id Document Internal Identifier

Unique internal identifier of an element; allows element to be cross-referenced (made into a link). Value must be unique across a document, not just for an element type.


JATS has added the @id attribute to all OASIS table elements. For more information about this attribute, see documentation for the appropriate JATS tag set (
OPTIONAL on many elements; click for list and usage
Value Meaning
An XML identifier (ID) A unique identifier for the element. XML parsers can verify that an element pointing to one of these is pointing to a valid ID.
Restriction @id is an optional attribute; there is no default.