Provide a grouping of component properties that describe either a request for free/busy time, describe a response to a request for free/busy time or describe a published set of busy time.
Provide a grouping of calendar properties that describe a to-do.
Provide a grouping of component properties that defines a time zone.
Provide a grouping of component properties that describe an event.
Provide a grouping of component properties that describe a journal entry.
subject to change with notice to www-rdf-calendar@w3.org