In an SGML application, a tag library is the document that defines the elements used in the application and provides information to authors, editors, and implementors concerning the meaning and use of elements and their attributes. On the page containing the element definition, the tag name is the first word at the top of the page.
Element names are expanded versions of tag names intended for a human audience.
On the page containing the element definition, the element name follows the tag name, surrounded by parentheses. Elsewhere in the EAD Tag Library, element names are capitalized. This definition is intended to provide enough information to distinguish the element from other elements and is not necessarily a rigorous definition. The attributes associated with the element are listed and defined. The values an attribute may take are also listed and defined.