Text user interface

TUI short for: Text User Interface or Textual User Interface (and sometimes Terminal User Interface), is a retronym that was coined sometime after the invention of graphical user interfaces, to distinguish them from text based user interfaces. TUIs are different from command-line interfaces in that, like GUIs, they use the entire screen area and do not necessarily provide line-by-line output. However, TUIs only use text and symbols available on a typical text terminal, while GUIs typically use high resolution graphics modes.
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