The general principles are laid down in the current version (OJ 2003, 523; also published in Supplement to OJ 1 of each year). Point 1(a) of the Code refers in turn, as regards the general requirements for epi members, to the RDR (OJ 1978, 91, also OJ 2008, 14; also published in Supplementary publication – OJ 1 of each year).