A default data format is the arrangement of data for a specific shape type. In your maps, you can save a default data format for all default shapes. For information about how to format a shape to display data, go to Display data on a map.
You can apply default data formats to existing shapes.
After you create a data format, you can save it as a custom data format that you can apply to other shapes.
When you apply a custom data format to a shape, it copies the data format from the custom data format to the selected shape.