No problem, Martyn! :)
They aren't attached to categories yet. I haven't figured out what the categories should be called. It feels wrong to use English for all the category names, but it would be quite difficult to make the categories using the appropriate language for each.
It would be a bit cryptic, but if we just used the language codes for the categories (en, fr, nl, etc.), those are international, right? So they should be universally understandable.