Cookies are small text files which are sent by a web server to your browser and saved on the hard drive of your computer. Some cookies are deleted after the end of the browser session; i.e. after you close [...] open our web page, cookies that are technically required (session cookies) are saved on the hard drive of your computer. Cookies that are necessary to ensure technically correct and optimized provision [...] not wish us to recognize your computer again, you can prevent the saving of cookies on your hard drive by selecting the setting "Do not accept cookies" in your browser settings. To find out how this works