are introduced as well. Regional harmonisation sets its footprint both internally and externally. Innovative (or reintroduced) methods and phenomena for the harmonisation of commercial law have been suggested. Still, the most important and dominant means of harmonisation are the traditional multilateral conventions, the flexibility of which have been improved by different types of reservations and review and/or revision clauses. Taken together, the harmonisation process with its various and different means constitutes a circle of law harmonisation, in which circle there is an interaction between, and reciprocal influence of, all the various formal or informal means of harmonisation.