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William F Hammond <[log in to unmask]>
Reply To:
Mailing list for the LaTeX3 project <[log in to unmask]>
Mon, 22 Mar 2021 11:31:47 -0700
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Hi Jonathan,

I doubt if I will be available for the meeting you mentioned.

Let me just say that profiled LaTeX, as in my talk at TUG 2010
provides a formal elucidation of the tree structure in any math expression
in its author-level XML document type.  My project
GELLMU <> provides a didactic
example.  In the didactic production system there's also another formal
elucidation of the math tree structure for each math expression in the
spawned HTML-with-MathML output, but the latter involves only the less
expressive vocabulary of presentation MathML whereas the former has a
vocabulary (for element names) that is close to the command vocabulary for
LaTeX.  (Of course, the MathML there could be enriched using MathML
<semantics> to refer back to LaTeX-like names.)

I have not provided a good tuning of my didactic author-level XML for use
of the blind, but I think it should not be far away for someone who wants
to do that.

In my talk at TUG 2014 <> I
spoke about the possibilities for direct "viewing" of (a tuning of) my
didactic author-level XML in a web browser using only CSS.

Thank you for providing this focus.

Best regards,

                     -- Bill

William F Hammond
Email: [log in to unmask]

On Mon, Mar 22, 2021 at 7:09 AM Jonathan Fine <[log in to unmask]> wrote
in part:

> A math formula has a tree structure, as does the source code for a
> computer program. There's a shared interest in navigating complex trees.
> Particularly the blind math people who prefer to read math via the LaTeX
> source file.