1     Definition
 2    
Description of the service
        2.1     General description
        2.2     Specific terminology
        2.3     Applications
 3    
Procedures
 4    
Network aspects
 5    
Charging considerations
 6    
Terminals
 7    
Quality of Service
 8    
Interoperability
        8.1     Interoperability with other telematic services
        8.2     Interoperability between videotex systems