Zoom In Option
The zoom in option displays a smaller viewing area of the graph by magnifying
a portion of the graph around the current cursor location. Press 
.
Press 
.
(The zoom in option can also be obtained by using the 
to select option 2 and pressing 
.)
The location of the cursor will be the center of the magnified graph.
Press .
The window settings are adjusted and the function is graphed in the new
window.
To zoom in again, press ;
the zoom in option is still active. Quit by pressing 
.
Note: The factor
by which the graph is magnified is determined by the x factor and y factor
settings.