Value of the identifier of an associated element; used for linking related elements (for example, <term> to a <def>, <bio> to a <contrib>).
| Value | Meaning |
|---|
| An identifier (IDREF) | Points to the existing identifier. |
| Restriction: This is an optional attribute; there is no default. |
<aff>,
<author-notes>,
<award-group>,
<award-id>,
<bio>,
<contrib>,
<def>,
<funding-source>,
<funding-statement>,
<named-content>,
<sig>,
<sig-block>,
<term>,
<xref>| Value | Meaning |
|---|
| One or more identifiers (IDREFS) | Points to one or more existing identifiers. |
| Restriction: This is an optional attribute; there is no default. |