:[[hold/0XX|0-- Identification Block]]: contains numbers that identify the record or the holding.:[[hold/1XX|1-- Coded Information Block]]: contains fixed length data elements (usually coded) describing various aspects of the record or data.:[[hold/2XX|2-- Location and access block]]: contains information that identifies the institution, physical site or collection at which a bibliographic unit is located or from which it may be available.:[[hold/3XX|3-- Note Block]]: contains notes, intended for public display, that contribute to the identification of the item described in the holdings record.:[[hold/5XX|5 --Extent of Holdings Block]]: contains information for caption, pattern, enumeration and chronology of a specific bibliographic item (basic or secondary unit) for which a location is to be made.:[[hold/7XX|7-- Responsibility Block]]: contains a form of responsibility heading related to the item described in the holdings record.:[[hold/8XX|8-- Source Information Block]]: contains the source of the record, and cataloguer's notes about the data not intended for public display.:[[hold/9XX|9-- National Use Block]]: contains data local to the originator of the record. Field tags will not be defined in the ''UNIMARC Holdings Format '' for intersystem exchange.