Zoom Menu
While viewing a graph, press
to view the
zoom menu.

Press the menu key associated with an option or use the
key to view more options.
Press
to select
Zoom Box which defines a viewing window by
selecting the corners of the box.
Press
to select Set Factors
which determines the factor by which the zoom in and zoom out
options magnify or reduce a graph.
Press
to select
Zoom In which displays a smaller viewing area of the
graph; magnifying the current graph.
Press
to select
Zoom Out which displays a larger viewing area of the
graph; reducing the current graph.
Press
to select Auto Zoom
which adjusts the window in the y direction to view an entire graph for
the xmin and xmax values.
Press
to select
Zoom Original which
which sets xmin = -10, xmax = 10, ymin = -10, and ymax = 10.
Press
to select Zoom Square which
adjusts xmin and xmax so that the scale marks on the x axis are the same as
those on the y axis. This makes a circle appear round.
Press
to select Zoom Round which
adjusts xmin and xmax so that pixels on the screen correspond to
round(er) values of x and y.
Press
to select Zoom Integer
which sets xscl = 10 and yscl = 10, adjucts the x and y range so that
each pixel represents 1, and centers the graph at the cursor location.
Press
to select Zoom Previous
which goes back to the previously used window.
Some other pre-defined veiw windows are avalable in the window settings.