Use the drop-down lists to specify the appearance of the left, right, top, and bottom borders of the item. If you change the Default values, the values for all four borders are automatically set to the default value.
Here, you can enter any expression that you want to use as a bookmark for this report item in the document map. However, this only makes sense if the report item is located inside a composite group that is repeated on a specific value.
For more information on the document map, see Document Map.