The SU90 offers several different marker types. You can add as many markers as you like. The most common markers can be added using dedicated buttons on the Operating Panel. Other markers are added using the shortcut menu in each view. Each marker is identified with its geographical location.
TipIf you have placed markers on several echoes to make them objects, you can select one of these and give it priority status. The bearing line in the relevant views will automatically be locked on the object with this priority to reflects its bearing. You can only give priority status to one object. The priority is identified with a "P". If you change the tilt and bearing settings manually, the priority status is lost.