22.8.2.1 ST_RelationshipId
This simple type specifies the relationship ID in a part’s relationship item which is the target of an explicit relationship from the parent XML element.
The kind of relationship which shall be the target of the relationship specified shall be determined based on the context of the parent XML element.
[Example: Consider the following markup in an Office Open XML document:
<… r:id="rId5" />
The id attribute is of type ST_RelationshipID, and therefore the relationship with ID rId5 must be the target of
an explicit relationship from the source part, based on the context of the parent XML element. end example]
This simple type’s contents are a restriction of the W3C XML Schema string datatype.
[Note: The W3C XML Schema definition of this simple type’s content model (ST_RelationshipId) is located in
A.6.8. end note]