Displaying nonprinting characters
You can display nonprinting characters, such as spaces, tabs, and formatting codes. For example, if you choose to display nonprinting characters, each space you add appears as a tiny black dot, non-breaking spaces appear as a circle, and em spaces appear as a line. When enabled, nonprinting characters are displayed only when you add or edit text.
To display nonprinting characters |  |
|
•
|
|
You can also display nonprinting characters by clicking Tools
 Options, and choosing Text in the list of categories. You can then enable the Show nonprinting characters check box. |