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
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
Zoom Standard which
which sets xmin = -10, xmax = 10, ymin = -10, and ymax = 10.

Press to select Zoom Previous
which goes back to the previously used window.

Press to select Zoom Fit
which adjusts the window in the y direction to view an entire graph for
the xmin and xmax values.

Press to select Zoom Square which
adjusts xmin and xmax so that the tic marks on the x axis are spaced the same as
those on the y axis. This makes a
circle appear round.

Press to select Zoom Trig
which sets x =
/24, xscl to
/2, ymin = -4, ymax = 4, and yscl = 0.5
in radian mode.

Press to select Zoom Decimal
which makes each pixel represent 0.1 unit. The tic marks on each axis are equally
spaced.

Press
to select Zoom Recall
which recalls the window settings stored with Zoom Store.

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 zoom out by enlarging the x values alone.

Press
to zoom out by enlarging the y values alone.

Press
to select Zoom Integer
which sets xscl = 10 and yscl = 10, and centers the graph at the cursor location.

Press
to select Zoom Store
which stores the window settings for later use.