Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Distinguishing between identities
6 Identities
Annex A (informative) - Invariant Character Set of ISO/IEC 646
Annex B (informative) - Unique identities overview
Annex C (informative) - Identity constructs
Annex D (informative) - Identities on different levels
Bibliography