3" id=C5_L53></a><a href="#C5_L54" id=C5_L54></a><a href="#C5_L55" id=C5_L55></a></span></code></pre>
<p>We'll learn about the purposes of these files and folders as we go. For now, just know that we'll spend most of our time working within the <code>app</code> folder.</p>
</section>
<h2 id="toc_starting-and-stopping-the-development-server">Starting and Stopping the Development Server <a href="#toc_starting-and-stopping-the-development-server"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
 