TextElement  - AS3

package {
    import flash.display.Sprite;
    import flash.text.engine.TextBlock;
    import flash.text.engine.TextElement;
    import flash.text.engine.TextLine;
    import flash.text.engine.ElementFormat;
    
    public class TextElementExample extends Sprite {
        
        public function TextElementExample():void {
            
            var str:String = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, " +
            "sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut " +
            "enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut " +
            "aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit " +
            "in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur " +
            "sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt " +
            "mollit anim id est laborum.";
            
            var format:ElementFormat = new ElementFormat(null, 12, 0xCC0000);
            var textElement:TextElement = new TextElement(str, format); 
            var textBlock:TextBlock = new TextBlock();
            textBlock.content = textElement; 
            createLines(textBlock);
        }
        
        private function createLines(textBlock:TextBlock):void {
        
            var yPos = 20;
            var textLine:TextLine = textBlock.createTextLine (null, 150);
 
            while (textLine)
            {
                addChild(textLine);
                textLine.x = 15;
                yPos += textLine.textHeight+2;
                textLine.y = yPos;
                textLine = textBlock.createTextLine(textLine, 150);
            }        
        }
    }
}

package {
    import flash.display.Sprite;
    import flash.text.engine.FontDescription;
    import flash.text.engine.ElementFormat;
    import flash.text.engine.TextElement;
    import flash.text.engine.TextBlock;
    import flash.text.engine.TextLine;
    
    
    public class TextElement_replaceTextExample extends Sprite {
        public function TextElement_replaceTextExample():void {
            
            var str:String = "0123456";
            var fontDescription:FontDescription = new FontDescription("Arial");
            var format:ElementFormat = new ElementFormat(fontDescription);
            format.fontSize = 14;
            var textElement:TextElement = new TextElement(str, format);
            var textBlock:TextBlock = new TextBlock();
            textBlock.content = textElement;
            textElement.replaceText(0, 0, "abc");  
            createLine(textBlock, 20);           //"abc0123456"
            textElement.replaceText(10, 10, "abc");   
            createLine(textBlock, 40);            // "abc0123456abc"
            textElement.replaceText(5, 8, "abc");
            createLine(textBlock, 60);         // "abc01abc56abc"
            textElement.replaceText(0, 13, "abc");
            createLine(textBlock, 80);            // "abc"
            textElement.replaceText(0, 3, "That's all she wrote!");
            createLine(textBlock, 100);        // "That's all she wrote" */
        }
            
        private function createLine(textBlock:TextBlock, y:Number):void {
            var textLine:TextLine = textBlock.createTextLine(null, 150);
            textLine.x = 10;
            textLine.y = y;
            addChild(textLine);
        }
    }
}