I just realized I haven't had the need to do a reference link lookup
until know and don't really know how.

Pretend we have +User(s), they are from different countries like so:
(rel country  (+Ref +Link) NIL (+Country))

Now if I want to have all the Germans, how would that generator look?

Maybe like this?:

(country +User (db nm +Country @CountryName))

Or is there an easier way?

I'm looking at this example:

But I don't really understand what is happening there since I don't
know what is hiding behind all the symbols, what is the meaning of
this line for instance: (nm +Ort @Ort (ort @Cls)) that last (ort



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