This optional recursive "SUBJECT" actRelationship is used to link a referenced DICOM Presentation State to one or more associated referenced DICOM images (SopInstance act class is used in both cases) it is applied to.
ActRelationship Clone name: entryRelationship (replaces SUBJECT)
ActRelationship.typeCode: x_ActRelationshipEntry (Constraint: Fixed value = SUBJ)
ActRelationship.contextControlCode: "AP" (Additive Propagating)
ContextConductionInd: "true"