Web annotation

[2] This is a general feature of several tools for annotation in natural language processing or in the philologies.

Annotations are added on top of that, but may eventually become comments which, in turn, may be integrated in a further version of the document itself.

The exact nature of this relationship changes according to the intention of the annotation, but the body is most frequently somehow "about" the target.

[21] Independently from Web Annotation, more specialized data models for representing annotations on the web have been developed, e.g., the NLP Interchange Format (NIF)[22] for applications in language technology.

In early 2020, the W3C Community Group "Linked Data for Language Technology" launched an initiative to harmonize these vocabularies and to develop a consolidated RDF vocabulary for linguistic annotations on the web.