;</span><span class="cp">&gt;</span><span class="x"></span>
<span class="x">    hello world</span>
<span class="cp">&lt;/%</span><span class="nb">def</span><span class="cp">&gt;</span><span class="x"></span></pre></div>
</div>
<p>To invoke the <code class="docutils literal notranslate"><span class="pre">&lt;%def&gt;</span></code>, it is normally called as an expression:</p>
<div class="highlight-mako notranslate"><div class="highlight"><pre><span></span><span class="x">the def:  </span><span class="cp">${</