ent,
  pointer: {
    DOM: {x:pointer_x, y:pointer_y},
    canvas: {x:canvas_x, y:canvas_y}
    }
  },
  previousSelection: {
    nodes: [Array of previously selected nodeIds],
    edges: [Array of previously selected edgeIds]
  }
}
</pre>
                </td>
            </tr>
            <tr><td id="event_deselectEdge">deselectEdge</td>
                <td>same as <code>deselectNode</code>.</td>
                <td>Fired when a edge (or edges) has (or have) been deselected by the user. The previous selec