What is a site map?
A site map (or sitemap) is a list of pages of a web site accessible to crawlers or users. It can be either a document in any form used as a planning tool for Web design, or a Web page that lists the pages on a website, typically organized in hierarchical fashion.
Sitemaps make relationships between pages and other content components. It shows shape of information space in overview. Sitemaps can demonstrate organization, navigation, and labeling system.
Creating a site map for your website
On any page, click the Customize this page button
Click the +plus sign to add content
From the left column, click Add submenu
Alter the settings on the left to Expand all children
Click the Save button so that you have added a Main menu (expanded levels 1+)
Make sure to click the Save button at the bottom of the page to save your changes.
For an example, see the site map of this site.