  The semantic Web initiates new, high level access schemes to online content
and applications. One area of superior need for a redefined content exploration
is given by on-line educational applications and their concepts of
interactivity in the framework of open hypermedia systems. In the present paper
we discuss aspects and opportunities of gaining interactivity schemes from
semantic notions of components. A transition from standard educational
annotation to semantic statements of hyperlinks is discussed. Further on we
introduce the concept of semantic link contexts as an approach to manage a
coherent rhetoric of linking. A practical implementation is introduced, as
well. Our semantic hyperlink implementation is based on the more general
Multimedia Information Repository MIR, an open hypermedia system supporting the
standards XML, Corba and JNDI.
