This is the lens. It gives you the magnified view. If you type Command — m the glass will “lock” over the current area of the screen. Type Command — m again to unlock. Up Arrow. Contract the Magnifying Glass Window to hide mouse and color information. Down arrow. Expands the Magnifying Glass Window to show the current coordinates of the mouse as well as the RGB color value of the pixel under the mouse. Zoom Control. Click the “+” or “-” to increase or decrease the magnification level. You can also slide the little gray triangle to vary the magnification level. I have no idea what this is. Oh, no! You found me. Yes, I’m the close box. I was trying to hide from you, but you found me out.