de the form do not escape outside of its scope.
</p>
<pre class="mendoza-codeblock"><code data-language="janet">(<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">a</span> <span class="mdzsyn-keyword">:outera</span>)

(<span class="mdzsyn-coresym">do</span>
  (<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">a</span> <span class="mdzsyn-number">1</span>)
  (<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">b</span> <span class="mdzsyn-number">2</span>)
