Auto Track Worksheets
Use the Auto track worksheets option to automatically show changes in the Grapher worksheet on the graph. To enable or disable Auto track worksheets, click the File | Options command. On the left side of the dialog, click on Plots. On the right side of the dialog, check or uncheck the box next to Auto track worksheets.
If Auto track worksheets is disabled, changes made to the worksheet do not show on the graph. This command only applies to changes made in the Grapher worksheet. If changes are made in a program other than Grapher, use the File | Reload Data command to update the data.