If you click on this menu item, the Settings Window of the editor application will open
If option number 1 is enabled, when you are inserting a Window & Control variable, the Editor window minimizes itself. The other two options can be used to change the position of the Editor windows. These windows are the ones that appear when you add a variable or click on a menu button. The window in the image is one of these windows, and you can control its position using these options. If option number is selected, these windows will open in the middle of your desktop. If option number is selected, the windows will open in the middle of the Main window of the Editor application.