 The rules of the "Cancellaria" had the force of law unless exception was made by a concordat.In ancient times, these rules lost their force on the death of the Pope, and revived only upon the express confirmation of his successor, but Pope Urban VIII declared that without an express confirmation the rules of the "Cancellaria" were restored to validity on the day after the election of the succeeding Pope.The commission of cardinals responsible for the reformation of the formulae of Papal bulls was responsible also for revising the rules of the "Cancellaria".