Hello Hans, thank you for implementing multilingual indexing. Is there a way to turn off case sensitivity? I would expect the result as written in the minimal example below. This is not wanted in every case (should be a switch). The "Oo oo Öo öo" part is probably tricky then, so I've sorted it as usual with xindy plus my custom module and I've got oá öb Oč Öď Oo oo Öo öo Öq öř Oš oů so the "Oo, oo, Öo, öo" part could probably depend on available methods (before, after, last, first). In practice, one hardly gets same lettering with the different accents. Thank you, Jano % tricky-003.tex: \setuplayout[topspace=1cm,height=middle] \setupbodyfont[11pt] \starttext wanted result: \blank oá öb Oč Öď Oo Öo oo öo Öq öř Oš oů \subject{before : Oo Öo oo öo} \placeregister[index][language=en,method=before] \par \subject{after : oo öo Oo Öo} \placeregister[index][language=en,method=after] \par \subject{first : Oo oo Öo öo} \placeregister[index][language=en,method=last] \par \subject{last : oo Oo öo Öo} \placeregister[index][language=en,method=first] \par \dorecurse {3} { \page \recurselevel: \index{oá} \index{öb} \index{Oč} \index{Öď} \index{oo} \index{öo} \index{Oo} \index{Öo} \index{Öq} \index{öř} \index{Oš} \index{oů} done } \stoptext