Explanation

Code 04 indicates that the publication conforms to the EPUB Accessibility 1.1 specification.

The value must be used together with a declaration for the version of WCAG 2 that the publication conforms to: 80 for WCAG 2.0, 81 for WCAG 2.1, or 80 for WCAG 2.2.

The WCAG 2 conformance level also must be specified: 84 for Level A, 85 for Level AA, or 86 for Level AAA.

Only for use in ONIX 3.0 or later.

Examples

Example 1 — EPUB Accessibility 1.1 conformance at WCAG 2.1 Level AA 
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>04</ProductFormFeatureValue>
</ProductFormFeature>
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>81</ProductFormFeatureValue>
</ProductFormFeature>
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>85</ProductFormFeatureValue>
</ProductFormFeature>
Example 2 — EPUB Accessibility 1.1 conformance at WCAG 2.0 Level A 
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>04</ProductFormFeatureValue>
</ProductFormFeature>
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>80</ProductFormFeatureValue>
</ProductFormFeature>
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>84</ProductFormFeatureValue>
</ProductFormFeature>
Example 3 — Link to certifier's report 
<ProductFormFeature>
  <ProductFormFeatureType>09</ProductFormFeatureType>
  <ProductFormFeatureValue>04</ProductFormFeatureValue>
  <ProductFormFeatureDescription>
   https://publisher.example.com/reports/a11y/isbn9780123456789.html
  </ProductFormFeatureDescription>
</ProductFormFeature>
—

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