A law is called a national ordinance in Aruba. A national ordinance is a decree that contains generally binding regulations, taken jointly by the government and Parliament, by a procedure as described in the Constitution of Aruba.  National ordinances are sources of law, yet they are not the only system where rules of law are found. National decrees, encompassing general measures and ministerial regulations contain generally binding regulations as well. In addition, there are international treaties or decrees of international organizations (e.g. the European Union), which generally may include binding regulations. Traditions and verdicts of legal entities (jurisprudence) are also sources of law. Furthermore, issues such as principles of equality and general principles of good governance also play a key role.