Here you can specify files or URLs which should be included in the sitemap, but do not belong to your Blog/WordPress.
For example, if your domain is www.foo.com and your blog is located on www.foo.com/blog you might want to include your homepage at www.foo.com
Note: If your blog is in a subdirectory and you want to add pages which are NOT in the blog directory or beneath, you MUST place your sitemap file in the root directory (Look at the "Location of your sitemap file" section on this page)!
URL to the page: Enter the URL to the page. Examples: http://www.foo.com/index.html or www.foo.com/home
Priority: Choose the priority of the page relative to the other pages. For example, your homepage might have a higher priority than your imprint.
Last Changed: Enter the date of the last change as YYYY-MM-DD (2005-12-31 for example) (optional).