Table of Contents

 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