key | provides an external means
of locating a full definition for the entity being named, such as a database record key
or other token.Status | Optional | Datatype | | Values | any string of Unicode characters | Note | The value may be a unique identifier from a database, or
any other externally-defined name for the referent. |
|
ref | (reference) provides an explicit means
of locating a full definition for the entity being named by means of
a URI.Status | Optional | Datatype | | Values | any valid URI | Note | The value must point directly to an XML element containing
the corresponding information, located within the current
document or elsewhere and acccessible by a URI. |
|
nymRef | (reference to the canonical name) provides a means of locating the canonical form
(nym) of the names associated with the object
named by
the element bearing it.Status | Optional | Datatype | 1–∞ occurrences of separated by whitespace | Values | any valid URI | Note | The value must point directly to an XML element containing
the corresponding information, located within the current
document or elsewhere and acccessible by a URI. |
|