- Right-click a chart.
- Select Format Chart Area.
- In the right pane, select the Chart Options tab, and then select Size & Properties.
- Select Alt Text.
- Type a description and a title.
TIP: Include the most important information in the first line, and be as concise as possible.
For more hints and guidelines for writing good alt text, visit the page Writing for Accessibility: Alt Tags and Long Descriptions.