How scriptdef handles namespaces in element types.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@415841 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/OptionalTasks/scriptdef.html

@@ -135,7 +135,9 @@ more information on writing scripts, please refer to the
     <td valign="top">type</td>
     <td valign="top">This is the name of an Ant task or type which is to
         be used when this element is to be created. This is an alternative
-        to specifying the class name directly</td>
+        to specifying the class name directly. If the type is in a namespace,
+        the URI and a : must be prefixed to the type. For example
+        <code>type="antlib:example.org:newtype"</code></td>
     <td valign="top" align="center">No</td>
   </tr>
 </table>