any provision for depreciation or diminution in value of assets of that description.
(3) References to provisions for liabilities and charges (other than in paragraphs 33 to 40 of Schedule 6) are to be taken as a reference to any amount retained as reasonably necessary for the purpose of providing for any liability or loss which is either likely to be incurred, or certain to be incurred but uncertain as to amount or as to the date on which it will arise.