Hi Art,

To restore the horizontal axis labels in your line chart, you can follow these steps:

1. Click on the chart to select it.
2. Go to the "Chart Tools" tab in the ribbon at the top of the screen.
3. Click on the "Layout" tab.
4. Look for the "Axes" group and click on the "Axes" dropdown menu.
5. Select "Primary Horizontal Axis" and then click on "More Primary Horizontal Axis Options" at the bottom of the dropdown menu.
6. In the "Format Axis" pane that appears on the right side of the screen, go to the "Axis Options" tab.
7. Under "Axis Labels", make sure that the "Label Position" is set to "Low" or "Next to Axis".
8. If the "Label Position" is already set correctly, then check the "Axis Labels" checkbox to show the labels.
9. If the "Axis Labels" checkbox was already checked, then make sure that the "Label Position" is set correctly.
10. Click "Close" to apply the changes.

This should restore the horizontal axis labels in your line chart. Let me know if you have any other questions or if this doesn't work for you.

Best regards,
[Your Name]