Legacy printPageNumbers should be adressed in the EPUB techniques #703
Description
As per Schema.org Accessibility Properties for Discoverability Vocabulary 4.2.1.5 pageBreakMarkers:
The value
printPageNumbersis considered a synonym ofpageBreakMarkers. Although its use is not formally deprecated, authors are strongly encouraged to use the more generalpageBreakMarkers.
The Display Techniques for EPUB Accessibility Metadata 2.0 have instructions to process only pageBreakMarkers, but should consider both.