The eBook does not apply the same style to visited and unvisited links.

Making it possible to identify links already visited compared to links not visited using styles is essential for minimum reading comfort.

Objectives

• Facilitate the identification of content already visited.
• Facilitate the identification of content remaining to be discovered.
• Encourage the discovery of new content

Implementation

• Do not apply the same default CSS styles for unvisited links (a or a:link selectors) and for visited links (selector a:visited).

Control

• In each page containing hyperlinks:
  • Control the presence and use of the :visited selector in CSS style sheets and the use of a style different from that applied to a or a:link or ;/li>
  • Control the absence of the :visited selector in CSS stylesheets to let the default style of the reading device apply

Validation

• Needs to be human verified.