There are number of different situations regarding serials with supplements. Decisions need to be made if the item is to be cataloged (*), retained, bound, etc. These will be evaluated by the Head Cataloger and/or Bibliographers. Decisions and handling procedures will be recorded on serials checkin records in ODIN.
For some serials, supplements may be an occasional occurence and some may require analytics.
Secondary bibliographic unit. Discrete bibliographic unit that is supplementary or complementary to a basic bibliographic unit or to another secondary bibliographic unit. Note: Examples of secondary bibliographic units are a map in a pocket inside a book, a supplement to a newspaper, a separate index to a serial publication, a set of updates to a loose-leaf publication, an answer book accompanying a textbook, a serial update service to a single part of a multipart unit, or a pamphlet accompanying an audiodisc. A secondary bibliographic unit may itself be a single-part unit, multipart unit, or serial unit. Note that an equal bibliographic component of a set of differing units, such as a multimedia kit or a musical score and parts, is considered a basic bibliographic unit. Individual parts (for example, volumes) of serial and multipart units are considered parts, not secondary bibliographic units. See also basic bibliographic unit; bibliographic unit.
The "+" is used for "secondary bibliographic unit" for Tab2 Description.
Supplement. For the purpose of this standard, a publication closely connected in subject matter to the basic bibliographic unit, issued by the same publisher, secondary to but separate from the basic bibliographic unit. Supplements are frequently devoted to a special aspect of the subject matter of the basic bibliographic unit. Some supplements are issued serially, either regularly or irregularly, and others are issued as monographs. A supplement having its own item identifier (hence bibliographic description) is considered a basic bibliographic unit, and not treated as a supplement in this standard. A supplement included in the item identifier for a main work (basic bibliographic unit) is considered a secondary bibliographic unit, so long as it is not enumerated as part of the main work, in which case it is considered a part of the basic bibliographic unit.