3.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Add addons</h2>
<p>You can extend System Designer by composing other systems with its systems. In that case, these systems are called <strong>addons</strong>.</p>
<p>To extend System Designer:</p>
<ul>
<li>copy and paste a system into the <a href="https://github.com/design-first/system-designer/tree/master/addons">/addons</a> directory and</li>
<li>bu