The top-left furthest node in the site-map represent the website as a whole.
Pressing it will open the site settings form with the following fields:
|Site name||This is likely to be used in templates to display name of the site|
|Description||A short description of the website. May be used for the website’s meta description, used by search engines|
|Default page||If not page in a site uses the URL
|Analytics code||Analytics code snippet (such as Google analytics) to track page visits.|