{Ross Moore} {Tagged \PDF, derived \HTML\ and aspects of~accessibility} {From a well-tagged document, conforming to the \acro{PDF/UA} standard, an \HTML\ version can be derived. Accessibility is primarily about providing convenient access to information for any human reader, subject to a disability or otherwise. Thus supportung different methods of navigating the document is paramount. In a pre-prepared video, we'll look at different methods of navigating through {\PDF}s, using different software tools, and also the derived \HTML. This includes primarily visual methods, as well as keyboard-based navigation. Acronyms and internal hyperlinks more generally, are extended using attributes in accordance with \acro{WCAG} and \acro{ARIA} recommendations, for making information more readily available to persons with disabilities. These allow a reader to more easily make the decision about whether to follow the link to access an explanation, or continue reading without interruption. Furthermore, with due care being taken when coding technical information, inherent semantics can be carried through the processing and exhibited within the resulting web page, again in accordance with \acro{WCAG} and \acro{ARIA} recommendations. An example is for sequences of authors\slash panelists and their affiliations presented using footnotes in the visual \PDF\ view.}