accepted source</em></li>
</ul>
<p>The format of this tree is easy to work with and to read. Here&#8217;s what the
above tree would look like as a graphic:</p>
<p><img src="images/ast.png" alt="" /></p>
<h2>Where to go from here: An Interpreter</h2>
<p>As nice as the format above is for printing and looking at &#8211; it may be
difficult at times to get the information out of it again. Let&#8217;s look at how
to transform the tree:</p>
<pre class="sh_ruby"><code> 
class SimpleTransform &lt; Parslet::Transfo