A cookie is a small text file that is stored on your computer. There are two types of cookies.
One of these, "persistent cookies", saves a file permanently on your computer. This kind of cookies are used to control that the chosen language version is loaded.
The other type is called session cookies. While you are visiting the website, a cookie is sent between your computer and the server. Session cookies disappear when you close your browser.
If you do not want to accept cookies, you can adjust the settings on your browser so that it automatically declines to accept cookies or informs you every time a website makes a request to store a cookie. Using your browser, previously stored cookies can also be deleted. See the help pages on your browser for more information.