Some themes define link styles that are nearly or completely indistinguishable from the surrounding text. This can be readily be improved by underlining links.

WP Accessibility will ignore any link contained inside a nav region. nav regions are standard containers for navigation menus, and WP Accessibility assumes that these links are generally going to be intentionally designed to look interactive.

Examples of nav regions will usually include a site’s main menu, previous or next post navigation, and frequently footer navigation menus.