Complements AS 3514 by providing additional tutorial information. It is not intended, and should not be regarded, as an extension, modification, or interpretation of AS 3514. The SGML language contains a number of components, some of which are optional features. The tutorial information covers the main components of the language only; notably a discussion of LINK, CONCUR, and DATATAG is outside the scope of this Standard. The intended audience is mainly document type designers already familiar with the basic concepts of SGML, but requiring more tutorial information on techniques for using SGML for various applications. Subclauses 5.3 and 8.4 are written in the style of a "User Guide" and can be used as a basis for end-user documentation. This Standard is technically identical with and has been reproduced from ISO/IEC/TR 9573:1988.