led. The general syntax is:
      </p>
<pre class="programlisting"><span class="identifier">with</span><span class="special">&lt;</span><span class="identifier">tag</span><span class="special">&gt;(</span><span class="identifier">data</span><span class="special">)[</span><span class="identifier">p</span><span class="special">]</span>
</pre>
<p>
        For our particular example, we use to inject the <code class="computeroutput"><span class="identifier">position_cache</span></code>
        into the parse fo