SpanElement  - AS3

package flashx.textLayout.elements.examples
{
    import flash.display.Sprite;
    import flashx.textLayout.container.ContainerController;
    import flashx.textLayout.elements.ParagraphElement;
    import flashx.textLayout.elements.SpanElement;
    import flashx.textLayout.elements.TextFlow;
    
    public class SpanElement_replaceTextExample  extends Sprite
    {
        public function SpanElement_replaceTextExample()
        {
            // create container and add it to the stage
            var container:Sprite = new Sprite();
            this.stage.addChild(container);
            // create TextFlow, ParagraphElement, and SpanElement objects
            var textFlow:TextFlow = new TextFlow();
            var paragraph:ParagraphElement = new ParagraphElement();
            var span:SpanElement = new SpanElement;
            var span2:SpanElement = new SpanElement;
            // add composer and container controller
            var controller:ContainerController = new ContainerController(container, 200, 700 );
            textFlow.flowComposer.addController(controller);
            textFlow.fontSize = 24;    // set font size
            // create text string and add it to the span
            var str:String = "0123456";
            span.text = str;
            // insert at the beginning 
            span.replaceText(0, 0, "abc");  
            span2.text = span.text + '\n'; 
            // append to the end of the text         
            span.replaceText(10, 10, "abc"); 
            span2.text += span.text + '\n';
            // insert string in the middle of the text
            span.replaceText(5, 8, "abc");
            span2.text += span.text + '\n';
            // replace text with string
            span.replaceText(0, 13, "abc");
            span2.text += span.text + '\n';
            // replace text with string
            span.replaceText(0, 3, "That's all she wrote!\n");
            span2.text += span.text + '\n';
            // display the results
            paragraph.addChild(span2);
            textFlow.addChild(paragraph);
            textFlow.flowComposer.updateAllControllers(); 
        }
    }
}