| AnnotationFactory | Instantiates a new Bio::AnnotationI (or derived class) through a factory |
| Collection | Default Perl implementation of AnnotationCollectionI |
| Comment | A comment object, holding text |
| DBLink | DESCRIPTION of Object |
| OntologyTerm | An ontology term adapted to AnnotationI |
| Reference | Specialised DBLink object for Literature References |
| SimpleValue | A simple scalar |
| StructuredValue | A scalar with embedded structured information |
| TypeManager | Manages types for annotation collections |