The foaf:Document
class represents those things which are, broadly conceived,
'documents'.
The foaf:Image
class is a sub-class of foaf:Document
, since all images
are documents.
We do not (currently) distinguish precisely between physical and electronic documents, or
between copies of a work and the abstraction those copies embody. The relationship between
documents and their byte-stream representation needs clarification (see foaf:sha1
for related issues).