Processing unit, method for operating a processing unit and use of a processing unit

A processing facility comprising:

• at least one processing station;
• and
• at least one covering at least partly surrounding the processing station, wherein the covering has at least one viewing window,
• wherein a display unit displays at least one item of information about the processing station on the viewing window,
• wherein the type of information is determined dependent on a position of the operator relative to the viewing window;
• wherein the type of information changes according to whether the operator is remote from the viewing window or directly at the viewing window, wherein the display unit displays a first type of information on the viewing window as the at least one item of information when the operator is remote from the viewing window, wherein the display unit displays a second type of information on the viewing window as the at least one item of information when the operator is directly at the viewing window, wherein the second type of information includes a different type of information than the first type of information, and wherein the first type of information and the second type of information are associated with a same warning or error about the processing station.