">Returns: none</td>
                <td>Opens the cluster, releases the contained nodes and edges, removing the cluster node and cluster
                    edges. The options object is optional and currently supports one option, releaseFunction, which is a function that can be used to manually
                    position the nodes after the cluster is opened. <br>
<pre class="code">
function releaseFunction (clusterPosition, containedNodesPositions) {
    var newPositions = {};
    // clusterPosition = {