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I would never appeal to that as any authority. :) (I've always avoided learning the 'reforms', as initial reading suggested they were almost all total nonsense. Most have been taken back since 1996 and confusion reigns everywhere in Germany, with lots of publishers simply using their own take on the rules, and as far as I know, following this unmitigated disaster, there is currently no recognised authority on German spelling.)
Ah, the good old Rechtschreibreform.