Hello I thought it was mandatory for creating an index in Zebra to edit 3 files (record.abs, ccl.properties, bib1.att). cf http://wiki.koha-community.org/wiki/Understanding_Zebra_indexing But I was surprised to find some indexes that are actually usable (in search menu) without any definition in bib1.att. They are all related to UNIMARC coded information (fields 100/105/115/116): video-mt 1=Video-mt Video-mt video-mt Graphics-type 1=Graphic-type Graphics-support 1=Graphic-support Type-Of-Serial 1=Type-Of-Serial Frequency-code 1=Frequency-code Regularity-code 1=Regularity-code Material-type 1=Material-type Literature-Code 1=Literature-Code Biography-code 1=Biography-code Illustration-code 1=Illustration-code Could somebody gives me some light? Does that mean defining a numeric attribute in bib1.att is a good practice, but not technically mandatory? Should this syntax be corrected? Regards, M. Saby -- 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