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

Use to select one of the nine options.

**1. Auto** redraws the graph to match new window.

**2. Box** defines a viewing window by selecting the corners of the box.

**3. In** displays a smaller viewing area of the graph; magnifying the
current graph.

**4. Out** displays a larger viewing area of the graph; reducing the current
graph.

**5. Default** sets xmin = -10, xmax = 10, ymin = -10, and ymax = 10.

**6. Square** 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.

**7. Dec** sets each screen pixel to 0.1 units.

**8. Int** sets each screen pixel to 1 unit.

**9. Stat** displays data in a statistics list as discete points.