# Scheduling of calendar events _(event)_ iCalendar specifies a file format for events. CalDAV specifices how to manage events. iCalendar spec is relatively simple, and widely supported. CalDAV spec is very big and complex, however, and no system supports all of it. This system supports a limited subset of CalDAV tested to work with Apple and Mozilla clients. Currently non-shared calendars are supported, without iTIP or iMIP. It is possible to extend our current system with iTIP/iMIP support, but that has not yet been explored. Technically, the CalDAV service uses [Radicale]. [Radicale]: https://radicale.org/ ## Invites Triggering and tracking (semi-)automated invitations to events (i.e. CalDAV extensions [iTIP][] and [iMIP][]) is currently not supported. [iTIP]: "iTIP - specification on handling participant invites for CalDAV events" [iMIP]: "iMIP - specification on distributing iTIP invites via email"