404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Ffr%2Ffr%2Fcross-documents%2F14022137%2F14812271%2F1010%2Fpage1&title=Jean-Pierre+Micha%C3%ABl was not found on this server. That’s all we know.