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From: "T.V Raman" <raman@google.com>
To: yantar92@gmail.com
Cc: maciaschain@posteo.net, raman@google.com, theophilusx@gmail.com,
	emacs-orgmode@gnu.org
Subject: Re: Org mode export accessibility
Date: Mon, 27 Jun 2022 07:40:04 -0700	[thread overview]
Message-ID: <25273.49476.833965.837697@google.com> (raw)
In-Reply-To: <878rpj3dbq.fsf@localhost>

Thanks for looping me in.
I'm not subscribed to emacs-orgmode --- so feel free to forward if you
find the thoughts below materially useful.

As  a long-term org-mode user --- and an even  longer  term TeX
user: here are some thoughts:

1. Accessibility as word used in isolation has now become mostly
   meaningless, to be concrete one has to ask "Accessibility to whom"? 

2. So in the following, everything I say is with respect to users with
   visual impairments.

3. It's incorrect to define "Accessibility" in terms of a specific
   user access tool or technology -- that usage is marketing jargon
   for a specific Access Solution like a screenreader --- so I refrain in general from
   defining this in terms of Screenreaders.

With those meta-thoughts out of the way:

A: Org-generated documents are mostly well-structured documents, and
not in general a user-interface e.g. (WebApp); so  with regard to export --
either HTML or LaTeX/PDF ---  ARIA is mostly irrelevant.

B: The LaTeX->PDF pipeline *can* produce tagged PDF with respect to
document structure eg. Sectioning, but only if you use pdflatex or
pdftex i.e. LaTeX/Tex->dvi->[ps]->pdf is lossy with respect to
structure present in the markup; this is a short-coming of DVI which
predates  the thought of document structure making it through to the
output.

C: pdftex and pdflatex were built in the late 90's by a student in
Prague (Hanu Than? from memory) --- only reason I know this is that I
got Adobe to fund that project when at Adobe in the 90's. It's a very
good piece of work that essentially uses PDF directly as the "Device
Independent" format rather than the original dvi. DVI as designed in
the 70's was device-independent for the time, ie it did not hardwire
printer controls and could be mapped to various print mechanisms. For
the 90s, by which time Document Structure meant a lot more than being
some version of inkjet printer driver independent, the afore mentioned
project used PDF as the Device-Independent format --- and
leveraged the Tagged PDF bits from PDF 1.4 to achieve the result.

D: All that said, it is likely still easier to go from org->HTML
directly and produce content that is easier to machine-process  ---
rather than go through one more level of indirection via LaTeX and
PDF; however there may well be additional constraints in a publication
workflow, e.g. publisher wants to only publish final-form -- and yes,
in this case, HTML and PDF are both final-form.

E: Finally, note that in (D) I said "machine processable" not
"Accessible"; machine-processable is a pre-requisite to "repurpose "
what you publish, and making  that result usable by different user
communities is a direct consequence of suche machine-processability.


Hope this helps.

-- 
--Raman 
Thanks,

--Raman(I Search, I Find, I Misplace, I Research)
♉ Id: kg:/m/0285kf1  🦮

--

Thanks,

--Raman(I Search, I Find, I Misplace, I Research)
♉ Id: kg:/m/0285kf1  🦮


  reply	other threads:[~2022-06-27 18:20 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-23 14:30 About 'inline special blocks' Juan Manuel Macías
2022-05-23 15:20 ` Kaushal Modi
2022-05-23 21:06   ` Juan Manuel Macías
2022-05-24  2:36     ` Tim Cross
2022-05-24  2:51       ` Timothy
2022-05-24  6:54         ` Eric S Fraga
2022-05-26  7:30           ` Christian Moe
2022-05-24 15:09         ` Max Nikulin
2022-05-25  7:22           ` Ihor Radchenko
2022-05-25 17:05             ` Max Nikulin
2022-05-26  2:54               ` Merging paragraphs separated by comment lines during export (was: About 'inline special blocks') Ihor Radchenko
2022-05-24  3:56       ` About 'inline special blocks' Ihor Radchenko
2022-05-24 14:05         ` João Pedro
2022-05-26  4:56           ` Ihor Radchenko
2022-05-26 11:30             ` João Pedro
2022-05-26 12:20               ` Ihor Radchenko
2022-05-26 17:35                 ` João Pedro
2022-05-26 21:22                   ` About opening issues vs email [Was: About 'inline special blocks'] Kaushal Modi
2022-05-27  4:24                     ` Ihor Radchenko
2022-05-27  4:36                     ` João Pedro
2022-05-25 13:55         ` About 'inline special blocks' Juan Manuel Macías
2022-06-17  6:28         ` Ihor Radchenko
2022-06-17 19:49           ` Juan Manuel Macías
2022-06-19 12:47   ` Juan Manuel Macías
2022-06-19 19:30     ` Christian Moe
2022-06-19 20:15       ` Juan Manuel Macías
2022-06-19 22:18     ` Tim Cross
2022-06-20 16:57     ` Max Nikulin
2022-06-20 19:06       ` Juan Manuel Macías
2022-06-21 16:39         ` Max Nikulin
2022-06-21 18:19           ` Juan Manuel Macías
2022-06-20 22:46       ` Tim Cross
2022-06-26  4:07         ` Org mode export accessibility (was: About 'inline special blocks') Ihor Radchenko
2022-06-26  6:29           ` Tim Cross
2022-06-26 10:46             ` Org mode export accessibility Juan Manuel Macías
2022-06-26 10:54               ` Ihor Radchenko
2022-06-27 14:40                 ` T.V Raman [this message]
2022-06-30  7:53                   ` Ihor Radchenko
2022-07-07 14:18                     ` briangpowell
2022-07-07 14:42                       ` T.V Raman
2022-07-08  4:38                         ` Ihor Radchenko
2022-07-08 13:55                           ` T.V Raman
2022-07-09  3:39                             ` Ihor Radchenko
2022-07-09 13:20                               ` T.V Raman
2022-09-30 11:07                         ` Max Nikulin
2022-09-30 13:29                           ` T.V Raman
2022-09-30 16:43                             ` Max Nikulin
2022-09-30 16:55                               ` T.V Raman
2022-10-01  4:36                             ` Ihor Radchenko
2022-10-01 14:59                               ` T.V Raman
2022-10-02  2:54                               ` Org source in PDF (Re: Org mode export accessibility) Max Nikulin
2022-10-02  3:50                                 ` Timothy
2022-07-07 14:43                       ` Org mode export accessibility T.V Raman
2022-07-07 15:37                       ` T.V Raman
2022-07-08  4:33                       ` Ihor Radchenko
2022-07-08 13:54                         ` T.V Raman

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