To see the menu of panels linked to a button, press and hold the right mouse button. Move the mouse up or down until the particular panel you are interested in is highlighted, then depress the button. Middle Mouse Button - The middle mouse button performs a sometimes useful feature. In some situations, the actual name of a channel in an abnormal state may be of more use to an expert on the phone. The main BaBar panel shows a summary of the major subsystems.
Every button is active and every color is showing the true state of the system.