Could someone please explain the terms Biblio and Biblioitem? I tried looking through the manual and the FAQ's but the terms appear so frequently that I get too many hits. And the Glossary wasn't any help either. I'm editing the subfields in the MARC framework and under Advanced constraints there's a Koha link. I was trying to link at what I thought was the appropriate level - the biblio.isbn but there only appears to be a biblioitems.isbn Not understanding the difference between biblio and biblioitems makes me wonder if this will work. I'm trying to link analyticals together using their common ISBN in the 773 Host Item Entry field. Quoting from the 3.0 manual: # link : If you enter a field/subfield here (200b), a little glass appears after the subfield. If the user click on the glass, a search is done on the DB for the field/subfield with the same value. Can be used for 2 main topic : * on a field like author (200f in UNIMARC), put 200f here, you will be able to see all biblios with the same author * on a field that is a link (4xx) to reach another biblio. For example, put 011a in 464$x, will find the serial that was previously with this issn. With the 4xx pligin, you get a powerful tool to manage biblios connected to biblios # Koha link : Koha is multi-MARC compliant. So, it does not know what the 245$a means, neither what 200$f (those 2 fields being both the title in MARC21 and UNIMARC !). So, in this list you can "map" a MARC subfield to it's meaning. Koha constantly maintains consistency between a subfield and it's meaning. When the user want to search on "title", this link is used to find what is searched (245 if you're MARC21, 200 if you're UNIMARC). -- Elaine