Hello everybody, We are trying to migrate an old proprietary software to Koha and one of the "requirements" of the librarians is something called "author sign" or "cutter number". The librarian manual I've consulted describes the process of creating this number using a table. This table contains for each letter 99 combinations of starting letters or syllables. For a bibliographic entry the starting letters of the name of the first author or the title is used to search in this table. Then the first letter and the resulting number is used as this code which has as purpose to simplify shelving. I was wondering if someone implemented such an algorithm in Koha in order to validate my assumptions for the requirements to implement such a field: - marc storage. Which marc field was used? (we are using unimarc) - formula. Was this implemented as a combo with all the values or as a value builder field plugin which calculates automatically the value? The algorithm is clear but there are some exceptions which are not quite obvious such as how this is calculated for a title starting with numbers. The manual states that for 1001 it uses "one thousand and one" as text. Thank you for any hints, Kind regards, Len www.len.ro