Option 6: Standard is the safety valve.
Zstandard will always return you to the standard window settings of
10 by 10.
Option 1: Zbox (Zoom Box) Use arrows to move the
+ to the upper left hand corner of your box. Hit ENTER to
anchor this corner. Use arrows to move to the lower right hand
corner of the box. Hit ENTER
You will now see an
enlargement of the area inside of the box.
Option 2: Zoom In Move the + near the section of the graph to be enlarged.
Press ZOOM #2. Nothing will happen until you press ENTER.