Propagation along inheritance hierarchies: Annotations on structured types and their properties also propagate down from the base type to the derived types Annotations can be overridden at the derived type or its properties with replace (PUT) semantics for all types of annotations: primitive, structured, collection-valued. Propagation along "uses" dependencies It is up to the definition of the term to specify whether and how annotations with this term propagate to places where the annotated model element is used, and whether they can be overridden. E.g. a "Label" annotation for a UI can propagate from a type definition to all properties using that type, and may be overridden it in some cases with a more specific label, whereas an annotation marking a property as containing a phone number will propagate but may not be overridden.