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<div>Hello Tammy,<br>
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On 16/03/2018, at 7:56, "Stitz,Tammy A" <<a href="mailto:tstitz@uakron.edu">tstitz@uakron.edu</a>> wrote:<br>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Hello Everyone:<br>
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I know that some of you wanted to know what happened when I tried to make a tagged PDF from a LaTeX generated PDF, so I am sending this email to the list. I tried a few packages when using pdflatex, but none seemed to make a structured, tagged PDF. The only
software that I know that can add tags to a PDF is Adobe Acrobat. </span></p>
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<div>Yes, it does a reasonable job, but needs a lot of touching up afterwards.</div>
<div>It is this manual post-processing that makes it unsuitable (yet) for an automated production system.</div>
<div>But it is important that people like yourself try it out, to appreciate both the strengths and weaknesses of this approach — that is, adding tags after all the typesetting has been done.</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">If you have used any other software, please let me know.<br>
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<div>What is really needed is for LaTeX processing to add tagging, according to the structure inherent in:</div>
<div> 1. the author's LaTeX source</div>
<div> 2. the chosen document-class</div>
<div> 3. any loaded packages </div>
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<div>This is what I am working on, and have achieved with several significant examples, chock full of mathematical content. These will be part of my TUG presentation in Rio, later this year.</div>
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<div>They are not yet available online.</div>
<div>I'll post again when they are.</div>
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When Acrobat generated the tags, some strange things happened. (1) Some brackets and other large symbols like summations disappeared when I had Acrobat assign tags</span></p>
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<div>This happens with TeX's extension fonts, when there is no /ToUnicode resource.</div>
<div>It helps to load glyphtounicode.tex to get mappings based upon the glyph name.</div>
<div>This is just one of the things done when the pdfx package is loaded.</div>
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<div>The first step in developing methods to produce tagged PDF compliant with published ISO standards, is to first satisfy all requirements for PDF/A compliance. There is significant overlap.</div>
<div>Ultimately you want to satisfy both PDF/A-2a and PDF/UA-1.</div>
<div>The pdfx package is vital to be able to achieve this.</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">. I was thinking it might have to do with when a font was compressed. I adjusted what I used for commands (e.g. use bmatrix instead of \left\right).
I was unable to find a pattern, but I thought it was worth mentioning.<br>
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Many tags and much of the reading order needs corrected after Acrobat creates the tags.</span></p>
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<div>Precisely. It's too much work, and cannot result in anything close to what a fully-automated approach from LaTeX can achieve.</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">If you have mostly text and simple equations, the screen reader JAWS reads it well. I used my thesis as a test case and it had many matrix equations,
which are read awful by JAWS. The only solution that I could find was to add alternative text to each equation, which was very time consuming</span></p>
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<div>The big question here is ‘What should that alternative text be?'</div>
<div>Just reading the characters separately is not sufficient.</div>
<div>How about the LaTeX source, complete with backslashes ?</div>
<div>Some people say that this is desirable.</div>
<div>What do you think?</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">. I wanted to find a simple solution that students would use when they submitted their theses and dissertations. I know this process can't take
much time or effort. I think of one of my students, who was an excellent student, that said, "Could you read all the documentation for datatool and tell me the highlights"? Uh, no.</span></p>
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<div>Maybe that will be possible soon. 3-5 years hence?</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Here is an example of how JAWS reads without alt text and a matrix equation (video)
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><a href="https://youtu.be/uN0RhcQw8RI">https://youtu.be/uN0RhcQw8RI</a>
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Here is an example of how JAWS reads with alt text and a matrix equation (video)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><a href="https://youtu.be/M4w_8yP88II">https://youtu.be/M4w_8yP88II</a>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">My tagged thesis posted on our institutional repository (PDF).<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><a href="https://works.bepress.com/tammy_stitz/6/">https://works.bepress.com/tammy_stitz/6/</a>
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<div>I'll have a look at this.</div>
<div>Thanks for the link.</div>
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<div>All the best,</div>
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<div> Ross</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Best Regards,<br>
Tammy Stitz<br>
Associate Professor, Bibliography<br>
Applied Sciences Librarian<br>
Email: <a href="mailto:tstitz@uakron.edu">tstitz@uakron.edu</a><br>
Office: 330-972-6192<br>
Science & Technology Library<br>
The University of Akron<br>
Akron, Ohio 44325-3907<br>
<a href="http://www.uakron.edu/libraries" target="_BLANK">http://www.uakron.edu/libraries</a>
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