In this volume the Study Group on a European Civil Code (the ‘Study Group’) and the Research Group on Existing EC Private Law (the ‘Acquis Group’) present the revised and final academic Draft of a Common Frame of Reference (DCFR). It contains Principles, Definitions and Model Rules of European General Intr. 1 3 Private Law in an outline edition. Among other goals, its completion fulfils an obligation to the European Commission undertaken in 2005. The Commission’s Research Directorate-General funded part of the work. One purpose of the text is to serve as a draft for drawing up a ‘political’ Common Frame of Reference (CFR) which was first called for by the European.