This website was designed and programmed in accordance with the guidelines of the WAI (Web Accessibility Initiative,, which sets international standards for the creation of web content accessible to everyone.

Access Keys

Most browsers generally enable you to go directly to specific links by pressing certain key combinations (access keys) defined on the website.

For example, it works in Windows by pressing Alt + the access key (in Internet Explorer you must also press the intro key); in Macintosh, it works by pressing Ctrl + the access key.

On this site, the following access keys are available:

  • Key 1: Access to the site HOME page
  • Key 2: Direct access to the contents of the site
  • Key 3: Access to the English language version 


All illustrations on this site have the ‘alt’ attribute with their description in text format, except for purely decorative imagery, where this "alt" attribute is empty.


Most links whose text does not fully describe the destination have title attributes with an explanation.

Some browsers (such as JAWS, Home Page Reader, Lynx, and Opera) can extract the list of links on the current page and allow the user to navigate directly from the list. With this in mind, the links are not duplicated and if they are, it is because they access the same content.

No JavaScript pseudo-links are use. All links can be followed in any browser, even if JavaScript is disabled.

Only links to external sites will open in a new window. In such cases, we cannot guarantee that the contents of those external websites can be accessed by all devices.

Graphic design

This website makes heavy use of style sheets for the page layout; tables are only used when required to display data (tabular data).

If your browser does not use style sheets, the contents of the page are still readable.

Acronyms and abbreviations

This site makes use of certain acronyms and abbreviations. Visual browsers that support this functionality will see a dotted line under an acronym or abbreviation. When the cursor is run over them, an extended description of the meaning of the acronym or abbreviation appears.