Specifically in the object mentioned, a mention would not have been necessary as alt_name and name are already set with the two values in question and no decision is necessary. These "private" keys should be used extremely sparingly in the production database.    With fixme, one can also query the start letters of the value in the search, an extra notation would definitely not be necessary. I also do not consider pure capital letters to be useful, as there is too much danger that data will be overwritten in the event of unclean corrections. A postfix consisting of an import reference would probably be a better idea.