Add a symbol to a chart
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If you already have labels on a chart, click them once. If not, double-click on your chart.
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Click Show Labels. If you want to add a symbol to an axis, click either Show Y-Axis or Show X-Axis.
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Enter the symbol in either the Prefix or Suffix box.
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Click the green Save button on the top right corner of the chart menu.

Add a symbol to a pie chart
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If you already have labels on a chart, click them once. If not, double-click your chart.
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Click Show Labels.
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Select a format for your labels. For example, if you select the Currency format, a dollar sign is added to your labels. You can replace it with another currency symbol in the Prefix box.
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Click the green Save button on the top right corner of your chart menu.
