XEP-0045 Clarify usage of presence stanzas when removing a non-member…

… from a members-only room

xep-0045.xml

@@ -56,6 +56,7 @@
         <li>Explicitly disallow Ban List modifications that clash with 'Banning a User' conditions.</li>
         <li>Status code purpose no longer hints that recipient is the affected user</li>
         <li>Improved 'Service Removes Non-Member' example.</li>
+        <li>Clarify usage of presence stanzas when removing a non-member from a members-only room.</li>
       </ul>
     </remark>
   </revision>
@@ -3465,6 +3466,7 @@
 
 [ ... ]
 ]]></example>
+    <p>As there is no point in time where a non-member user must be in a members-only room, the service SHOULD NOT send both a de-affiliation presence (without a 'type' attribute) followed by room-removal presence (of type 'unavailable'). Instead, it SHOULD only send the latter of the two.</p>
   </section2>
 
   <section2 topic='Modifying the Member List' anchor='modifymember'>