The website has been designed with accessibility in mind, and uses Accesskeys to make browsing more convenient.

The Accesskeys used by this site are designated as follow:
Note: Use Alt for Internet Explorer accesskeys, and Shift + Alt for Firefox.
The Accesskeys used by this site are designated as follows：

• Alt+UUpper block, containing the links to the services of this site, search box, font size setting and versions of this site.
• Alt+CCenter block, providing the principal information of the page.
• Alt+ZBottom block, providing the principal information of the page.
• Alt+SSearch box in every page for searching this site.

←→ or ↑↓: Left-right or up and down keys to move the tab order.
Home or End→Can directly jump to label the first or last.
Tab:Stay on the label, you can useTabto browse the contents of that data, when faced with the radio buttons←→ or ↑↓keys to move the order of items .
Tab + Shift： Press Tab + Shiftto jump back on the amount of information; when you jump back to label the project can continue to use the ←→ or ↑↓keys to move the tab order.