t.forward(100)
Move the pen forward by 100 pixels
t.backwards(100)
Move the pen backwards by 100 pixels
t.left(90)
Angle the pen to the left by 90 deggress
t.right(90)
Angle the pen to the right by 90 deggress
t.pencolor("red")
Change the pen color to red
t.pensize(10)
Change the pen size to 10px