Office Document Relationships

Within an Office Open XML document, it is necessary to be able to explicitly reference one part within the package from another

example: : A PresentationML Slide needs to be able to explicitly reference each picture within it to know where each one is anchored.

In order to ensure that all such explicit relationship references are easily identifiable within a document, all such relationships are included within attributes in this namespace. This namespace therefore only serves to define attributes used throughout Office Open XML to create explicit relationships, and a single simple type for such attributes.