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Add a 'Redactions' section.
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@ -778,6 +778,23 @@ There are several APIs provided to ``GET`` events for a room:
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Example:
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TODO
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Redactions
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----------
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Since events are extensible it is possible for malicious users and/or servers to add
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keys that are, for example offensive or illegal. Since some events cannot be simply
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deleted, e.g. membership events, we instead 'redact' events. This involves removing
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all keys from an event that are not required by the protocol. This stripped down
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event is thereafter returned anytime a client or remote server requests it.
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Events that have been redacted include a ``redacted_because`` key whose value is the
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event that caused it to be redacted, which may include a reason.
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Redacting an event cannot be undone, allowing server owners to delete the offending
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content from the databases.
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Currently, only room admins can redact events by sending a ``m.room.redacted`` event,
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but server admins also need to be able to redact events by a similar mechanism.
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Room Events
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===========
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