The Access Keys used by this site are designated as follows:

• Alt+U ：Top of the functional areas, including site navigation, site search, subscribe to the newsletter, version selection, facebook fan group.
• Alt+N ：Navigation,containing the links to the major sections of this top of the page
• Alt+C ：Main content, providing the principal information of the page.
• Alt+L ：Navigation, containing the links to the major sections of this Left of the page
• Alt+B：Back
• Alt+I ：Home