A cookie is a small text file stored on the visitor's computer and containing information. Cookies are usually used to improve the site for the user.
There are two types of cookies:
At www.ivl.se, cookies are used to provide access to different functionality, such as logging in, remembering if the user accept cookies and to measure and analyse site traffic with Google Analytics.
More information about cookies can be found at http://www.pts.se/en/english-b/regulations2/legislation/electronic-communications-act/q/qa-about-cookies-for-users/