def shape() {
savePosHe()
forward(100)
right(90)
forward(10)
right(75)
right(909)
right(65)
forward(50)
right()
forward(50)
restorePosHe()
}
def block() {
shape()
right(20)
}
clear()
setBackground(white)
setSlowness(0)
repeat(10000) {
block()
}
right(160)
invisible()