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- In my last piece of mail (I hope they arrive in order) I tried to
- generalize replacement and expansion links. But this way of
- describing links presupposes that links have a range in the source
- document. You need this (or is this obvious?) e.g. because you must
- know whether an annotation applies to the entire document, a section,
- or just one word. Likewise for replacements, you need to know how
- much to replace.
-
- 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
- and end.
-
- 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).
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