> > What other systems are there that could point to related metadata in that
> > way ?
> As noted in section 5., related metadata may be embedded into instance
> metadata (depending on capabilities of the encoding sytax). For example,
> it *is* possible to do this in RDF/XML. See Appendix B
Sure. I made this remark because I felt the abstract model does, somehow,
depend on RDF if perhaps not necessarily RDFS.