main
Display.Mode(0)
Canvas.Init
while TRUE
Canvas.Locate(0,0)
k=Key.Press
if k@KEY_X1
Canvas.Write("X1")
if k@KEY_X2
Canvas.Write("X2")
if k@KEY_X3
Canvas.Write("X3")
if k@KEY_X4
Canvas.Write("X4")
if k@KEY_START
break
if k==0
Canvas.Clear