Hi again, I've added in CVS (misc directory) a script to clean MARC DB when a subfield is removed from the MARC editor : the subfield is NOT removed from DB (to avoid stupid loss of data). This script forever removes unused subfields from the DB. Quite fast (indexed delete) -- Paul POULAIN Consultant indépendant en logiciels libres responsable francophone de koha (SIGB libre http://www.koha-fr.org)