404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Fde%2F11921284%2Fgaston_raynaud%2F&title=Gaston+Raynaud+%281850-1911%29 was not found on this server. That’s all we know.