   <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span></pre></div>
</div>
<p>So in fact the above block has absolutely no effect.  Its usefulness comes when we start
using modifiers.  Such as, we can apply a filter to our block:</p>
<div class="highlight-mako notranslate"><div class="highlight"><pre><span></span><span class="x">&lt;html&gt;</span>
<span class="x">    &lt;body&gt;</span>
<span 