Word: Fill to the end of the line

Press Ctrl+A to select all the text in the document. Select Tabs from the Format menu and click on the Clear All button. Create one tab just inside the right margin. For example, if the right margin is 6 inches, set it to 5.99 inches. Under Alignment, check Right. In the Leaders area, select periods, dashes, or underscores. Click on OK. Type a tab at the end of each paragraph, or use Find and Replace to replace ^p with ^t^p (^p represents a paragraph mark, and ^t represents a tab). Word will fill the line to the right margin with your leader character.