Dell U3014 Monitor - Manual (Page 3)

Setting Basic Display Functions
A Preset Mode for the selected monitor can be manually applied using the menu on the Basic tab. Alternatively, Auto Mode can be enabled. Auto Mode causes your preferred Preset Mode
to be applied automatically when specific applications are active. An onscreen message momentarily displays the current Preset Mode whenever it changes.
The selected monitor's Brightness and Contrast can also be directly adjusted from the Basic tab.