 https://support.google.com/chrome/answer/00000?hl=en (Chrome); https://support.mozilla.org/en-US/kb/enable-and-disable-cookies-website-preferences (Firefox); http://www.opera.com/help/tutorials/security/cookies/ (Opera); https://support.microsoft.com/en-gb/help/00000/windows-internet-explorer-delete-manage-cookies (Internet Explorer); https://support.apple.com/kb/PH00000 (Safari); and https://privacy.microsoft.com/en-us/windows-00-microsoft-edge-and-privacy (Edge). 