Digital books often contain data structured in tables. Beyond the content of individual cells, the table layout conveys information by establishing relationships between data points. These tables must be properly marked up to ensure these relationships are accessible.

Objectives

• Allow assistive technologies to present table data intelligibly by conveying the logical relationships between content and headers.
• Improve content accessibility for users with disabilities.

Implementation

• Use the HTMLelement and the scope attribute to mark up header cells and define their association (use scope=“col” for column headers and scope=“row” for row headers).

Control

• Check the source code of the EPUB HTML documents or use the ACE accessibility checker.