Here are two screenshots of enpi at work:

In fact the first image is not a real screenshot, but a sample of the temporary file generated for previewing in the console. You can see the title line and article 5 of the Universal Declaration of Human Rights appearing in a Roman font; part of the title is bold and italicized. Article 18 is Helvetica, and article 19 is Courier text.

You can also use enpi as a lightweight substitute for your word processor in the GUI. Here you see the "source" (i.e. the tag-annotated plain text) being edited with Nedit, the terminal from which you start enpi, and gv showing the formatted output. In the GUI you can usually print out your text either from within enpi or through your viewer of choice.