tion is
                    the
                    list of nodes and edges that were selected before the last user event.
                </td>
            </tr>
            <tr><td id="event_dragStart">dragStart</td>
                <td>same as <code>click</code>.</td>
                <td>Fired when starting a drag.</td>
            </tr>
            <tr><td id="event_dragging">dragging</td>
                <td>same as <code>click</code>.</td>
                <td>Fired when dragging node(s) or the view.</