Have you figured this out? Well, the image is that of the mouse and the right button hightlighted.  The right mouse button has one absolute univerasl function in all programs.  It can ONLY provide information.  It has NO OTHER FUNCTION.
    Thus, the right mouse button provides all information in any software about any point or entity on a window.  In a sence, the "right click" is the computer package's way of "talking" to you.  The right mouse button has an a.k.a. --- the "help button".