But as far as I know, in most (all?) hypertext systems, the origin and
destination of links are points. Certainly this is true in WWW, e.g.
The destination of a link is a position in a document, never a section
of a document. On the other hand, in some sense WWW's Anchors do label
a region of the origin, since the anchor has an explicit beginning
But then this raises another issue: does WWW allow anchors within
anchors? I think not - in which case I could not use WWW anchors to
both label a paragraph (e.g. for attaching an annotation) and a word
within it (e.g. for definition). This worries me quite a bit. Nor
can I attach multiple links to the same point (e.g. definitions of a
word in multiple languages).