The logs that are drawn to Gameobjects via LogsAtGameObject() or to screenspace via LogsOnScreen() are not affected by the "Clear" or the "Clear on Play" button in the Unity Editor console. Instead they always get cleared when you enter playmode (except when domain reload is deactivated). If you want to clear them on other occasions you can use this function. You can also use this function to manually clear the logs on entering playmode, if you have disabled "domain reload".