import turtle
    predef initTurtle(width, height)#0
    predef clipLine(x1, y1, x2, y2)#0
    predef clipRect(left, top, right, bottom)#0
    predef turnTo(angle)#0
    predef turn(angle)#0
    predef moveTo(x, y)#0
    predef move(dist)#0
    predef movep4(dist)#0
    predef penUp#0
    predef penDown#0
end
