diff --git a/master.html b/master.html
index 576489c7..93672362 100644
--- a/master.html
+++ b/master.html
@@ -1025,6 +1025,8 @@ and write their own collections under the path <em>/USERNAME/</em>.</p>
 <p>(New since 3.1.9)</p>
 <p>Global control of permission to delete complete collection (default:
 True)</p>
+<p>If False it can be permitted by permissions per section with: D If
+True it can be forbidden by permissions per section with: d</p>
 </section>
 </section>
 <section class="level4" id="storage-1">
@@ -1365,6 +1367,10 @@ expensive search requests)</li>
 <li><strong>W:</strong> write collections (excluding address books and
 calendars)</li>
 <li><strong>w:</strong> write address book and calendar collections</li>
+<li><strong>D:</strong> permit delete of collection in case
+permit_delete_collection=False</li>
+<li><strong>d:</strong> forbid delete of collection in case
+permit_delete_collection=True</li>
 </ul>
 </section>
 <section class="level3" id="storage-2">