[NTG-context] Re: Tagging Math

11 Apr 2025

      Thanks Ulrike,

This is helpful (and sad) information.

Would it be possible to  have ConTeXt produce two documents, one that shows the typeset formula as usual, and a second one that shows instead of the formula the text that Mikael’s example shows as a note? Then screen-reading the second output should be acceptable, at least as far as math is concerned?

Thanks,

Matthias
...
On Apr 11, 2025, at 6:53 AM, Ulrike Fischer  wrote:
Am Thu, 10 Apr 2025 15:02:53 -0400 schrieb Matthias Weber:
...
Thank you Mikael,
What I would like to to is to have what \placenotes[mathnote]
produces added to the pdf as a tag so that a screen reader
would be able to read the math.
The only reader that can currently make use of MathML embedded as
associated file is Foxit together with a beta version of NVDA and a
current MathCat.
See
https://latex3.github.io/tagging-project/documentation/wtpdf/fulldoc
for some discussions.
To find and use the associated MathML file Foxit requires that it is
attached to a Formula element in the PDF 2.0 namespace:
https://github.com/foxitsoftware/PDF_UA-2.
context attaches the MathML to a `math` element declared in a
context specific namespace and then rolemapped (like all other
structure elements) to the NonStruct structure element (which as the
name implies has no semantic meaning). This means that this MathML
is not seen by any reader and useless. If some math is read then
simply in the amount reader can extract math from untagged PDFs.
-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/
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