<code>check</code>-property to paint them green. In a real world example, you may want to check them for collisions. 
			</p>

			<pre><code class="language-javascript">for(var i=0;i&lt;candidates.length;i=i+1) {
	candidates[i].check = true;
}</code></pre>
			
			<!--p>
				When you deal mostly with static objects, rewriting the whole tree each loop may seems like an overkill. 
			</p>
			<p>
				If you have the urge to update or remove single objects without affecting the whole quadtree, you may