404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=http%3A%2F%2Fdata.bnf.fr%2F11990217%2Fbelgique_commission_royale_pour_la_publication_des_anciennes_lois_et_ordonnances_de_belgique%2F&title=Belgique.+Commission+royale+pour+la+publication+des+anciennes+lois+et+ordonnances+de+Belgique was not found on this server. That’s all we know.