- From: Martin Bryan <mtbryan@sgml.u-net.com>
- Date: Fri, 20 Dec 1996 09:13:16 +0000
- To: w3c-sgml-wg@w3.org
>3. Minimum Progress on Hyperlink Enhancement > >The minimum set of hyperlink constructs should: > >3.1 subsume the existing WWW Anchor semantics in a smooth and natural way. > >3.2 provide a hyperlink mechanism with richness similar to that of the > HyTime "ilink" construct. This means that the link > - has a type, > - has multiple ends, each of which has a role, and > - may be located away from any of its ends, thus supporting links into > read-only material. > >3.3 support addressing at least by URL and ID attribute, alone or > in combination. There is a vital element missing here - the ability to address part of an object that does not have an ID (or a name attribute if we are to fully meet 3.1) associated with it. If we are going, as claimed in 3.2 to "support links into read-only material" we have to presume that the objects we are pointing to have not been named in a reasonable way. Therefore we need an addressing mechanism that can identify any part of any document. URL and ID are not sufficient, either alone or in combination. I would also argue strongly for letting a single anchor role point to mutliple locations, which is not possible when you say "has multiple ends, each of which has a role". Anchor roles can type location sets, just as the ilink construct allows you to type links. Incidentally, in the HyTime TC ilinks will become a deprecated form: the extended HyLink architectural form will subsume their role and would form a better basis for this work. (More on this later, if Eliot does not beat me to it!) Martin Bryan ---- Martin Bryan, The SGML Centre, Churchdown, Glos. GL3 2PU, UK Phone/Fax: +44 1452 714029 WWW home page: http://www.u-net.com/~sgml/
Received on Friday, 20 December 1996 04:14:23 UTC