riot-web/docs/labs.md

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# Labs features
If Labs is enabled in the [Element config](config.md), you can enable some of these features by going
to `Settings->Labs`. This list is non-exhaustive and subject to change, chat in
[#element-web:matrix.org](https://matrix.to/#/#element-web:matrix.org) for more information.
**Be warned! Labs features are not finalised, they may be fragile, they may change, they may be
dropped. Ask in the room if you are unclear about any details here.**
## Matrix Spaces [MSC1772](https://github.com/matrix-org/matrix-doc/pull/1772) support (`feature_spaces`)
Enables showing, using, creating, and managing spaces. Create Spaces from the all new Space Panel (to left of Room List).
Incompatible with (will disable) `feature_custom_tags`, `feature_communities_v2_prototypes` and stable Communities/Groups support.
Still in heavy development.
## Render LaTeX maths in messages (`feature_latex_maths`)
Enables rendering of LaTeX maths in messages using [KaTeX](https://katex.org/). LaTeX between single dollar-signs is interpreted as inline maths and double dollar-signs as display maths (i.e. centred on its own line).
## New spinner design (`feature_new_spinner`)
Replaces the old spinner image with a new, svg-based one featuring a sleeker design.
## Message pinning (`feature_pinning`)
Allows you to pin messages in the room. To pin a message, use the 3 dots to the right of the message
and select "Pin".
## Custom status (`feature_custom_status`)
An experimental approach for supporting custom status messages across DMs. To set a status, click on
your avatar next to the message composer.
## Custom tags (`feature_custom_tags`)
An experimental approach for dealing with custom tags. Custom tags will appear in the bottom portion
of the community filter panel.
Setting custom tags is not supported by Element.
## Render simple counters in room header (`feature_state_counters`)
Allows rendering of labelled counters above the message list.
Once enabled, send a custom state event to a room to set values:
1. In a room, type `/devtools` to bring up the devtools interface
2. Click "Send Custom Event"
3. Toggle from "Event" to "State Event"
4. Set the event type to: `re.jki.counter` and give it a unique key
5. Specify the content in the following format:
```
{
"link": "",
"severity": "normal",
"title": "my counter",
"value": 0
}
```
That's it. Now should see your new counter under the header.
## Multiple integration managers (`feature_many_integration_managers`)
Exposes a way to access all the integration managers known to Element. This is an implementation of [MSC1957](https://github.com/matrix-org/matrix-doc/pull/1957).
## New ways to ignore people (`feature_mjolnir`)
When enabled, a new settings tab appears for users to be able to manage their ban lists.
This is a different kind of ignoring where the ignored user's messages still get rendered,
but are hidden by default.
Ban lists are rooms within Matrix, proposed as [MSC2313](https://github.com/matrix-org/matrix-doc/pull/2313).
[Mjolnir](https://github.com/matrix-org/mjolnir) is a set of moderation tools which support
ban lists.
## Verifications in DMs (`feature_dm_verification`)
An implementation of [MSC2241](https://github.com/matrix-org/matrix-doc/pull/2241). When enabled, verification might not work with devices which don't support MSC2241.
This also includes a new implementation of the user & member info panel, designed to share more code between showing community members & room members. Built on top of this new panel is also a new UX for verification from the member panel.
The setting will be removed in a future release, enabling it non-optionally for
all users.
## Bridge info tab (`feature_bridge_state`)
Adds a "Bridge Info" tab to the Room Settings dialog, if a compatible bridge is
present in the room. The Bridge info tab pulls information from the `m.bridge` state event ([MSC2346](https://github.com/matrix-org/matrix-doc/pull/2346)). Since the feature is based upon a MSC, most
bridges are not expected to be compatible, and users should not rely on this
tab as the single source of truth just yet.
## Presence indicator in room list (`feature_presence_in_room_list`)
This adds a presence indicator in the room list next to DM rooms where the other
person is online.
## Custom themes (`feature_custom_themes`)
Custom themes are possible through Element's [theme support](./theming.md), though
normally these themes need to be defined in the config for Element. This labs flag
adds an ability for end users to add themes themselves by using a URL to the JSON
theme definition.
For some sample themes, check out [aaronraimist/element-themes](https://github.com/aaronraimist/element-themes).
## Message preview tweaks
To enable message previews for reactions in all rooms, enable `feature_roomlist_preview_reactions_all`.
To enable message previews for reactions in DMs, enable `feature_roomlist_preview_reactions_dms`, ignored when it is enabled for all rooms.
## Communities v2 prototyping (`feature_communities_v2_prototypes`) [In Development]
**This is a highly experimental implementation for parts of the communities v2 experience.** It does not
represent what communities v2 will look/feel like and can/will change without notice. Due to the early
stages this feature is in and the requirement for a compatible homeserver, we will not be accepting issues
or feedback for this functionality at this time.
## Dehydrated devices (`feature_dehydration`)
Allows users to receive encrypted messages by creating a device that is stored
encrypted on the server, as described in [MSC2697](https://github.com/matrix-org/matrix-doc/pull/2697).