Sufficient access modes are identified in the [schema.org] accessModeSufficient property.
Repeat the property for each set of
sufficient access modes.
See the following section on
sufficient access modes for how to indicate that the available adaptations allow the content to be consumed in another mode.
An EPUB Publication might have more than one set of
sufficient access modes for its consumption depending on the types of content it includes (i.e., unlike accessMode, this property takes into account any affordances for content that is not broadly accessible, such as the inclusion of transcripts for audio content).
Not exact matches
The
access modes sufficient to consume an EPUB Publication express a broader picture of the potential usability than do the basic
access modes.
Since the Author has also included descriptions for all the images, she can also indicate that a purely textual
access mode is
sufficient to read the content:
The following examples show the metadata that would be added to an EPUB Publication that has textual and visual
access modes, is
sufficient for reading by text, contains alternative text and MathML markup, and has a flashing hazard.
accessModeSufficient — a set of one or more
access modes sufficient to consume the content without significant loss of information.
This metadata does not make clear whether a textual
access mode is
sufficient to read the entire publication, or whether a visual one is, only that two
modes are required by default.