73 Presupposed rules of national law

Further, a Directive normally presupposes the existence of certain rules in national law. For example, when a consumer exercises a right to withdraw from a contract, questions of liability in restitution are mainly left to national law. It may be argued that information about the law that is presupposed is more than ‘essential background’. The Commission's Second Progress Report describes it as ‘directly relevant’.53. Whatever the correct classification, this information is clearly important. Put simply, European legislators need to know what is a problem in terms of national laws and what is not. This is a further reason why the DCFR has a wide coverage and why the full DCFR will contain extensive notes, comparing the model rules to the various national laws.