Tweak to Container

Author: jsmorley

source/manual/meters/general-options/container.html

@@ -49,7 +49,7 @@ <h2 id="Usage">Usage Notes</h2>
 
 <ul>
 <li>Any meter type can be a container and any meter type can be content.</li>
-<li>Containers may not be "nested".</li>
+<li>Containers may not be "nested". I.E. A meter may not be a container and be in a container.</li>
 </ul>
 
 <h2 id="Examples">Examples</h2>