p>
        parses <code class="computeroutput"><span class="identifier">a</span></code> but not <code class="computeroutput"><span class="identifier">b</span></code>. Its attribute is just <code class="computeroutput"><span class="identifier">A</span></code>; the attribute of <code class="computeroutput"><span class="identifier">a</span></code>.
        <code class="computeroutput"><span class="identifier">b</span></code>'s attribute is ignored.
        Hence, the attribute of:
      </p>
<pre class="progra