In this volume, the Study Group and the Acquis Group present the first academic Draft of a Common Frame of Reference (DCFR). The Draft is based in part on a revised version of the Principles of European Contract Law (PECL) and contains Principles, Definitions and Model Rules of European Private Law in an interim outline edition. It covers the books on contracts and other juridical acts, obligations and corresponding rights, certain specific contracts, and non-contractual obligations. One purpose of the text is to provide material for a possible "political" Common Frame of Reference (CFR) which was called for by the European Commission's Action Plan on a More Coherent European Contract Law of January 2003.