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Re: [html5alt] some thoughts on LEGEND

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Wed, 4 Mar 2009 22:34:10 -0600
Cc: www-archive@w3.org
Message-Id: <B64C56C3-8359-41B0-BFC3-AFA6112E0C3B@trace.wisc.edu>
To: html5alt@lists.wisc.edu
not sure I follow this.

I though legend was intended to bind a caption that appears below a  
picture with the picture.  Not create a way to attach metadata to a  

Also I thought that we decided the three stages of a butterfly  
required alt on each of the items.  The legend was used only to put a  
caption on the group.

Using it for non-visual binding and description of groups would not  
seem to make sense.   if the group was a group, then all readers would  
need to see it.  no?

Maybe I'm missing your point.   What other places did you think of  
using it?

Gregg Vanderheiden Ph.D.
Director Trace R&D Center
Professor Ind and Biomed Engr
University of Wisconsin-Madison

On Mar 4, 2009, at 10:14 PM, Gregory J. Rosmaita wrote:

> aloha!
> i hope this makes sense, because it is a thought that was nagging me
> and keeping me from (hopefully temporarily) resting in peace, and  
> since
> i don't trust my memory to post about it tomorrow, i've booted my  
> laptop
> back up, and logged back on to the web to advance an analogy and  
> propose
> that PF/WAI formally point out to the HTML WG the advantage of  
> applying
> the LEGEND element -- in addition to the DETAILS element -- more  
> broadly,
> as the two elements provide authors creating HTML5 documents with a
> consistent means of strongly binding together collections of uniquely
> labeled objects and/or widgets...
> tell me if i'm off-base, but my understanding of the purpose and  
> function
> of the LEGEND element as defined for FIGURE is derived from the use of
> LEGEND in the FIELDSET, LEGEND, LABEL model inherited from HTML 4.01  
> --
> the LEGEND provides a terse description of a group of related items:  
> in
> a FORM, a group of related INPUT controls are labeled by the LEGEND
> defined for the FIELDSET, while each individual INPUT control is  
> bound to
> its LABEL with a for/id relationship, just as each IMG in a FIGURE  
> which
> contains multiple images (as in GreggV's "3 Stages of a Butterfly's  
> Life"
> example) needs to be bound to a unique terse descriptor through use of
> @alt and/or aria-labelledby
> so, my very fuzzy brain concludes that PF should also advise the  
> since re-use and consistency are a hallmark of a well-designed markup
> language, the LEGEND element should be used whenever the situation
> calls for a terse descriptor/heading for a collection of related
> objects or widgets, when contained in any of HTML5's media specific
> elements, such as VIDEO, AUDIO, FIGURE, etc.
> both the HTML WG and WAI have a vested interest in simplifying the
> markup language that is intended to become the new lingua franca (or
> lowest common denominator, depending upon one's point of view)
> gregory. finally and actually shutting down for the night.
> ---------------------------------------------------------------------
> A conclusion is simply the place where someone got tired of thinking.
>                                                      -- Arthur Bloc
> ---------------------------------------------------------------------
>   Gregory J. Rosmaita - oedipus@hicom.net AND gregory@ubats.org
>        Camera Obscura: http://www.hicom.net/~oedipus/
> United Blind Advocates for Talking Signs (UBATS): http://ubats.org
> ---------------------------------------------------------------------
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Received on Thursday, 5 March 2009 04:34:55 UTC

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