This website is based on the design principle of accessibility and uses keyboard shortcuts to strengthen the browsing convenience. Layout is divided in four areas：
Top-main area, midst-content area, Below-selection area
The shortcut key (Accesskey) of this website is set as follows：
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+Z：Links on the Below area include the sub-connections of individual.