Someone

.flash filename="action.swf" bbox=300x300 fps=25

  #.box mybox color=blue fill=green width=100 height=100
  .circle mybox color=blue fill=green r=50 #width=100 height=100
  .put mybox

  .frame 1
    .action:
      _root.angle += 0.05;
      mybox._x = 100*Math.cos(_root.angle)+100;
      mybox._y = 100*Math.sin(_root.angle)+100;
    .end

  .frame 2
    .action:
      gotoFrame(0);
      Play();
    .end
  .frame 3

.end