Classes

1. Available
2. Calendar­Component
3. Daylight
4. Observance
5. Participant
6. Standard
7. V­Alarm
8. V­Availability
9. V­Event
10. V­Free­Busy
11. V­Journal
12. V­Location
13. V­Resource
14. V­Time­Zone
15. V­To­Do
16. V­Venue
17. X­Component