◇◆
document-id Related Object Document Identifier
Identifier of a document within a publication that is (or contains) the target of
the
<related-object> element.
Usage/Remarks
This attribute holds an external
identifier assigned to a publication that is part of the description of a related
object (<related-object>).
OPTIONAL on element: <related-object>
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | An identifier for the document that contains the related object (<related-object>). |
| Restriction | This is an optional attribute; there is no default. |