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Re: Z-Order and Tag Order Need to Match?

for

From: Birkir R. Gunnarsson
Date: May 27, 2020 10:45AM

The reading / tag order must be logical (for PDF files it means that
content is read in logical order, i.e. each paragraph/sentence is
placed in correct context with next and previous, when you have layout
with columns this is important and not a given)).
Typically the easiest way to achieve that is to have it match visual
order, since the visual order is typically the logical one, however
there may be situations where this is not 100% necessary or possible.


On 5/27/20, Ilana Gordon < <EMAIL REMOVED> > wrote:
> I should clarify that this is specifically for PDFs. And some government
> employee says it's a requirements.
>
> Ilana
>
> On Wed, May 27, 2020 at 12:17 PM Steve Green
> < <EMAIL REMOVED> >
> wrote:
>
>> Who is saying it's absolutely necessary? I can see how it might cause
>> accessibility issues when the layout of pages change as they are zoomed,
>> but it's by no means inevitable.
>>
>> That said, I tend to regard the presence of "z-index" attributes as a
>> warning that there might be other nastiness because it suggests the
>> design
>> is fundamentally flawed. It's the same as when you see positive
>> "tabindex"
>> attributes.
>>
>> Steve Green
>> Managing Director
>> Test Partners Ltd
>>
>>
>>