an> <span class="identifier">bm</span><span class="special">.</span><span class="identifier">left</span><span class="special">;</span>

        <span class="identifier">use_it</span><span class="special">(</span> <span class="identifier">m</span><span class="special">,</span> <span class="string">"one"</span><span class="special">,</span> <span class="number">1</span> <span class="special">);</span>
    <span class="special">}</span>

    <span class="comment">// Reverse standard map</span>
    <span class=