SetCoreGUIOpen
Method
Opens/Maximize or Close/Minimize a core GUI. When closed, this simply hides the GUI from the user, but does not disable it, which means the GUI can still be opened by the user via hotkeys.
If the GUI is currently disabled and an attempt is made to open the UI, it will not be opened, nor will it be opened if it is eventually enabled. However, closing the GUI even when it is disabled will still mark it as closed.