The layout of this website is into four major areas--the auxiliary menu links, sub-menu links, and main content links. Based on the principles of web accessibility design, "access keys" (also known as "shortcut keys") have been included to reinforce the convenience of browsing.

Las combinaciones de acceso son las siguientes:
Alt+U– Upper auxiliary links area: this section contains a menu of auxiliary functions of this website.
Alt+L– Left sub-menu links area: this section contains links for each of the sub-menus.
Alt+C– Center main content display area: this part displays the information content for each web page.