We're entering now the phase of sophistication. Here you learn how to customise the graphical appearance of all text on your sky map almost arbitrarily. You also learn how to achieve special text effects using the LaTeX language.
I can't explain LaTeX itself though. So I must assume that you've been taught the basics elsewhere. On the other hand, the LaTeX snippets that I will give in this chapter may be enough for many purposes.
It is not necessary to use the features described here, so it's still true that you needn't know about LaTeX in order to use PP3. However if you want to have full control, LaTeX competence is unavoidable.