It enacted several important codifications of and modifications to the common law tort of libel. Under Charlemagne codifications were also made of the Saxon law and the Frisian law. Among the legal reforms adopted by Charlemagne were the codifications of traditional law mentioned above. Despite the extensive codifications the fundamental doctrine of precedent found in common law still applies. He is acknowledged in research as a pioneering legislative achievement for the Germanic codifications. Many civil law legal systems have codifications of commercial law. However, early codifications of diplomatic law include the British Diplomatic Privileges Act 1708. Open codifications of Old Norse beliefs were either rare or non-existent. The first of these codifications was contained in the Foral of Afonso Mexia in 1526. In its structure and approach it was clearly influenced by the earlier European codifications. All of these codifications are, albeit with many amendments, still in effect today. Germany (1900), and Switzerland (1912) adopted their own codifications. This made it the only source of imperial law, and repealed all earlier codifications. Meanwhile, codifications also became more common in common law systems. Codifications date back millennia, with one early example being the Babylonian "Codex Hammurabi".