Graph Window has 2 zones – Plotting Zone (to the left) and Definition Zone (to the right). You can resize and rearrange zones by drugging and right-clicking zone separator.
The window has menu, toolbar and status line. Menu and toolbar are used to perform various operations. When you type in curve description, status line reminds of proper format. The right part of status line displays Cartesian co-ordinates of cursor in the Plotting Zone.