It is strongly recommended that you use the site navigation, and not the back and forward buttons in your web browser, to navigate within a site.
The currently selected site will appear highlighted in a different color in the site navigation bar.
Overview on the Tool Menu takes you to the primary landing page for the site you're in. Overview pages can contain a list of recent announcements, recent message or forum discussions, calendar posts, and other selected resources for that specific site.
When you're using a tool, clicking on the tool's name in either the Tool Menu or the content frame takes you back to the first page of that tool and resets the tool to the landing page for the tool.
The Full-screen option will remove the sites banner at the top of the page. Click on the button again to restore the sites banner.
You can get help by clicking Help in the Tool Menu. You can also get contextual help by clicking the Help link within the tool content frame.