Our Sitemap is designed to help you find any page, even if it isn't listed within the Navigation Bar. Over the years various websites started being built with a "sub-page" that was only linked to a more prominent page. Because of this system, the "sub-page" was never shown or listed within the Navigation Bar display.
Someone thought up the idea of creating a "Sitemap" so ALL pages would be listed in their proper category and shown on that page - a great idea that has really helped humans and the search engines find all the various pages of information.
Nothing worse than having some wonderful information that can't be found! Years ago, you had to search every page to look for a second tier or sub page!
The sitemap of today solves all of that!