To ensure proper operation of the site, sometimes place small data files on your computer, so called «Cookies». Most major sites do the same.
What are the Cookies;
The cookies are small text files that a website stores on your computer or on your mobile device when you visit this site. In this way, the site remembers your actions and preferences (such as login, language, size font and other display preferences) for a long time, so you do not need to enter these preferences each time you visit the site or browse its pages.
How to check Cookies
You can check and / or delete the cookies according to your wishes. Details can be found here: aboutcookies.org. You can delete all cookies that are already on your computer, as well as to set most browsers manner not allow installing cookies. However, in this case, you may have to adjust yourself from yourself some preferences each time you visit a website, and also may not work and some services.