Can I find a document about the JabRef 5 used biblatex file format somewhere?
Not the standard biblatex part of course.
I mean the groups meta-data etc.
And a very importan side question: How can I differentiate between a JabRef 4 and 5 bib-file? I see no version information in the file.
I only know this places with development documentation
But there is not the information I am looking for.