This particular panel displays information about a selected object. The two text boxes on the left display the width and height of the selected shape (if it's an irregular shape, then it displays the width and height of the smallest rectangular bounding box that can enclose it fully). The text boxes on the right display the X and Y coordinates relative to the plane of the stage.
Below that is a list of tracking information that displays information regarding the position of your mouse. Whereever your mouse is positioned on the page, this information will display the RGBA (Red, Blue, Green, and Alpha--or, the color values and opacity) of the stage where the mouse is, along with the X and Y coordinates on the stage.
You can actually use this to move and scale your shapes precisely. By selecting a shape and then entering new Width or Height values or new X and Y coordinates, you can position or size your shapes down to minute precision.
