Fields 100, 110, 111 and 130 contain a name or a uniform title heading used as main entry.
For mixed material, this idea of authorship is not always clear-cut. The main entry may contain the name of the person, family, or entity responsible for bringing the materials together. Alternatively, the main entry may contain the name of the person, family, or entity for whom or which a collection is named.
Descriptions of the first indicator and all subfield codes, as well as input conventions for the 100, 110, 111, and 130 fields, are given in the following General Information sections: X00, X10, X11, and X30. The second indicator is described in the specific section for each field.