3.2. Toolbar
Each window with graphs will have a toolbar
at the upper left of the window. These tools can be used to zoom, pan, and query the data in the graphs.

·
Allows zooming in on data in the graph.

·
Allows zooming out on data in the graph.

·
Allows panning in the graphics window.

·
Allows data values to be probed by clicking on the data points in the graphs.
