unlike `my-function` this function returns the value as a string.
  ``</span>
  [<span class="mdzsyn-symbol">x</span>]
  (<span class="mdzsyn-coresym">string</span> (<span class="mdzsyn-coresym">+</span> <span class="mdzsyn-number">3</span> <span class="mdzsyn-symbol">x</span>)))</code></pre><h2 id="Formatting-with-Markdown">Formatting with Markdown
</h2>
<p>Docstrings are typically read in a plaintext environment. Formatting systems
like Markdown are a natural fit for these situations.
</p>
<p>Janet's buil