Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Role of a datum system
6 General concepts
7 Graphical language
Annex A (normative) - Association for datums
Annex B (informative) - Invariance classes
Annex C (informative) - Indication and meaning
        of datum systems for some examples
Annex D (normative) - Associated feature established
        from a thread or a gear
Annex E (informative) - Examples of a datum system
        or a common datum established with contacting
        features
Annex F (informative) - Filter symbols and attached
        nesting index
Annex G (informative) - Some basic examples of datum
Annex H (normative) - Relations and dimensions of
        graphical symbols
Annex I (informative) - Former practice
Annex J (informative) - Relationship to the GPS matrix model
Bibliography