This website is committed to providing the greatest accessibility to all users. The Access Key function is offered as an alternative for users with disabilities.
The Accesskeys used by this site are designated as follows:
Accesskey M：Main menu, containing the links to the sub sections of this site.
Accesskey C：Center block, providing the principal information of the page.
Accesskey R：Right block,Inferior menu, containing the links to the sub sections of this site.
Accesskey F：Top block, containing the links to the informations of this site, Ex: Q&A, Sitemap, Map.