[pdftex] Read Out Loud function in Acrobat Reader for Dyslexic students

[Victor Ivrii]

On Thu, Aug 28, 2008 at 5:05 AM, Martin Heller <mr_heller at yahoo.dk> wrote:
> Brad Burkman skrev:
>> Can I, using pdftex or pdflatex, add alternate text to tags in the
>> reading order so that, while the student sees the result of $-{3\over 8}
>> + {3 \over 4}$, it will read aloud as "negative three over eight plus
>> three over four," not "thirty-three hyphen forty-eight"?  An Adobe
>> tutorial tells me how to change the tags using Acrobat, but I want to do
>> it in TeX.
>
> You can specify the actual text as below. This works for
> copy-pasting but I don't know if you can make the read out loud
> tool pick it up as well?
>
> \pdfminorversion=5
> \documentclass{article}
> \begin{document}
> \pdfliteral direct {%
>  /Span
>    <</ActualText (negative three over eight plus three over four)>>
>  BDC
> }%
> $-\frac{3}{8} + \frac{3}{4}$
> \pdfliteral direct {%
>  EMC
> }
>
> Example 10.25 from pdf-reference manual. It does not seem to work
> for me. At least the read out loud tool reads the same regardless
> of what I put in the expansion string. Why?\\
> \pdfliteral direct {%
>    /Span << /E ( Doctor ) >> BDC
> }%
> Dr.
> \pdfliteral direct {%
>    EMC
> }%
> Healwell works at 123 Industrial
> \pdfliteral direct {%
>    /Span << /E ( Drive ) >> BDC
> }%
> Dr.
> \pdfliteral direct {%
>    EMC
> }%
> \end{document}
>
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-- 
========================
Victor Ivrii, Professor, Department of Mathematics, University of Toronto
http://www.math.toronto.edu/ivrii