Re: Minimisation of figure

Sarven Capadisli wrote:

> Hence, I propose:
>
> "If the "legend" class is found on the
same element as the "image"
> class (or the image inferred by the previous rule),
then the contents
> of the title attribute MUST be used as the
legend." [1]
>
> should be changed from *title* to *alt*.

The reason for choosing title over alt for
this purpose is two-fold:

1. The purpose of alternative text and legends differ.
Alternative  
text is meant to be shown when the image cannot be shown --
for  
example, the resource is unavailable, image loading is
disabled, or  
the browser is not capable of displaying the image format.
The legend  
is meant to be visible alongside the image. Thus the
semantics of  
alt
and legend differ.

2. The principles <http://mi
croformats.org/wiki/principles> state  
"visible data is much better for humans than invisible
metadata". For  
most people (using modern graphical browsers, with image
loading  
enabled), title is more visible than alt, the former of which
only  
needs a mouse-over to see the tool tip, whereas the latter
requires  
view-source.

-- 
Toby A Inkster
<mailto:mailtobyinkster.co.uk>
<http://tobyinkster.co.uk
>



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On Sat, Mar 22, 2008 at 4:06 AM,
> Sarven Capadisli wrote:
>
>  > Hence, I propose:
>  >
>  > "If the "legend" class is found on
the same element as the "image"
>  > class (or the image inferred by the previous
rule), then the contents
>  > of the title attribute MUST be used as the
legend." [1]
>  >
>  > should be changed from *title* to *alt*.
>

Toby A Inkster <mailtobyinkster.co.uk> replied:
>  The reason for choosing title over alt for
this purpose is two-fold:
>
>  1. The purpose of alternative text and legends differ.
Alternative
>  text is meant to be shown when the image cannot be
shown -- for
>  example, the resource is unavailable, image loading is
disabled, or
>  the browser is not capable of displaying the image
format. The legend
>  is meant to be visible alongside the image. Thus the
semantics of
>  alt and legend differ.
>
>  2. The principles <http://mi
croformats.org/wiki/principles> state
>  "visible data is much better for humans than
invisible metadata". For
>  most people (using modern graphical browsers, with
image loading
>  enabled), title is more visible than alt, the
former of which only
>  needs a mouse-over to see the tool tip, whereas the
latter requires
>  view-source.

I agree with Toby. What about modifying the rule to account
for both:

If the "legend" class is found on the same element
as the "image"
class (or the image inferred by the previous rule), then the
contents
of the title attribute MUST be used as the legend.
<new>If the title
attribute is missing or empty, the alt attribute MAY be
used.</new>.


Tim White
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