Body:
| (KeySet, KeySet, Annotation) |
Attributes:
Contained in:
An association permits an annotation to be placed on an ordered pair of entities rather than on just one. The first and second KeySets identify the start and end of the annotated "link".
The StudyOID and MetaDataVersionOID provide a context for interpreting CodeList references within the Annotation. They do not affect the meaning of the KeySets.