></code>
        is the expression involving the operands and <code class="computeroutput"><span class="identifier">composite</span><span class="special">-</span><span class="identifier">attribute</span></code>
        is the resulting attribute type of the composite expression.
      </p>
<p>
        For instance:
      </p>
<pre class="programlisting"><span class="identifier">a</span><span class="special">:</span> <span class="identifier">A</span><span class="special">,</span> <span class="identifier">b</