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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 4 areas:
1. the main menu zone at the top、2. the menu zone on the left side
The following keys are set as the Access keys ( or speed keys) of this website.:
Alt+U:Upper block, containing the links to the services of this site, search box, font size setting and versions of this site.
Alt+L:Links on the Left area.

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