Illustrated how to associate a MovieClip symbol with an ActionScript class that can be scripted. Two MovieClips are placed on the timeline but with different initializers so that the first clip is rendered horizontally and the second vertically. The position of each movie clip is altered using a MovieClip ActionScript event handler. 600 - this._width || this._x < 0) direction = -direction; } ]]> 600 - this._width|| this._x < 0 ) direction = -direction; } ]]>