{Making mathematical content accessible using Tagged \PDF\ and \LaTeX}
{Ross Moore}
{`Tagged \PDF' (more specifically \acro{PDF/UA}) is the method developed
by Adobe to allow the Web Content Accessibility Guidelines
(\acro{WCAG}~1.0 and \acro{WCAG}~2.0) to be satisfied within \PDF\
documents. In this talk I will show the latest developments on using an
extended version of pdf\TeX\ to allow Tagged \PDF\ documents to be
produced, satisfying both \acro{PDF/A} (archivability) and \acro{PDF/UA}
(Universal Accessibility).
I'll show examples which include quite complicated mathematical
expressions, fully tagged with \MathML, which can be `Read Aloud' in
Adobe's Acrobat and free Reader software. These will include
`real-world' documents containing such features as top-matter, nested
list environments, logos, watermarks and other pagination artifacts,
tabular material within mathematics, and some support of colour and
text-styling. A special math-indexing feature has been developed, which
allows the result of processing by external programs to be identified
and reused in successive \LaTeX\ runs. This indexing feature leads to
significant time savings when developing a full document over many
processing runs.
}