html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

var stage = acgraph.create('container');

​

var rectangle = stage.rect(20, 20, 100, 100);

rectangle.fill('#80CBC4');

​

// Creates a clip element

var clipArea = stage.createClip([10, 10, 50, 50]);

rectangle.clip(clipArea);