econd way to create a scope is to create a closure.  The <code class="mendoza-code">fn</code> special
form also introduces a scope just like the <code class="mendoza-code">do</code> special form.
</p>
<p>There is another built in macro, <code class="mendoza-code">let</code>, that does multiple <code class="mendoza-code">def</code>s at
once, and then introduces a scope.  <code class="mendoza-code">let</code> is a wrapper around a combination
of <code class="mendoza-code">def</code>s and <code class="mendoza-