LionessaBrian if you look at the top of the page you will see the word icons. Click on the word "Help" You will get a drop down menu. Look down that and you will see the word "Glossary."
Click on Glossary and you will see a list of all sorts of different abbreviations used on the net and in the lifestyle.
You will find PNP there along with much more.
Hope this helps.
Nessa