++++ 1. Approximation of laws ° Measures for establishing the single market ° Derogating national rules ° Review by the Commission ° Procedure (EEC Treaty, Arts 8a and 100a) 2. Acts of the institutions ° Statement of reasons ° Obligation ° Scope ° Decision based on Article 100a(4) of the Treaty, confirming national rules derogating from a harmonization measure (EEC Treaty, Arts 100a(4) and 190; Commission Decision of 2 December 1992)