step three. SUBFIELDS is actually designated of the SUBFIELD Requirements and you can DELIMITERS
An excellent subfield: Extremely areas incorporate several relevant bits of studies. Each type of data from inside the occupation is called a good subfield , each subfield try preceded of the good delimiter-subfield code integration . Sphere 001 owing to 009 do not have subfields.
Such as for example, industry to possess a personal title heading boasts a subfield to possess a personal identity, numeration, titles and you may dates for the label, one of several others.
A good subfield password: Subfield codes is you to definitely lowercase page (from time to time several) preceded of the an excellent delimiter. A beneficial delimiter is actually a character regularly separate subfields. For each and every subfield code implies what kind of study comes after it. (For every single industry regarding the MARC 21 authority structure, the newest MARC 21 documents listing and refers to this new valid subfield codes.)
From the more than example, the fresh new subfield rules was $a private identity, $b getting numeration, $c to own headings or any other terms and conditions of the a name, and you will $d having dates from the a reputation.
A beneficial delimiter: Some other software packages fool around with other characters to portray the latest delimiter with the the display or into printouts. Instances try a double dagger ( ), an « on signal » (), a money signal ($), an underline ( _ ), or the graphic symbol » « . Within book the dollar sign ($) is employed once the delimiter part of the subfield password.