Precise Expansion Patterns (was: Re: [uf-discuss] Hcalendar in

Tantek Ç elik tantek at
Fri Dec 14 16:23:36 PST 2007

On 12/14/07 3:55 PM, "Martin McEvoy" <martin at> wrote:

> On Fri, 2007-12-14 at 23:18 +0000, Martin McEvoy wrote:
>> I do NOT however believe that machine data should be displayed in a
>> people area such as @title, I think machine data can be stored
>> elsewhere
>> in a document such as in the <head> in a list of <link>'s or <meta>'s

This is an anti-pattern.

Disconnecting data (or meta-data, whatever you prefer to call it) from its
context inevitably leads to corruption, and loss of fidelity.  Meta keywords
rotted for example.  One person writes the template with the head and link
and meta, and another puts the content in the page, etc. etc.

> No but seriously, with my web designer hat on if you are concerned about
> accessibility issues or abuse of the abbr pattern this is something
> worth thinking about.
> <abbr title="PT3M23S"><span
> title="three minutes twenty three seconds">
> 3m 23s
> </span></abbr>
> title distraction.
> I don't think there is any abuse of the abbr design pattern in the above
> example and it keeps machine data out of peoples faces.

Thanks Martin, this is an excellent example.


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