Cookies are small pieces of information sent by a web server and stored on users computer. Cookies on this site are used for manual pages that require login and monitor visitors activity.
to identify a logged user, maintaining the user session website (after logging in);
to ensure the safety, for example used to detect fraud in the authentication within the service;
to collect information about the way of using web site (cookies on our site does not identify a user's personal information and have no effect on the software and hardware);
to store user-selected settings and customize the user interface (eg on the language or region of origin of the user, the font size, appearance, website, etc.);