They treat CLIs as a subclass of TUIs. Underneath it all it is just a high-level decoupling API to replace ncurses/readline/.... The output becomes a window wit

They treat CLIs as a subclass of TUIs. Underneath it all it is just a high-level decoupling API to replace ncurses/readline/.... The output becomes a window with a packed-text buffer format. You can mix and match graphical windows with TUI(CLI) ones in the same client.