| Name | Value | Description | |||
| exDisableZoom | 0 | Zooming the chart at runtime is disabled. | |||
| exAlwaysZoom | 1 | The zooming scale is displayed on the overview area. | |||
| exSelectOnRClick | 2 | The user selects a portion of the chart to be zoomed, if the user right clicks the overview area. | |||
| exZoomOnRClick | -1 | The zooming scale is displayed only if the user right clicks the overview area. |