textscreen --Command, no inputs. Abbreviation: text
     This command applies only to the display turtle. It temporarily
     removes the turtle display from the screen, making the entire screen
     available for text display. The commands fullscreen and splitscreen
     will restore the graphics display. Note: On the Atari display, the
     picture on the screen is remembered, so that when you return to
     fullscreen or splitscreen mode, the picture returns to the screen. On
     other displays, the picture is forgotten, and you return to an empty
     graphics screen.