Open Annotation: Annotation Type List

1. Introduction

This document provides a reference source for different classes of Annotation for use within the Open Annotation Frameowork.

Development of new Annotation classes can take place on the Open Annotation Wiki, or within external communities. To have a class added to the list, please send a mail to the Open Annotation Google Group.

1.1 Namespaces Used

This specification uses the following namespaces and prefixes to indicate those namespaces:

Prefix	Namespace URI	Description
`aos`	`http://purl.org/ao/selectors/`	Annotation Ontology Selectors
`cnt`	`http://www.w3.org/2008/content#`	Content in RDF
`dc`	`http://purl.org/dc/elements/1.1/`	Dublin Core elements
`dcterms`	`http://purl.org/dc/terms/`	Dublin Core terms
`dcmitypes`	`http://purl.org/dc/dcmitype/`	Dublin Core types
`foaf`	`http://xmlns.com/foaf/0.1/`	Friend of a Friend vocabulary
`oac`	`http://www.openannotation.org/ns/`	OAC vocabulary
`rdf`	`http://www.w3.org/1999/02/22-rdf-syntax-ns#`	RDF vocabulary
`rdfs`	`http://www.w3.org/2001/01/rdf-schema#`	RDF Schema vocabulary

2. Annotation Type List

This document will list the known subclasses of oac:Annotation.

Currently only two are known, Reply and DataAnnotation, and they are defined in the main Open Annotation Guidelines document.