A TUI (text user interface) is a holistic model, view, and controller implemented using character graphics. TUIs, like WIMP3 GUIs, freely move the cursor around their rectilinear display, as opposed to line-oriented CLIs and their ineluctable marches through the scrolling region. Given the same interactive task

• A TUI implementation is almost certainly a smaller memory and disk footprint than a GUI,
• a good TUI implementation might introduce less latency, and
• a properly-done TUI implementation can often be significantly more portable.