Indicates the kind of <target> that has been created, i.e., describes the reason why some portion of text has been designated for cross-references purposes
| Value | Meaning |
|---|---|
| Data characters | Text, numbers, or special characters used by a content-provider to name/describe the rationale for designating a portion of text for cross-references |
| Restriction: This attribute must be specified if the element is used. | |