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 ZDecimal which sets Xmin = -4.7, Xmax = 4.7, Ymin = -3.1, and Ymax = 3.1. Each pixel represents 0.1 units. The tic marks on each axis are equally spaced.
Press to select ZSquare 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 ZStandard which which sets Xmin = -10, Xmax = 10, Ymin = -10, and Ymax = 10.
Press to select ZTrig which sets Xmin = -6.152285 about 2, Xmax = 6.152285 about 2, Xscl = 1.5707963 about /2, Ymin = -4, Ymax = 4 and Yscl = 1 in radian mode and Xmin = -352.5, Xmax = 352.5, Xscl = 90, Ymin = -4, Ymax = 4, and Yscl = 1 in degree mode.
Press to select ZInteger which sets Xscl = 10 and Yscl = 10, and centers the graph at the cursor location.
Press to select ZoomStat which defines the viewing window so that all data points are shown.
Press to select ZoomFit which adjusts Ymin and Ymax include the minimum and maximum y values for the selected functions.