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− | == Introduction ==
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− | == Definition ==
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− | An optional [[Identity Attribute]] that uniquely identifies an [[Entity]] within a given [[Context]]
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− | Note:: the [[Entity]]'s containing [[Context]] also has a unique identifier, the [[ContextId]], and that the combination of the [[ContextId]] and the [[SubjectId]] is an absolute unique identifier that is used in Higgins [[Relation]]s.
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− | == ABNF ==
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− | Rules not defined in this ABNF are defined in the [http://wiki.oasis-open.org/xri/XriCd02/Xri2dot0Abnf ABNF for XRI 2.0] (which includes the IRI ABNF from [http://www.ietf.org/rfc/rfc3987.txt RFC 3987]).
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− | subjectId = ifragment / xri-segment
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− | ==See Also==
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− | *[[Concepts]]
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− | *[[ContextId]]
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− | *[[Relation]]
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− | ==Links==
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− | *[http://eclipse.org/higgins Higgins Home]
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