CBO: Model Definition Language (see X machines, MathML, Control Systems/Simulink?, Labview, Graphical Programming Languages, SBGN, agent-based langs, event-based langs, how to write a lang etc...) Uses CBO as reserved words -->XML Schema Uses CBO for (to inform) semantics (syntak, grammar) -->or CBO just for GUI assist of semantics RDF or some other mapping to semantic web? Karma or something else for URI and provenance (SVN/WebDav -- semantic?) -->CBO term to Model Representation of Term -->"macro" or "implementation specific" in "metadata"