Hello Currently, facets are defined in perl code. This is not good for unimarc libraries : a recent improvement is specific to Marc21 and could not been transposed in Unimarc, because the information is not encoded in the same field in all unimarc libraries. I'm referring to http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4255 "Add item type to facet list" : there is no universal Unimarc field for "item type" :-( The solution could be a system preference for this peculiar facet. But if a development is needed I would prefer a more generic one, to make all facets fully editable, so that each library could define its own facets matching the (sub)fields of its choice, without editing perl files. Do you think it would be a good idea ? I think there is 2 way for doing this : - create a configuration file (yaml ?) - create a (big) syspref Which choice would be the best regarding performances (and other criteria I did not think of...) ? Regards, Mathieu Saby Rennes 2 University -- Mathieu Saby Service d'Informatique Documentaire Service Commun de Documentation Université Rennes 2 Téléphone : 02 99 14 12 65 Courriel : mathieu.saby@univ-rennes2.fr