@kovid, @chaley - on reflection, what I'd prefer is a newline separated 'dump' of
all column header names and values in header name order irrespective of how the embedded or free-standing Book Details panels are configured.
Maybe via a "Copy book metadata" item in the Book details menu.
And… I don't have to change the User interface layout to get a side panel BD, I can just press K or I and copy from the pop-up BD. Why didn't I try that in the first instance
BR