Not every user has a graphic environment with a mouse or other pointing device. Some users rely on a keyboard, or voice input to navigate links and activate forms. To support such users as much as possible this website supports a technical standard called Access Keys - essentially this is a way to define keyboard shortcuts that allow you to navigate to sections of the site without using the mouse.
How to use Access Keys
Simply press the F12 key and press either the left or right arrow keys to navigate to your desired menu option.