comma.
        </p>
<pre class="programlisting"><span class="identifier">statement</span><span class="special">,</span>
<span class="identifier">statement</span><span class="special">,</span>
<span class="special">(</span>
    <span class="identifier">statement</span><span class="special">,</span>
    <span class="identifier">statement</span>
<span class="special">),</span>
<span class="identifier">statement</span>
</pre>
<p>
          Outside the square brackets, block statements should be grouped. For exa