...available in a revolving fund, except where Congress has granted permission to do so. Such permission normally takes the form of a contract authorization....appropriation to liquidate obligations incurred pursuant to tl'em. Most contract authorizations appear in annual appropriation acts ; a few are made by substantive...

...available In a revolving fund, except where Congress has granted permission to do so. Such i>ermission normally takes the form of a contract authorization....enter into long-term leases. Such authority cannot be flrmly stated in dollar terms and hence is not included in the totals of budget authorizations.) Contract...