http://www.youtube.com/watch?v=AJWtLf4-WWs

docs/css.html

@@ -2769,7 +2769,7 @@ For example, <code>&lt;section&gt;</code> should be wrapped as inline.
     </table>
   </div>
   <p>So, for extra small (<code>xs</code>) screens for example, the available <code>.visible-*-*</code> classes are: <code>.visible-xs-block</code>, <code>.visible-xs-inline</code>, and <code>.visible-xs-inline-block</code>.</p>
-  <p>The classes <code>.visible-xs</code>, <code>.visible-sm</code>, <code>.visible-md</code>, and <code>.visible-lg</code> also exist, but are <strong>deprecated</strong> as of v3.2. They are approximately equivalent to <code>.visible-*-block</code>, except with additional special cases for toggling <code>&lt;table&gt;</code>-related elements.</p>
+  <p>The classes <code>.visible-xs</code>, <code>.visible-sm</code>, <code>.visible-md</code>, and <code>.visible-lg</code> also exist, but are <strong>deprecated as of v3.2</strong>. They are approximately equivalent to <code>.visible-*-block</code>, except with additional special cases for toggling <code>&lt;table&gt;</code>-related elements.</p>
 
   <h2 id="responsive-utilities-print">Print classes</h2>
   <p>Similar to the regular responsive classes, use these for toggling content for print.</p>