. }
    - ...</pre>
</div>

<p>Secondly, create the <code>cartoon.md</code> file in your book <code>Contents/</code> directory. For this new content type it's unnecessary to write content, so leave it empty. <strong>easybook</strong> needs some content for every element of the book. Since <code>cartoon</code> is a custom made type, <strong>easybook</strong> doesn't define a default content for it, so you <strong>must</strong> create the <code>cartoon.md</code> file even if you leve it empty.</p>

<p>Lastly,