When I convert documents from Microsoft Word to Adobe PDF files, the process works fine. However, when I set the reader to read aloud, it reads the superscripts like a regular number rather than a superscript like in HTML code. Am I missing the proper way to tag super and subscripts??
If the super and subscripts are references, for example to footnotes, they should be enclosed in Reference tags. The paragraph ...
Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.1 In 1991, Adobe Systems' co-founder John Warnock outlined a system called "Camelot"2 that evolved into PDF.
... would be tagged this way (underscores used for indentation).
___Portable Document Format ...
___In 1991, Adobe Systems' ...
___that evolved into PDF.
Sorry, I do not know of any way to automate this - although one of the advanced tools like CommonLook might have this capability. If the super and subscripts are something other than references, substitute <Span> for <Reference>.
PDF tags / elements are identified in the sub-clauses of clause 14 in the PDF reference (ISO 32000-1). In part 1 of this ISO standard there is no tag/element for superscript or subscript per se.