Abstract: A method for operating a display unit, which is a component of a field device of process automation technology or is connectable to such a field device, The method includes: invoking a function of a display electronics associated with the display unit by a field device electronics associated with the field device, which function serves for visualizing textual information on the display unit; performing the function by the display electronics, wherein the performing of the function includes receiving textual information from the field device electronics, wherein the textual information is essentially free of composition information relevant to the visualizing of the textual information; and visualizing the transmitted textual information on the display unit based on a display schema stored, especially completely stored, in the display electronics of the display unit, which display schema contains composition information, especially in the form of layouts and/or fonts.