Element: graphic_window.corners[2]
Element: graphic_window.corners[2]point
The 3-D points corresponding to the bottom-left and top-right corners of graphic_window. If the graphic window is scrollable then these corners are those of the virtual window, not just the visible part. To access only the corners of the visible part use window.view_corners.
They may be changed by the user only if the current view is a plan or elevation view.