an class="id">cellularspace</span>, <span class="reserved">function</span>(<span class="id">cell</span>)
    <span class="id">cell</span>.<span class="id">water</span> = <span class="id">cell</span>.<span class="id">water</span> + <span class="number">1</span>
<span class="reserved">end</span>)

<span class="id">forEachCell</span>(<span class="id">cellularspace</span>, <span class="reserved">function</span>(<span class="id">cell</span>, <span class="id">i</span>)
    <span class="id">print</span>(<span clas