I recently discovered that what I thought were called attributes in actionscript (as3) were actually called metadata tags. An example of metadata tags in an actionscript class file would be:
package
{
import flash.display.Sprite;
import flash.events.Event;
/**
* ...
* @author Alexander R. Torrijos
*/
[SWF(backgroundColor="#ffcc00", frameRate="30", width="640", height="480")]
public class Main extends Sprite
{
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
// entry point
graphics.beginFill(0xff0000);
graphics.drawEllipse(100, 100, 100, 100);
graphics.endFill();
}
}
}
The highlighted code above is called a metadata tag in actionscript. In other programming languages they are usually referred to as attributes. When searching for information about attributes in actionscript remember to use the keyword metadata instead of attributes.
For some information on actionscript metadata you may want to check out AS3 Metadata Tags in Flex 4