unknown

Category: - -

Definition

Indicates that the author has not yet checked if the resource contains accessibility features.

Examples

Example 1 — EPUB 3

<meta property="schema:accessibilityFeature">
   unknown
</meta>

Example 2 — EPUB 2

<meta name="schema:accessibilityFeature"
      content="unknown"/>

Example 3 — Audiobooks

"accessibilityFeature": ["unknown"]

Explanation

The unknown value indicates the accessibility features of a publication are not known. Only use this value when a publication has not been evaluated for accessibility as it is not useful for readers.

Do not use the unknown value with any other accessibility feature values.

ONIX Mapping

The unknown value maps to list 196 code 08 ("Unknown accessibility").

Applies To

EPUB 3	EPUB 2	Audiobooks
Yes	Yes	Yes