Zoom Box Option
The zoom box option uses a box to define a new viewing
window. While viewing a graph, press
.
Press 
.
Use the cursor keys to move the blinking cursor to
locate any one of the four corners of a box. Press
.
Move the cursor to the location of the corner of the box that is diagonal
to the first corner. As the cursor is moved, the new viewing box is visible.
When the box is the desired size, press .
Note: At any time the Zoom Box operation can be cancelled by pressing
.
The window settings are adjusted and the function is graphed in the new window.