eters are taken from the exterior environment at runtime.</p>
</div>

<div class="api_docstring">
  <p class="api">[macro]
<code class='api'><span class='api-name'>bind-custom-vars</span>
(<span class='lambda-kwd'>&amp;rest</span> <span class='arg-name'>customizations</span>)
<span class='lambda-kwd'>&amp;body</span>
<span class='arg-name'>body</span>
</code>
  </p>
<p class="docstring">Execute <code class="arg-name">body</code> in a dynamic environment where customization parameters are bound as specified 