code: static public BufferedImage getScratchImage() {
  		Graphics2D g = (Graphics2D)scratchImage.getGraphics();
  		g.setComposite(AlphaComposite.Clear);
  		g.fillRect(0, 0, GlyphPage.MAX_GLYPH_SIZE, GlyphPage.MAX_GLYPH_SIZE);
  		g.setComposite(AlphaComposite.SrcOver);
  		g.setColor(java.awt.Color.white);
  		return scratchImage;
  	}
docs: Returns an image that can be used by effects as a temp image.
  
  @return The scratch image used for temporary operations