The first time you log into the DOL Tool, it will be shown in the GUI Language used for your Browser.
However, You may select your preferred GUI language to a different language at any time via the grey menu-dropdown in the upper right screen corner (see screenshot below)
You may select between: English, German, French and Danish Graphic User Interface (GUI) Languages.
NOTE: This only changes the GUI language of the DOL Tool. The Product Portfolio is not changed.