diff --git a/index.html b/index.html
index 38a7e1a..ab94bc8 100644
--- a/index.html
+++ b/index.html
@@ -764,6 +764,15 @@ <h2>
         </thead>
 
         <tbody>
+          <tr>
+            <td>
+<code>key</code>
+            </td>
+            <td>
+Identifies a key from the DID Document by key id.
+            </td>
+          </tr>
+
         </tbody>
       </table>