Calendars let you organize, track, and schedule events. Since calendars support the iCalendar (or iCal) standard format for exchanging calendar data over the Internet, they are well-suited for use in distributed collaborative groups.

While you can subscribe to calendars, they do not have versions or renditions. You can edit, move, copy, or link calendars, but you cannot check calendars in or out.

A calendar can be added to the clipboard, and then linked, moved or copied like a folder. A copy of a calendar includes copies of all the original’s descendants. Calendars can only hold events, and only events can be copied in calendars. Events, on the other hand, can be copied in any folder location.