Using the ShowMarkZone property the mark zones can be shown:
The ShowMarkZoneEnum type supports the following values:


| Name | Value | Description | |||
| exHideMarkZones | 0 | No mark zone is shown. | |||
| exShowMarkZonesBack | 1 | The mark zones are shown on the background. | |||
| exShowMarkZonesFront | 2 | The mark zones are displayed on front. | |||
| exShowMarkZonesSemi | 3 | The schedule shows the mark zones using a semi-transarent color. |