Providing visual cues to differentiate between visited and unvisited links is essential for basic reading comfort and navigation.

Objectives

• Help users identify previously visited content.
• Help users identify content yet to be explored.
• Encourage the discovery of new content.

Implementation

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

Control

• For each page containing links, check if a specific style is applied to visited links to visually distinguish them from unvisited links.
• If no specific style is defined in the document, ensure that the reading system’s default style still clearly identifies visited links.