Alex, Thanks. That's a helpful use case. I'd read that as x super a
sub i where super or sub is defining the relation between the variables
immediately on each side of the modifier. So I would think the
super/sub refers to the base line of the prior character which in turn
may itself be offset from the baseline of the character in front of it.
*Pete Brunet*
a11ysoft - Accessibility Architecture and Development
(512) 238-6967
pete @ a11ysoft.com
http://www.a11ysoft.com/about/
http://www.linkedin.com/in/petebrunet
Ionosphere: WS4G
Alexander Surkov wrote:
> Hi.
>
> Could you give me please some clarifications concerning text-position
> text attribute?
>
> 1) Spec says:
>
> When the text is not positioned on the baseline and the application's
> native attribute is not specified as super or sub the application
> should provide the value super when the text is above the baseline and
> sub when the text is below the baseline.
>
> What does "the application's native attribute is not specified" mean?
>
> 2) Let's consider an example:
>
> x<sup>a<sub>i</sub></sup>
>
> Could you say me "text-position" text attribute value for each offset?
>
> 0 - baseline
> 1 - super
> 2 - super or sub?
>
> I guess "super" and "sub" values should be calculated relative
> baseline of text accessible. In this case it sounds reasonable to
> return "super" at offset 2. But how is it helpful for AT?
>
> Alex.
>
>
>
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