Recital 23 Different arrangements, based on the implementation of the exception or limitation provided for in Directive 2001/29/EC or on licensing agreements covering further uses, are in place in a number of Member States in order to facilitate educational uses of works and other subject matter. Such arrangements have usually been developed taking account of the needs of educational establishments and of different levels of education. While it is essential to harmonise the scope of the new mandatory exception or limitation in relation to digital uses and cross-border teaching activities, the arrangements for implementation can vary from one Member State to another, to the extent that they do not hamper the effective application of the exception or limitation or cross-border uses. Member States should, for example, remain free to require that the use of works or other subject matter respect the moral rights of authors and performers. This should allow Member States to build on the existing arrangements concluded at national level. In particular, Member States could decide to subject the application of the exception or limitation, fully or partially, to the availability of suitable licences, covering at least the same uses as those allowed under the exception or limitation. Member States should ensure that where licences cover only partially the uses allowed under the exception or limitation, all the other uses remain subject to the exception or limitation.