Leaders are those dots and dashes that stretch from one portion of text to another, letting the reader know that the two groups are related. Leaders are used commonly on small lists or table of contents. For example:
Chapter 1.........How to use leaders
You could simply press the period button repeatedly to produce leaders (as we've done above), but you'd quickly find that not all items in the list line up properly. The solution is to use the Leaders feature when setting tab stops. When you're ready to enter a list that contains leaders, choose Format, Tabs to open the Tabs dialog box. Set the first tab stop where the left side of your list will be positioned, and the second where your right side will be positioned. Then click the button under Leader that corresponds to the kind of leader line you like and click OK.