Add a bit more clarification about local type

index.html

@@ -560,11 +560,19 @@ <h4>
           handover request, "`Hs`" for handover select, etc.
         </li>
         <li>
-          NFC Forum <dfn>local type</dfn> that are defined by the NFC Forum or
-          by an application, within the scope of the local context of another
-          record or application and always start with lowercase letter or a
-          number. See <a>Smart poster</a> for an example on how local types are
-          used.
+          <p>
+            NFC Forum <dfn>local type</dfn> that are defined by the NFC Forum or
+            by an application, within the scope of the local context of another
+            record or application and always start with lowercase letter or a
+            number. See <a>Smart poster</a> for an example on how local types are
+            used.
+          </p>
+          <p class=note>
+            A [=local type=] is thus defined in terms of a containing record type,
+            and thus don't need any namespacing. For this reason the same local type
+            name can be used within another record type with different meaning and
+            different payload type.
+          </p>
         </li>
       </ul>
     </div>