INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Trigger message
4.1 General
4.1.1 Viewer interaction
4.1.2 Priority ratings
4.1.3 Character coding
4.1.4 Future compatibility
4.2 Life cycles
4.2.1 Trigger message and event message life cycle
4.2.2 Event message preparation life cycle
4.2.3 Application life cycle
4.3 Syntax of trigger message
4.3.1 General
4.3.2 Trigger text length
4.3.3 Syntax of trigger text
4.3.4 Trigger repetition
Annex A (informative) Recommendations
Annex B (informative) Code of practice
B.1 Time reference
B.2 Modifying triggers
B.3 Trigger expiry
B.4 Countdown values
B.5 Initial state
B.6 Multiple sources
B.7 Receivers not supporting concurrent ApplicationObject
instances
B.8 Receivers supporting concurrent ApplicationObject
instances
B.9 The ICON bitmap
B.10 The use of priority
B.11 Interaction of name and script attributes
B.12 Supporting multiple applications
B.13 Supporting multiple transport layers
B.14 Who is in control
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Bibliography