User interface modes User interface modes in Genero allow you to adapt the application rendering to different types of display. Text mode renderingText User Interface (TUI) allows you to run an application in text mode, that is, on a terminal instead of using a display client.Graphical mode renderingThe Graphical User Interface (GUI) mode displays applications on desktop workstation, web browsers and mobile front-end platforms. The graphical mode supports native, universal, and traditional rendering modes.