Re: The value of navigability

Dave Raggett (
Tue, 7 Jun 94 9:03:57 BST

Gavin Nicol writes:

> ... parts of a document can be formatted to best help people understand
> the information. Such formatting might include removing large parts of
> irrelevant data (for example, if you had a play, you might remove
> everything *except* the names of the speakers, and when you clicked on
> the speaker name, a box containing the speakers lines might appear).

I think we ought to bite the bullet and support SGML's marked sections.
This allow you to switch on/off sections of a document with simple entity
declarations that can be set in the <!DOCTYPE> declaration or set by
client-side scripts or user preferences. It is too late to do this for
HTML 2.0, but I see no reason why HTML 3.0 compliant browsers should
duck this issue. The parsing mechanism is quite easy to implement.

Best wishes,

Dave Raggett

----------------------------------------------------------------------------- Hewlett Packard Laboratories email: Filton Road tel: +44 272 228046 Stoke Gifford fax: +44 272 228003 Bristol BS12 6QZ United Kingdom