I assume that code page 37 [0] is used in the Netherlands, so it is likely something more other than the common diacritics. Edit: I just saw it was in Belgium,

I assume that code page 37 [0] is used in the Netherlands, so it is likely something more other than the common diacritics. Edit: I just saw it was in Belgium, but the same should apply there. Although they seem to be using a variant of code page 37 called code page 500 (also in [0]). https://en.wikipedia.org/wiki/Code_page_37 https://en.wikipedia.org/wiki/Code_page_37