On the Artologik web site both types of cookies are used, e.g. for the parts of the web site which require login and for the function of magnifying the text.
For services which do not require login, the service uses cookies to manage the choices you make and present relevant information based on that.
If you do not accept that cookies are saved in your computer, you can change the settings in your browser (Internet Explorer, Netscape etc.) so that cookies are not saved.