Breadcrumbs
Included in Free
The trail shows where a reader is, for example Home > Acme App > Getting started > Create your account. For an article it starts at the product, then the section, then the article.
Settings
Section titled “Settings”Under Header and Breadcrumbs in the Customizer, Show breadcrumbs must be on. It is on by default. The trail is hidden on the front page.
Developers
Section titled “Developers”The same trail feeds the BreadcrumbList structured data. See Structured data. Breadcrumbs are built in inc/breadcrumbs.php (knowx_get_breadcrumb_items()).