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@grindhold @silverpill @sabrinkmann I think we should at least use a system that’s somewhat resistant to semantic overload, like CSS vendor prefixes.

e.g. add "flohmarkt:foobar" as a new field, and when it receives an FEP you can drop the prefix. So “on the edge” software can start by using the prefixed field, and then slowly migrate to unprefixed FEP once that’s there.