diff --git a/templates/pages/packet.html b/templates/pages/packet.html
index 83c616f..3b577dc 100644
--- a/templates/pages/packet.html
+++ b/templates/pages/packet.html
@@ -135,6 +135,13 @@
         </tr>
     </thead>
 
+    <tr>
+        <td><code>0x00</code></td>
+        <td><code>0xFF</code></td>
+        <td>None</td>
+        <td></td>
+        <td></td>
+    </tr>
     <tr>
         <td><code>0x20</code></td>
         <td><code>0xDF</code></td>
@@ -171,6 +178,9 @@
         <td></td>
     </tr>
 </table>
+<p>Data is assumed by default to be in ISO 8859 encoding. That is, for encodings <code>0x00</code> and
+    <code>0x40</code>, no transformation is performed on the binary data to produce readable text.</p>
+<p>ASCII encoding is true 7-bit ASCII, with the 8th bit always set to 0. This is validated.</p>
 <details>
     <summary>Source code details</summary>
     <p>The full table for these values can be found in libavs.</p>