why <li> is kept open without a </li> html nested lists : <p>I posted a question and everyone said things that i was not really asking 
I will try to be more clear next time.</p>

<p>I was told that when nesting lists you must leave a <code>&lt;li&gt;</code> without a <code>&lt;/li&gt;</code></p>

<p>The &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; point to the tags.</p>

<p>That is what i need someone to explain... I was told this is necessary and i can't find a resource that tells me why.</p>

<pre><code>&lt;ul&gt;
&lt;li&gt; Louis &lt;/li&gt;
&lt;li&gt; Louis &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;
&lt;ol&gt;
&lt;li&gt; Louis &lt;/li&gt;
&lt;li&gt; Louis &lt;/li&gt;
&lt;ul&gt; 
&lt;li&gt; Louis &lt;/li&gt;
&lt;li&gt; Louis &lt;/li&gt;
&lt;ol&gt;
&lt;li&gt; Louis &lt;/li&gt;
 &lt;li&gt; Louis &lt;/li&gt;
&lt;/ol&gt;
&lt;/ul&gt;
&lt;/ol&gt;
&lt;/li&gt; &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;
&lt;/ul&gt;
</code></pre>
