This option is controlled through the Format (Table) menu but its effect is only seen in Print Preview.
Leadering affects the space between the end of the stub text and the beginning of the data cells in the table as shown below.
Each option gives a slightly different pattern. The default options are set through Preferences in the Edit menu.
There is also a separate pattern available for left and right stubs if applicable.
Note: Leadering is only displayed in Print Preview.
See Also: Modify Preferences