How do I edit existing charts?
On the display page for your chart, tap the "Edit" button in the top right corner. You will be presented with the edit window for your chart. Make changes to the chart as you please, and then tap the "Save" button. Your chart will be saved, and any sets it appears in will be updated with the new chart.
Note: If you change the key in the edit screen, it will not transpose your chart.
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