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+# `plan.yml`
+
+`data/plan.yml` contains the data definitions for how the conference Matrix space will be laid out.
+
+## `homeserver`
+
+The Matrix homeserver to create the conference space on.
+
+## `jitsiDomain`
+
+The Jitsi domain that will be used for social Jitsi rooms.
+
+## `defaultRoomVersion`
+
+The default [Matrix room version](https://spec.matrix.org/latest/rooms/) to use when creating rooms.
+
+## `timeZone`
+
+TODO
+
+## `avatars`
+
+TODO
+
+## `inheritUserPowerLevels`
+
+TODO
+
+## `powerLevels`
+
+Contains two sublists, `events` and `users`.
+
+### `events`
+
+TODO
+
+### `users`
+
+A mapping of Matrix username (`@user:domain.tld`) to the power level that user will be set to in every conference room.
+
+The special name `steward` refers to the bot itself and is required to be set to `100`. Do not set any other user to power level 100; you will have a Very Bad Time™.
+
+## `steward`
+
+Information about the bot Matrix user. Contains three keys:
+
+* `id`: the Matrix username (`@user:domain.tld`) for the bot to use
+* `name`: the profile name the bot will set
+* `avatar`: TODO
+
+## `rooms`
+
+TODO
+
+## `sessions`
+
+Contains data on how to retrieve and process events from OSEM.
+
+### `conference`
+
+The OSEM conference ID to retrieve sessions from.
+
+### `redirects`
+
+TODO
+
+### `prefix`
+
+The prefix for all Matrix OSEM-event-room addresses.
+
+### `suffixes`
+
+Mapping from a numerical OSEM event ID (you will need to quote the number, e.g., `"1337"`) to the suffix that will be appended to `prefix` to create the complete event room Matrix address.
+
+### `topic`
+
+Matrix room topic.
+
+### `intro`
+
+Introduction message that will be posted in every Matrix event room.
+
+Supports Markdown and the following special tokens:
+
+* `$URL`: the OSEM event URL
+* TODO