Update content of files

data/web/corefork.telegram.org/api/forum.html

@@ -90,8 +90,10 @@ To fetch information about one or more topics by their ID, use <a href="/method/
 <p>To send messages to the "General" topic, just use <a href="/method/messages.sendMessage">messages.sendMessage</a> as usual, as if you were writing to a normal supergroup.<br>
 On the other hand, topics with <code>id != 1</code> are just the <a href="/api/threads">message thread</a> of the <a href="/constructor/messageActionTopicCreate">messageActionTopicCreate</a> service message that created that topic.<br>
 This means that topics should be treated similarly to <a href="/api/threads">message threads</a> by the client.<br>
-To send messages to these topics, pass the topic ID to the <code>reply_msg_id</code> parameter of <a href="/method/messages.sendMessage">messages.sendMessage</a>, <a href="/method/messages.sendMedia">messages.sendMedia</a> et cetera.<br>
-Replies to messages within a topic work as usual (simply pass the ID of the message to reply to to <code>reply_msg_id</code>, ignoring the topic ID), however, since <a href="/api/threads">message threads</a> can't have nested message threads, topics (except for the "General" topic) also can't have message threads (so replies to messages within topics won't generate further message threads).  </p>
+To send messages to these topics, pass the topic ID to the <code>reply_msg_id</code> parameter of <a href="/method/messages.sendMessage">messages.sendMessage</a>, <a href="/method/messages.sendMedia">messages.sendMedia</a> et cetera.  </p>
+<p>To reply to messages within a topic, pass the ID of the message to reply to to <code>reply_msg_id</code>, and, unless we're replying to a message in the "General" topic, pass the topic ID to <code>top_msg_id</code>.<br>
+Note that when replying to messages in a topic, the <code>top_msg_id</code> field must contain the topic ID <strong>if and only if</strong> we're replying to messages in <a href="/api/forum#forum-topics">forum topics</a> different from the "General" topic (i.e. <code>reply_to_msg_id</code> is set and <code>reply_to_msg_id != topicID</code> and <code>topicID != 1</code>): this way, if the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.<br>
+Also note that since <a href="/api/threads">message threads</a> can't have nested message threads, topics (except for the "General" topic) also can't have message threads (so replies to messages within topics won't generate further message threads).  </p>
 <p>Topics have a name (<code>title</code>) and an icon: the icon can be a <a href="/api/custom-emoji">custom emoji</a> specified by the <code>icon_emoji_id</code>, or a default chat icon if <code>icon_emoji_id</code> is not set, filled with the color specified in <code>icon_color</code>.<br>
 Topics can be temporarily <code>closed</code>, preventing further messages from being sent to the topic.<br>
 Additionally, (only) the "General" topic may also be <code>hidden</code>.<br>

data/web/corefork.telegram.org/method/messages.requestWebView

@@ -122,7 +122,7 @@
 <tr>
 <td><strong>top_msg_id</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.9?<a href="/type/int">int</a></td>
-<td>If set, the inline message that will be sent by the bot on behalf of the user once the web app interaction is <a href="/method/messages.sendWebViewResultMessage">terminated</a> will be sent to the specified <a href="/api/forum#forum-topics">forum topic</a></td>
+<td>This field must contain the topic ID <strong>only</strong> when replying to messages in <a href="/api/forum#forum-topics">forum topics</a> different from the "General" topic (i.e. <code>reply_to_msg_id</code> is set and <code>reply_to_msg_id != topicID</code> and <code>topicID != 1</code>). <br>If the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.</td>
 </tr>
 <tr>
 <td><strong>send_as</strong></td>

data/web/corefork.telegram.org/method/messages.sendInlineBotResult

@@ -112,7 +112,7 @@
 <tr>
 <td><strong>top_msg_id</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.9?<a href="/type/int">int</a></td>
-<td>If set, sends the message to the specified <a href="/api/forum#forum-topics">forum topic</a></td>
+<td>This field must contain the topic ID <strong>only</strong> when replying to messages in <a href="/api/forum#forum-topics">forum topics</a> different from the "General" topic (i.e. <code>reply_to_msg_id</code> is set and <code>reply_to_msg_id != topicID</code> and <code>topicID != 1</code>). <br>If the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.</td>
 </tr>
 <tr>
 <td><strong>random_id</strong></td>

data/web/corefork.telegram.org/method/messages.sendMedia

@@ -117,7 +117,7 @@
 <tr>
 <td><strong>top_msg_id</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.9?<a href="/type/int">int</a></td>
-<td>This field must contain the topic ID when replying to messages in <a href="/api/forum#forum-topics">forum topics</a> (except for the "General" topic). <br>This parameter should <strong>only</strong> be provided when <em>replying to a message inside of a <a href="/api/forum#forum-topics">forum topic</a></em>. If the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.</td>
+<td>This field must contain the topic ID <strong>only</strong> when replying to messages in <a href="/api/forum#forum-topics">forum topics</a> different from the "General" topic (i.e. <code>reply_to_msg_id</code> is set and <code>reply_to_msg_id != topicID</code> and <code>topicID != 1</code>). <br>If the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.</td>
 </tr>
 <tr>
 <td><strong>media</strong></td>

data/web/corefork.telegram.org/method/messages.sendMessage

@@ -122,7 +122,7 @@
 <tr>
 <td><strong>top_msg_id</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.9?<a href="/type/int">int</a></td>
-<td>If set, sends the message to the specified <a href="/api/forum#forum-topics">forum topic</a></td>
+<td>This field must contain the topic ID <strong>only</strong> when replying to messages in <a href="/api/forum#forum-topics">forum topics</a> different from the "General" topic (i.e. <code>reply_to_msg_id</code> is set and <code>reply_to_msg_id != topicID</code> and <code>topicID != 1</code>). <br>If the replied-to message is deleted before the method finishes execution, the value in this field will be used to send the message to the correct topic, instead of the "General" topic.</td>
 </tr>
 <tr>
 <td><strong>message</strong></td>