One could convert the .off to a text file also.
The characters are Ascii or Extended Ascii so wouldn't be that hard.
I'd think Excel would be able to handle extended Ascii.
ä In the .off files translates to 228 which Exel should recognize.
So appears they used Unicode - Latin Supplement A
Can you send me a txt file that excel does not work with?
Looking at the txt files in Notepad shows they are a mess. 010 opens them really good!
So the import to Open Office always gives me fits!