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Re: Hierarchical link types

From: Ian Hickson <ian@hixie.ch>
Date: Mon, 5 Nov 2007 22:47:48 +0000 (UTC)
To: Philip Taylor <philip@zaynar.demon.co.uk>
Cc: HTML WG <public-html@w3.org>
Message-ID: <Pine.LNX.4.62.0711052205440.30809@hixie.dreamhostps.com>

On Tue, 21 Aug 2007, Philip Taylor wrote:
> 
> A common structure for sets of pages is:
> 
>     Table of contents
>         /    \
>        /      \
>  Section A  Section B
>    / | \      / | \
>   /  |  \    /  |  \
> P1  P2  P3  P4  P5  P6
> 
> LaTeX2HTML provides various examples:
> http://www.lanl.gov/thermoacoustics/Manual/DelEdoc.html
> http://www.cs.cmu.edu/afs/cs/project/jair/pub/volume16/drummond02a-html/drummond02a-html.html
> http://docs.python.org/lib/lib.html
> 
> When each page has important information (e.g. the 'section' pages have 
> an introductory paragraph for that section), a user would like to follow 
> "next" links through TOC -> A -> P1 -> P2 -> P3 -> B -> P4 -> P5 -> P6. 
> (The "next" buttons in the given examples do that.)
> 
> When the 'section' pages don't have any useful information (e.g. they're 
> just sublists of the table of contents), a user may like to follow P1 -> 
> P2 -> P3 -> P4 -> P5 -> P6 instead.
> 
> The current definition for "next" ("the link is leading to the document 
> that is the next sibling of the current document") doesn't allow authors 
> to handle either of those cases, instead requiring the user to follow 
> several "up" and (implicit) "down" links to get from P3 to P4, thus 
> preventing the user from concentrating fully on the finer details of 
> thermoacoustic simulations. (Since the "down" links are never explicitly 
> listed or ordered, there is no way for a UA to automatically determine a 
> preorder traversal through the tree.)

I've split first/prev/next/last from the hierarchical keywords and made a 
new 'sequence' section. Let me know if that works.

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 5 November 2007 22:48:04 GMT

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