Shuts down the display.
Most graphical displays don't react too kindly to you just switching them off - and can even blow the display. This command should therefore be used, where possible, as it shuts the display down properly.
Perhaps you could use a push button, which when pressed, does things like shutting down the display and turning off motors etc and then enters an infinite loop.
Once shut down the display cannot be woken up again via software until the power is turned back on again.
Where GraphicDisplay is the name you have given to the device in Project Designer.