Application Window and five MDI child windows are present in the user interface.

The application window is in disconnected state before user has logged in

The application window is in connected state when user has logged in

When transport level meets networking error or loses session, the application enters the reconnection state. But all controls of application window are the same as in connected state. The only prompt to reconnect appears in the toolbar and some actions are disabled. So, all descriptions related to connected state also describe reconnection state with some exceptions will be specified additionally.