What is the site icon for?

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Работа с блоками
Оформление
Оплата
Команда
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Партнерская программа
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Размещение сайта
Интерфейс

The icon will be displayed next to the URL of your site in the users address bar. By default, the mobile version icon corresponds to the icon of the main site. You can download an individual icon by going to the "Appearance" section and selecting "Logo and site icon". Next via the "File Manager" select a previously downloaded icon from the list or load a new one. (The last line will change if we do not implement it)