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Make it clearer

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Erik Johnston 2015-09-04 11:21:14 +01:00
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specification/47_history_visibility.rst
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@ -1,20 +1,19 @@
Room History Visibility
=======================
The visibility of events to users before they joined can be controlled by the
``m.room.history_visibility`` state event.
More specifically, the string value of the content key ``history_visibility``
controls the visibility of events. The valid values are:
Whether a member of a room can see the events that happened in a room from
before they joined the room is controlled by the ``history_visibility`` key
of the ``m.room.history_visibility`` state event. The valid values for
``history_visibility`` are:
- ``shared``
- ``invited``
- ``joined``
By default, ``history_visibility`` is set to ``shared``.
By default if no ``history_visibility`` is set it is assumed to be ``shared``.
The rules governing whether a user is allowed to see an event depend solely on
the state at that event:
the state of the room at that event:
1. If the user was joined, allow.
2. If the user was invited and the ``history_visibility`` was set to