The best way to become familiar with custom formats is to try your own experiments. Just remember that Excel stores each format you try. If you find that your list of custom formats is getting a bit unwieldy or that it's cluttered with unused formats, you can delete formats by following the steps outlined here:
1. | Choose Format, Cells, and then choose the Number tab in the Options dialog box. |
2. | Choose the Custom category. |
3. | Select the format in the Type list box. (Note that you can delete only the formats you've created yourself.) |
4. | Click Delete. Excel removes the format from the list. |
5. | To delete other formats, repeat steps 2–4. |
6. |