Flex – Working with display objects

http://help.adobe.com/en_US/as3/dev/WS5b3ccc516d4fbf351e63e3d118a9b90204-7e3d.html

http://livedocs.adobe.com/flex/3/html/help.html?content=Part2_DevApps_1.html

->Programming ActionScript 3.0 -> Getting started with ActionScript -> Working with objects

Line with arrow

http://www.dncompute.com/blog/2008/07/17/graphicsutil-a-utility-class-for-drawing-arrows.html