DIN EN ISO 1101:2017-09

National foreword
National Annex NA (informative) - Bibliography
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Basic concepts
5 Symbols
6 Toleranced features
7 Tolerance zones
8 Geometrical specification indication
9 Supplementary indications
10 Theoretically exact dimensions (TED)
11 Restrictive specifications
12 Projected toleranced feature
13 Intersection planes
14 Orientation planes
15 Direction feature
16 Collection plane
17 Definitions of geometrical specifications
Annex A (informative) - Deprecated and former
        practices
Annex B (informative) - Explicit and implicit rules
        for geometrical tolerance zones
Annex C (informative) - Filters
Annex D (normative) - ISO special specification
        elements for form
Annex E (informative) - Filter details
Annex F (normative) - Relations and dimensions of
        graphical symbols
Annex G (informative) - Relation to the GPS matrix
        model
Bibliography

Specifies the symbol language for geometrical specification of workpieces and the rules for its interpretation.