The following table is has been used to initialize the properties registry.
+------------------+------------+----------------------------+ | Property | Status | Reference | +------------------+------------+----------------------------+ | CALSCALE | Current | RFC 5545, Section 3.7.1 | | METHOD | Current | RFC 5545, Section 3.7.2 | | | | | | PRODID | Current | RFC 5545, Section 3.7.3 | | | | | | VERSION | Current | RFC 5545, Section 3.7.4 | | | | | | ATTACH | Current | RFC 5545, Section 3.8.1.1 | | | | | | CATEGORIES | Current | RFC 5545, Section 3.8.1.2 | | | | | | CLASS | Current | RFC 5545, Section 3.8.1.3 | | | | | | COMMENT | Current | RFC 5545, Section 3.8.1.4 | | | | | | DESCRIPTION | Current | RFC 5545, Section 3.8.1.5 | | | | | | GEO | Current | RFC 5545, Section 3.8.1.6 | | | | | | LOCATION | Current | RFC 5545, Section 3.8.1.7 | | | | | | PERCENT-COMPLETE | Current | RFC 5545, Section 3.8.1.8 | | | | | | PRIORITY | Current | RFC 5545, Section 3.8.1.9 | | | | | | RESOURCES | Current | RFC 5545, Section 3.8.1.10 | | | | | | STATUS | Current | RFC 5545, Section 3.8.1.11 | | | | | | SUMMARY | Current | RFC 5545, Section 3.8.1.12 | | | | | | COMPLETED | Current | RFC 5545, Section 3.8.2.1 | | | | | | DTEND | Current | RFC 5545, Section 3.8.2.2 | | | | | | DUE | Current | RFC 5545, Section 3.8.2.3 | | | | | | DTSTART | Current | RFC 5545, Section 3.8.2.4 | | | | | | DURATION | Current | RFC 5545, Section 3.8.2.5 | | | | | | FREEBUSY | Current | RFC 5545, Section 3.8.2.6 | | | | | | TRANSP | Current | RFC 5545, Section 3.8.2.7 | | | | | | TZID | Current | RFC 5545, Section 3.8.3.1 | | | | | | TZNAME | Current | RFC 5545, Section 3.8.3.2 | | | | | | TZOFFSETFROM | Current | RFC 5545, Section 3.8.3.3 | | | | | | TZOFFSETTO | Current | RFC 5545, Section 3.8.3.4 | | | | | | TZURL | Current | RFC 5545, Section 3.8.3.5 | | | | | | ATTENDEE | Current | RFC 5545, Section 3.8.4.1 | | | | | | CONTACT | Current | RFC 5545, Section 3.8.4.2 | | | | | | ORGANIZER | Current | RFC 5545, Section 3.8.4.3 | | | | | | RECURRENCE-ID | Current | RFC 5545, Section 3.8.4.4 | | | | | | RELATED-TO | Current | RFC 5545, Section 3.8.4.5 | | | | | | URL | Current | RFC 5545, Section 3.8.4.6 | | | | | | UID | Current | RFC 5545, Section 3.8.4.7 | | | | | | EXDATE | Current | RFC 5545, Section 3.8.5.1 | | | | | | EXRULE | Deprecated | [RFC2445], Section 4.8.5.2 | | | | | | RDATE | Current | RFC 5545, Section 3.8.5.2 | | | | | | RRULE | Current | RFC 5545, Section 3.8.5.3 | | | | | | ACTION | Current | RFC 5545, Section 3.8.6.1 | | | | | | REPEAT | Current | RFC 5545, Section 3.8.6.2 | | | | | | TRIGGER | Current | RFC 5545, Section 3.8.6.3 | | | | | | CREATED | Current | RFC 5545, Section 3.8.7.1 | | | | | | DTSTAMP | Current | RFC 5545, Section 3.8.7.2 | | | | | | LAST-MODIFIED | Current | RFC 5545, Section 3.8.7.3 | | | | | | SEQUENCE | Current | RFC 5545, Section 3.8.7.4 | | | | | | REQUEST-STATUS | Current | RFC 5545, Section 3.8.8.3 | +------------------+------------+----------------------------+