mattgarrish
commented
4 years ago The section is about representing page boundaries from a static source when that static content is made reflowable (e.g., for greater usability across different screen sizes). PDF isn't reflowable, so suggesting its use would likely add confusion here.
You could use PDF if you want print layout equivalency, but you could also use fixed-layout EPUBs. That's a different problem, though.
In the "informative" section, it is useful to mention other solutions to the problem. This will bring more clarity to the topic of the section.
Proposed Change: Replace ‘The inclusion of page boundary locations helps bridge this disparity by ensuring that those using reflowable media are not disadvantaged by their choice.’ with ‘In this case, is possible to use the PDF family format (ISO 19005), which is tightly bound to the structure of the paper document. For publications EPUB you can use inclusion of provisions page boundary locations. Such a solution helps to overcome this discrepancy by ensuring that those who use tunable media are not at a disadvantage of their choice.’
(Clause 8.4.1.2)