Qualebook

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Interoperability

16

The ebook is clearly identified by a visible EAN or ISBN-13 code

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20

Chapters and book sections are identified using ARIA roles and EPUB types

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21

Provide a link to each standard or accessibility profile the ebook claims to follow.

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26

Embedded elements provide appropriate fallbacks

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79

The ebook includes a compliant EPUB navigation document (`nav.xhtml`).

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81

Scientific formulas are provided using the appropriate markup language

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86

The ebook includes backward-compatible EPUB 2 equivalents where necessary

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87

Content files remain within the file size limits of legacy reading systems

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