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This website is based on the design principle of accessibility and uses keyboard shortcuts to strengthen the browsing convenience. Layout is divided in five areas：
Top-main area, midst-content area, Left-selection area, right-selection area and bottom-related information area.
Accesskey guided as below：

• Alt+U: Links on the top area, there are covering all kinds of languages script and main items.
• Alt+C: Main content area shows the content of each page.
• Alt+L: Links on the left area include the sub-connections of individual.