package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.events.Event;
    
    [SWF(width=450, height=450, backgroundColor=0x000022, frameRate=30)]
    
    public class FlashTest extends Sprite {
        public function FlashTest() {
            
            var nig:uint = Math.ceil(5 + Math.PI);
            var txtHello:TextField = new TextField();
            var txtFrame:TextField = new TextField();
            var MyDate:Date = new Date();
            var frame:Number = 0;
            
            txtHello.text = "Once were naggers" + nig;
            txtHello.width = 400;
            txtHello.height = 300;
            txtHello.multiline = true;
            txtHello.wordWrap = true;
            txtHello.textColor = 0xFF00FF;
            txtHello.border = true;
            txtHello.borderColor = 0x00FF00;
            txtHello.x = txtHello.y = 20;
            
            txtFrame.text = "text";
            txtFrame.width = 100; txtFrame.height = 20;
            txtFrame.y = 321; txtFrame.x = 20;
            txtFrame.textColor = 0xCFCFCF;
            txtFrame.border = true; txtFrame.borderColor = 0x0000FF;
            
            txtHello.appendText("ASDF");
            
            addChild(txtHello);
            addChild(txtFrame);
            
            txtHello.appendText(" append after addChild");
            
            txtHello.appendText("\n\nDate: " + MyDate);
            var i:Number;
            for(i = 0; i<10; ++i){
                printff(txtHello);
                txtHello.appendText(" " + i);
            }
                        function enterFrame():void{
    frame++;
    txtFrame.text = "Frame: " + frame;
}
            addEventListener(Event.ENTER_FRAME, enterFrame);
        }
    }
}

import flash.text.TextField;
import flash.display.*;

var link:boi = new boi();
var ganon:boi = new boi();
ganon.mah = "Die!";
link.n();
link.mah = "\nMah boi, this peace is what all true warriors strive for";

function printff(asdf:TextField):void{
    asdf.appendText(link.mah);
    asdf.appendText(ganon.mah);
}

class boi
{
    public var mah:String = "a";
    public function n():void{
        mah = "lelz";
        }
}

AS3 test