Hi, If an unexperienced programmer wants to make use of the multilingual interface... I miss some clues how to implement changes on labeltexts depending on the language. \unprotect \defineinterfaceconstant{weekagenda}{weekagenda} \startinterface de \setinterfaceconstant {weekagenda}{Wochenagenda} \stopinterface \startinterface nl \setinterfaceconstant {weekagenda}{Weekagenda} \stopinterface \def\Week{\selectinterface\c!weekagenda} \protect \mainlanguage[de] \starttext \Week \stoptext Willi