1 Scope
1.1 Objective
1.2 Application
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 General rules
7 Organization of specification and Description Language specifications
8 Structural concepts
9 Agents
10 Communication
11 Behaviour
12 Data
12.1 Data definitions
12.2 Use of data
12.3 Active use of data