In this fourth edition, 5 new exercises (with their solutions) have been added, the "history" of many exercises has been modified, and questions have been added or reformulated, while the solutions of all exercises included in the third edition have been reviewed, improved, and enriched with the latest theory and, mainly, case law. At the same time, any recent relevant legislation has been taken into account, where necessary.

In this edition, the goal remains to bridge the gap between theory and practice. The solutions are structured inductively, so as not only to provide the answer to the questions but also to indicate the method of approach and legal evaluation of the practical issue.