Breadcrumbs
When using the default layout, all pages except top-level pages will automatically have a list of ‘breadcrumbs’ at the top, linking to the parent page and to any higher-level ancestors.
The default layout does not provide an option to suppress the list of breadcrumbs. To do that, you would need to define a new layout, or override the file _includes/components/breadcrumbs.html
(e.g., with an empty file).