[throwaway798214]

The Finnish version of Excel used to have all of the functions translated to Finnish (in late 90s when I was doing Excel for living). It was literally impossible to do anything with it as none of the documentation knew about the translated functions and it was very hard to self-translate the functions (as in there was mostly no logic in the Finnish function names thanks to the way Finnish language works).

What was supposedly done in good faith to make it easier for non-English speaking Finns to do Excel functions ended up making it impossible for everyone. If you didn't know Excel then =IF() was just as cryptic as =JOS() and if you did know Excel then you couldn't figure out why =IF() didn't work. At least .xls files were compatible because apparently functions were saved as opcodes and not as strings.

I haven't used non-English software since so no idea if Finnish Excel still has translated fuctions. Hope not.