red when stabilization starts. This is also the case when you drag a node and the physics
                    simulation
                    restarts to stabilize again. Stabilization does not neccesarily imply 'without showing'.
                </td>
            <tr><td id="event_stabilizationProgress">stabilizationProgress</td>
                <td>Object</td>
                <td>Fired when a multiple of the <code>updateInterval</code> number of iterations is reached. This only occurs in the 'hidden' stabi