diff --git a/html52/implementation-report.html b/html52/implementation-report.html
index 5526ca2..f1b9113 100644
--- a/html52/implementation-report.html
+++ b/html52/implementation-report.html
@@ -362,12 +362,6 @@ <h2>Removed features</h2>
   <td>Removed</td>
 </tr>
 
-<tr>
-<td>Remove the allow-presentation sandboxing flag for the <code>sandbox</code> attribute of the <code>iframe</code> element</td>
-<td class="pass">Y</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td>
-<td>Removed</td>
-</tr>
-
 <tr>
 <td>Remove <code>datetime</code> from type of <code>input</code></td>
 <td class="fail">N</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td>
@@ -375,6 +369,21 @@ <h2>Removed features</h2>
 </tr>
 </table>
 
+<h2>One implementation</h2>
+
+<table>
+<tr>
+  <th></th><th>Blink</th><th>Firefox - Gecko</th><th>Edge</th><th>Internet Explorer</th><th>Safari - Webkit</th><th>Notes</th>
+</tr>
+
+<tr>
+<td>allow-presentation sandboxing flag for the <code>sandbox</code> attribute of the <code>iframe</code> element</td>
+<td class="pass">Y</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td><td class="fail">N</td>
+<td>The <a href="https://www.w3.org/TR/presentation-api/">Presentation API</a> is in CR, so further interoperability is expected, and a warning added to the HTML spec in the meantime</td>
+</tr>
+</table>
+
+
 </main>
 </body>
 </html>