2. Edicts are somewhat similar to public proclamations. Their difference consists in this, that the former have authority and form of law in themselves, whereas the latter are at most, declarations of a law, before enacted by congress, or the legislature.
3. Among the Romans this word sometimes signified, a citation to appear before a judge. The edict of the emperors, also called constitutiones principum, were new laws which they made of their own motion, either to decide cases which they had foreseen, or to abolish or change some ancient laws. They were different from their rescripts or decrees. These edicts were the sources which contributed to the formation of the Gregorian, Hermogenian, Theodosian, and Justinian Codes. Vide Dig. 1, 4, 1, 1; Inst. 1, 2, 7; Code, 1, 1 Nov. 139.