To display any rectangular section as a close-up:
•Use your mouse to drag a rectangle from the top left to the bottom right of the desired section to enclose it.
To zoom in or out on any location:
1.Use the mouse point to the position where you want to zoom in or out.
2.Hold down the CTRL key and then turn the mouse wheel forward or backward.
To enlarge the graphic in the X direction:
•Press and hold the CTRL key and use your mouse to drag a vertical band from left to right.
To enlarge the graphic in the Y direction:
•Press and hold the SHIFT key and use your mouse to drag a band from top to bottom.