help_docs: Update documentation for editing messages.

Updates various articles related to editing messages (settings,
edit history, etc) for changes in UI, adding undocumented
settings, and cleaning/linking documentation text and headers.

templates/zerver/help/configure-message-editing-and-deletion.md

@@ -14,26 +14,27 @@ is highly configurable. Two things are true under any configuration:
 * Any message can be deleted at any time by an organization administrator.
 
 <div class="centered_table"></div>
-|                                    | Admins   | Members |
+|                                       | Admins   | Members |
-|---                                 |---       |---      |
+|---                                    |---       |---      |
-| Edit your message content          | [1]      | [1]     |
+| Edit your message content             | [1]      | [1]     |
-| Edit others' message content       |          |         |
+| Edit others' message content          |          |         |
-| Edit your message topics           | [1]      | [1]     |
+| Edit your message topics              | [1]      | [1]     |
-| Add a topic to a topicless message | [1]      | [1]     |
+| Add topic to messages without a topic | [1]      | [1]     |
-| Edit others' message topics        | [1]      | [2]     |
+| Edit others' message topics           | [1]      | [2]     |
-| Move topics between streams        | [4]      | [4]     |
+| Move topics between streams           | [3]      | [3]     |
-| Delete your messages               | &#10004; | [3]     |
+| Delete your messages                  | &#10004; | [4]     |
-| Delete others' messages            | &#10004; |         |
+| Delete others' messages               | &#10004; |         |
 
 [1] Controlled by **Allow message editing**.
 
 [2] Controlled by **Who can edit topic of any message**.
 
-[3] Controlled by **Who can delete their own messages**.
+[3] Controlled by **Who can move messages between streams**, in
-
-[4] Controlled by **Who can move messages between streams**, in
 addition to other restrictions on editing topics.
 
+[4] Controlled by **Who can delete their own messages**
+and **Time limit for deleting messages**.
+
 There are a few useful things to understand about the message editing
 settings.
 
@@ -49,31 +50,34 @@ settings.
   in [exports](/help/export-your-organization). Deletion
   permanently (and irretrievably) removes the message from Zulip.
 
-You can access the message editing and deletion settings as follows.
+## Configure message editing and deletion
-
-### Configure message editing and deletion
 
 {start_tabs}
 
 {settings_tab|organization-permissions}
 
-4. Under **Message editing**, configure **Allow message editing**,
+1. Under **Message editing**, configure:
-   **Who can edit topic of any message**, and **Who can delete their own messages**.
+
+    - **Allow message editing**
+    - **Who can edit topic of any message**
+    - **Who can delete their own messages**
+    - **Time limit for deleting messages**
 
 {!save-changes.md!}
 
 {end_tabs}
 
-### Configure who can move topics between streams
+## Configure who can move topics between streams
 
-By default, only organization administrators can move topics between
+You can configure which [roles](/help/roles-and-permissions)
-streams.  You can configure which roles have permission to do so:
+have permission to move topics between streams.
 
 {start_tabs}
 
 {settings_tab|organization-permissions}
 
-2. Under **Message editing**, configure **Who can move messages between streams**.
+1. Under **Message editing**, configure
+   **Who can move messages between streams**.
 
 {!save-changes.md!}
 

templates/zerver/help/include/sidebar_index.md

@@ -179,8 +179,8 @@
 * [Restrict private messages](/help/restrict-private-messages)
 * [Restrict wildcard mentions](/help/restrict-wildcard-mentions)
 * [Block image and link previews](/help/allow-image-link-previews)
+* [Restrict message editing](/help/configure-message-editing-and-deletion)
 * [Disable message edit history](/help/disable-message-edit-history)
-* [Manage editing of old messages](/help/configure-message-editing-and-deletion)
 * [Hide message content in emails](/help/hide-message-content-in-emails)
 * [Message retention policy](/help/message-retention-policy)
 * [Weekly digest emails](/help/digest-emails)

templates/zerver/help/require-topics.md

@@ -1,26 +1,29 @@
 # Require topics in stream messages
 
+Administrators can configure whether stream messages must have a
+specified topic.
+
+## Require topics in stream messages
+
 {!admin-only.md!}
 
-By default, users are not required to specify a topic in stream messages; if
-a user sends a message without a topic, the message's topic is displayed as
-**(no topic)**.
-
-If [message editing](/help/configure-message-editing-and-deletion) is
-enabled, any other user can then edit the topic of messages without a
-topic to set a topic, regardless of the value of the [topic editing
-policy](/help/configure-who-can-edit-topics).
-
-You can instead choose to require a topic for new stream messages.
-
-### Require topics in stream messages
-
 {start_tabs}
 
 {settings_tab|organization-settings}
 
-2. Under **Message feed**, select **Require topics in messages to streams**.
+1. Under **Other settings**, toggle
+   **Require topics in streams messages**.
 
 {!save-changes.md!}
 
 {end_tabs}
+
+## Stream messages without a topic
+
+If a user sends a message without a topic, the message's topic is
+displayed as **(no topic)**.
+
+When [message editing](/help/configure-message-editing-and-deletion)
+is enabled, any user can [add a topic](/help/rename-a-topic)
+to messages without a topic. They can do so regardless of whether
+they can [edit topics in general](/help/configure-who-can-edit-topics).

templates/zerver/help/view-a-messages-edit-history.md

@@ -1,13 +1,26 @@
 # View a message's edit history
 
-By default, users can view the edit history of any edited message. Edited
+Users can view the edit history of any edited or moved message.
-messages have `EDITED` written in gray either above or to the left of the
+
-message.
+Messages with any content edits are labeled **EDITED**, while messages
+that have only been [moved to a new
+stream](/help/move-content-to-another-stream) or
+[topic](/help/move-content-to-another-topic) are labeled **MOVED**.
 
 Organization administrators can
 [disable message edit history](/help/disable-message-edit-history).
 
-### View a message's edit history
+## View a message's edit history
+
+### Via the main message feed
+
+{start_tabs}
+
+1. Click on the message's **EDITED** or **MOVED** label.
+
+{end_tabs}
+
+### Via the message menu (alternate method)
 
 {start_tabs}
 
@@ -17,7 +30,13 @@ Organization administrators can
 
 !!! warn ""
 
-    You will only see **View edit history** in the dropdown menu if
+    You will only see **View edit history** in the dropdown
-    the message has been edited and message edit history is on.
+    menu if the message has been moved or edited, and
+    message edit history is enabled in the organization.
 
 {end_tabs}
+
+## Related articles
+
+* [Restrict message editing](/help/configure-message-editing-and-deletion)
+* [Disable message edit history](/help/disable-message-edit-history)