Very new to Photo and using both tutorials and the Work Book to get a grasp of the basics initially. I notice that both in the Tutorials and Work Book images, panels such as the Levels Panel, have in the very top left corner 3 small circles, red in the very left corner followed by 2 white. These are not displayed on my own software and assume I have missed something in the setup procedures. I note in the tutorials that the red spot is used to exit the panel and obviously I am concerned that being unable to follow this route will affect performance. Any help/advice would be much appreciated.