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Signed-off-by: Joas Schilling <coding@schilljs.com>

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+---
+title: Capabilities
+---
+
+## 3.0 (Initial Talk release)
+* `audio` - audio is supported
+* `video` - video + screensharing is supported
+* `chat` - simple text chat is supported, superseded by `chat-v2`
+
+## 3.1
+* `guest-signaling` - Guests can do signaling via api endpoints
+* `empty-group-room` - Group conversations can be created without inviting a Nextcloud user group by default
+
+## 3.2
+* `guest-display-names` - Display names of guests are stored in the database, can be set via API (not WebRTC only) and are used on returned comments/participants/etc.
+* `multi-room-users` - Users can be in multiple conversations at the same time now, therefor signaling now also requires the conversation token on the URL.
+* `chat-v2` - Chat messages are now [Rich Object Strings](https://github.com/nextcloud/server/issues/1706) and pagination is available, the previous `chat` is not available anymore.
+
+## 4.0
+* `favorites` - Conversations can be marked as favorites which will pin them to the top of the conversation list.
+* `last-room-activity` - Conversations have the `lastActivity` attribute and should be sorted by that instead of the last ping of the user.
+* `no-ping` - The ping endpoint has been removed. Ping is updated with a call to fetch the signaling or chat messages instead.
+* `system-messages` - Chat messages have a `systemMessage` attribute and can be generated by the system
+* `mention-flag` - The conversation list populates the boolean `unreadMention` when the user was mentioned since their last visit
+* `in-call-flags` - A new flag `participantFlags` has been introduced and is replacing the `participantInCall` boolean.
+
+## 5.0
+* `invite-by-mail` - *Replaced by `invite-groups-and-mails`* Guests can be invited with their email address
+* `notification-levels` - Users can select when they want to be notified in conversations
+* `invite-groups-and-mails` - Groups can be added to existing conversations via the add participant endpoint
+
+## 6.0
+* `locked-one-to-one-rooms` - One-to-one conversations are now locked to the users. Neither guests nor other participants can be added, so the options to do that should be hidden as well. Also a user can only leave a one-to-one conversation (not delete). It will be deleted when the other participant left too. If the other participant posts a new chat message or starts a call, the left-participant will be re-added.
+* `read-only-rooms` - Conversations can be in `read-only` mode which means people can not do calls or write chat messages.