Indicates the type of or reason for a supplement (if the publisher has recorded that information), for example:
|
issue |
For supplements to a particular journal issue. |
|
conference |
For supplements containing information from a conference, symposium, or other gathering. |
|
periodic |
For supplements issued at regular intervals. |
| Value | Meaning |
|---|---|
| Data characters | Text, numbers, or special characters that name the type of supplement, for example, “conference”. |
| Restriction: This attribute may be specified if the element is used. | |