Hover over a chart series and a tooltip will popup that shows the series name, the date, and the value
of the nearest point.
Zoom into a specific area of the chart by clicking and dragging anywhere on the chart to draw a rectangle
around the area to zoom into. Reset the zoom by double-clicking anywhere on the chart.
Toggling Series On or Off
You can toggle the visibility of a series by clicking on the series name in the legend. If a series has
been set to invisible, the name of the series will appear in the legend with strikethrough text.
When series are toggled on or off the chart will re-scale the Y-Axis as necessary.
Saving a Chart as an Image
Click the "Export Chart as Image" button to convert the chart to an image and to display that image in a separate window. To save
the image to a file, right-click anywhere on the chart in that window and click on the 'Save image as...' option.