(a) https://support.google.com/chrome/answer/95647?hl=en (Chrome);
(b) https://support.mozilla.org/en-US/kb/enable-and-disable-cookies-website-preferences (Firefox);
(c) http://www.opera.com/help/tutorials/security/cookies/ (Opera);
(d) https://support.microsoft.com/en-gb/help/17442/windows-internet-explorer-delete-manage-cookies (Internet Explorer);
(e) https://support.apple.com/kb/PH21411 (Safari); and
(f) https://privacy.microsoft.com/en-us/windows-10-microsoft-edge-and-privacy (Edge).