body&gt;</span>
<span class="x">        </span><span class="cp">&lt;%</span><span class="nb">block</span><span class="cp">&gt;</span><span class="x"></span>
<span class="x">            this is a block.</span>
<span class="x">        </span><span class="cp">&lt;/%</span><span class="nb">block</span><span class="cp">&gt;</span><span class="x"></span>
<span class="x">    &lt;/body&gt;</span>
<span class="x">&lt;/html&gt;</span></pre></div>
</div>
<p>In the above example, we define a simple block.  The block re