Flash MX 2004.
drawingLayer.beginFrame()
None.
Nothing.
Method; erases what was previously drawn using the drawingLayer and prepares for more drawing commands. Should be called after drawingLayer.beginDraw(). Everything drawn between drawingLayer.beginFrame() and an drawingLayer.endFrame() remains on the Stage until you call the next beginFrame() and endFrame(). (In this context, frame refers to where you start and end drawing; it does not refer to timeline frames.) You typically use this method only when creating extensible tools. See drawingLayer.beginDraw().