ndoza-code">cond</code> can be used for making an if-else chain, where using
just raw <code class="mendoza-code">if</code> forms would result in many parentheses. <code class="mendoza-code">case</code> is
similar to <code class="mendoza-code">switch</code> in C without fall-through, or <code class="mendoza-code">case</code> in some
Lisps, though simpler.  <code class="mendoza-code">when</code> is like <code class="mendoza-code">if</code>, but returns <code class="mendoza-code">nil</code> if
the condition ev