Among the information available about the book, the presence of content other than textual and the accessible alternative available are indicated.

Digital books can contain things other than text, such as images and other media. These other elements may have a textual alternative. The presence of these media and their possible alternatives must be specified.

Objectives

• Allow us to anticipate whether the book can be consulted in its entirety in a given context
• Limit the risk of complaints

Implementation

• Associate the information with the book
• Include the information on the book's presentation page

Control

• Check the presence of an indication on:
  • The presence of media other than text.
  • The presence of textual alternatives for these media.

Validation

• Needs to be human verified.