This is an example of a Document Page - Topic A-Z Navigation, which uses the Document List component and Document List - No Thumbnail - No Filter component template.
It overrides and replaces the left navigation with one that you generate, and also includes an A - Z Index at the top of the left navigation column.
We recommend rarely using this page type on your site, except when business needs demand it, because the change to the left navigation can be very confusing for users. The page also lacks a breadcrumb, which means it is very easy for users to become disoriented regarding their location within your website.
