Hyperlink Terminology Re: Comments on June 8 draft

Ralph Ferris (ralph@ossi.com)
Wed, 14 Jun 95 18:25:57 EDT

> Dan Connolly wrote:
> The HTML 2.0 spec cites the DEXTER reference model. That's what
> TimBL's hypertext research was based on, and what most modern
> hypertext literature is based on. Now I admit that I haven't actually
> read the seminal DEXTER paper, but I have read related papers, and
> they're pretty consistent:
> * a link is a pair of anchors (or a set of anchors)
> (kinda like an edge in a graph)
> * a anchor is an endpoint of a link
> (kinda like a vertex in a graph)

HyTime follows a similar model. From the standard:

3.1 anchor: An object (or aggregation of objects) that is linked by a

NOTE 9 The term "object" is not a formal construct in HyTime; an anchor
could be a document, an element, an arbitrary chunk of data, or any
other thing.

NOTE 10 An object is an anchor if and only if a hyperlink identifies
it as such.

NOTE 11 An object could be identified as an anchor by several link
ends, in the same or different hyperlinks.

3.15 hyperlink: An information structure that represents a relationship
among two or more objects.

NOTE 22 Objects that are related by a hyperlink are called the "anchors"
of the hyperlink. An anchor is identified by a property of the
hyperlink called a "link end".

NOTE 23 Hyperlinks can be assigned link types and names by applications
and architectures that use HyTime.


Ralph E. Ferris
Project Manager, Electronic Publications
Fujitsu Open Systems Solutions, Inc. (FOSSI), Engineering Services
Phone: (408) 456-7806 Fax: (408) 456-7050
E-mail: ralph@ossi.com

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