Solution 27950: Using the Window Menu Tools to Explore a Graph on the TI-Nspire™ Family Products.
What are the meanings of different Window settings on TI-Nspire family products?
To access Window/Zoom press [menu]  while in a Graph App.
Below are the names and their functionality:
1: Window Settings lets you specify the minimum and maximum values for the x-axis and y-axis. You can also set the axis scaling increment between tics.
2: Zoom - Box enables you to define an area that you want to enlarge.
3: Zoom - In enables you to define the center point of the zoom in location. The Zoom In factor is approximately 2.
4: Zoom - Out enables you to define the center point of the zoom out location. The Zoom Out factor is approximately 2.
5: Zoom - Standard automatically sets x-min, x-max, ymin, and y-max to center the origin. The x and y scale factors are equal. This is the default axes setting when Graphs & Geometry is first added to a page.
6: Zoom - Quadrant 1 automatically sets x-min, x-max, y-min, and y-max to emphasize the first quadrant. The x and y scale factors are equal.
7: Zoom - User if you have modified any window settings (such as x-min), Zoom-User saves the present settings. If you have not modified any window settings since last selecting Zoom-User, Zoom-User restores those settings.
8: Zoom - Trig automatically sets x-min and x-max to integer multiples of p. The x and y scale factors are equal.
9: Zoom - Data redefines the axes so that all statistical data points are displayed.
A: Zoom-Fit recalculates y-min and y-max to include the minimum and maximum y values of all functions between the current x-min and x-max. Hidden functions are not included.
B: Zoom-Square recalculates y-min and y-max so that the vertical scale is the same as the horizontal scale.
C: Zoom - Decimal recalculates x-min, x-max, y-min, and y-max so that the origin is centered and resolution is set to.1 (one tenth).
Please see the TI-Nspire family guidebooks for additional information.