Armory refers to “that aspectof a herald’s work which is concerned with the marshalling and regulation of coats of arms and other hereditary devices and insignia according to established conventions, practices, and precedents” (Stephen Friar). As such, it may be subdivided into three important aspects:
• theoretical armory which deals with the laws and rules underlying the design of a coat of arms, the right to bear of coat of arms, the history of armory and, finally, the knowledge about the individual devices which, at an earlier age, was identical with the knowledge of persons;
• the practical art of armory which deals with the creation and the design of a coat of arms, its outline or sketch, and the correct armorial representation of all parts and components of a coat of arms, according to established conventions and precedents;
• and, finally, the legal aspects of armory which comprise the various rights to coats of arms and their use, including the right to use a seal, the control of the uniqueness of individual devices, distinctive features, and the titles to given coats of arms.