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 Data which adjusts the window settings to fit the data.

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.