Thanks, Kevin, Karellen
Karrellen, Here is the full line
<package version="2.0" unique-identifier="bookid" xml:lang="it-IT" xmlns="http://www.idpf.org/2007/opf">
But after I used epub3-itizer correctly and reran access-aide, epubcheck no longer reports that error.
We have been using epub3 for quite a few years now, but we are now examining all our published epub files to see if they conform to the upcoming European Accessibility Act. Some of those files go back to 2013.
I had forgotten about epub2, so this example was a really valuable eye opener.
We will add the step of converting all our epub2 files to epub3.
Many thanks, Kevin
Jim
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