it.</p></dd>

<dt>Children</dt>
<dd><p>The children of a BNGReference object are the grid squares
at the next lower (finer) resolution level that are contained within the
current reference. For example, the children of a 10km grid square
reference would be all the 5km grid squares that it contains.</p></dd>


</dl></div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r