INCITS/ISO 8879 : 1986

0 Introduction
   0.1 Background
   0.2 Objectives
   0.3 Organization
1 Scope
2 Field of Application
3 References
4 Definitions
5 Notation
   5.1 Syntactic Tokens
   5.2 Ordering and Selection Symbols
6 Entity Structure
   6.1 SGML Document
   6.2 SGML Entities
   6.3 Non-SGML Data Entity
7 Element Structure
   7.1 Prolog
   7.2 Document Element
   7.3 Element
   7.4 Start-tag
   7.5 End-tag
   7.6 Content
   7.7 Document Type Specification
   7.8 Generic Identifier (GI) Specification
   7.9 Attribute Specification List
8 Processing Instruction
   8.1 Quantities
9 Common Constructs
   9.1 Replaceable Character Data
   9.2 Character Data
   9.3 Name
   9.4 Entity References
   9.5 Character Reference
   9.6 Delimiter Recognition
   9.7 Markup Suppression
   9.8 Capacity
10 Markup Declarations: General
   10.1 Parts of Declarations
   10.2 Formal Public Identifier
   10.3 Comment Declaration
   10.4 Marked Section Declaration
   10.5 Entity Declaration
11 Markup Declarations: Document Type Definition
   11.1 Document Type Declaration
   11.2 Element Declaration
   11.3 Attribute Definition List Declaration
   11.4 Notation Declaration
   11.5 Short Reference Mapping Declaration
   11.6 Short Reference Use Declaration
12 Markup Declarations: Link Process Definition
   12.1 Link Type Declaration
   12.2 Link Set Declaration
   12.3 Link Set Use Declaration
13 SGML Declaration
   13.1 Document Character Set
   13.2 Capacity Set
   13.3 Concrete Syntax Scope
   13.4 Concrete Syntax
   13.5 Feature Use
   13.6 Application-specific Information
14 Reference and Core Concrete Syntaxes
15 Conformance
   15.1 Conforming SGML Document
   15.2 Conforming SGML Application
   15.3 Conforming SGML System
   15.4 Validating SGML Parser
   15.5 Documentation Requirements
   15.6 System Declaration
Annexes
A Introduction to Generalized Markup
   A.1 The Markup Process
   A.2 Descriptive Markup
   A.3 Rigorous Markup
   A.4 Conclusion
   A.5 Acknowledgments
   A.6 Bibliography
B Basic Concepts
   B.1 Documents, Document Type Definitions, and Procedures
   B.2 Markup
   B.3 Distinguishing Markup from Text
   B.4 Document Structure
   B.5 Attributes
   B.6 Entities
   B.7 Characters
   B.8 Marked Sections
   B.9 Unique Identifier Attributes
   B.10 Content Reference Attributes
   B.11 Content Model Exceptions
   B.12 Document Type Declaration
   8.13 Data Content
   8.14 Customizing
   B.15 Conformance
C Additional Concepts
   C.1 Markup Minimization Features
   C.2 LINK Features: SIMPLE, IMPLICIT, and EXPLICIT
   C.3 Other Features
D Public Text
   D.1 Element Sets
   D.2 Data Content Notations
   D.3 Variant Concrete Syntaxes
   D.4 Entity Sets
E Application Examples
   E.1 Document Type Definition
   E.2 Computer Graphics Metafile
   E.3 Device-Independent Code Extension
F Implementation Considerations
   F.1 A Model of SGML Parsing
   F.2 Initialization
   F.3 Dynamic Procedure Mapping
   F.4 Error Handling
G Conformance Classification and Certification
   G.1 Classification Code
   G.2 Certification Considerations
H Theoretical Basis for the SGML Content Model
   H.1 Model Group Notation
   H.2 Application of Automata Theory
   H.3 Divergence from Automata Theory
I Nonconforming Variations
   I.1 Fixed-length Generic Identifiers
   I.2 Single Delimiter

Describes an abstract syntax known as the Standard Generalized Markup Language (SGML). The language expresses the description of a document's structure and other attributes, as well as other information that makes the markup interpretable.