>As an aside, I note that much of this discussion revolves around issues of
>the definitions of key terms in the discussion, which is, of course, one of
>the purposes of topic navigation maps: to define things.
Topic Navigation Maps do ***_NOT_**** define things. They (only!) offer a means
of interchanging whatever somebody says about something, including definitions,
if any. They can be used even when no definitions are involved.
Michel.