ANY
VAGENDA
VALARM
VCALENDAR
VCAR
VCOMMAND
VEVENT
VFREEBUSY
VJOURNAL
VQUERY
VSCHEDULE
VTIMEZONE
VTODO
X
XAUDIOALARM
XDAYLIGHTSAVINGSTIME
XDISPLAYALARM
XEMAILALARM
XLICINVALID
XMIMEPART
XPROCEDUREALARM
XSTANDARDTIME