size = 11000 x 8000
rate = 12
bgcolour = RGB(255,255,255)

SHAPE square(-1020 -1020 1020 1020) {
      	  fillStyle yellow=RGB(255,255,0)	
          lineStyle thickBlack=[40, RGB(0,0,0)]

  	  fillStyle1 = yellow
	  lineStyle = thickBlack

	  move -1000, -1000
	  line 2000,0
	  line 0,2000
	  line -2000,0
	  line 0,-2000
}


SPRITE rotate {

    place square at 1 
    show

J   for(int i=0;i<10;i++) {
J     double s = Math.PI/3;
J     if(i%2==0) {

        change at 1 {skew = %s}

J     }
      show

J   }
}

place rotate at 1 {trans = [2000 2000]}
place rotate at 2 {trans = [2000 6000]}
place rotate at 3 {trans = [6000 6000]}
place rotate at 4 {trans = [6000 2000]}

show