What does p.s. & p.s.s. etc mean in a letter?
P.S.S and P.S are the same. They stand for post script and are found on letters to mean you have included something else on top of what you had already written.
P.S. Means Post Script. If you have more "P's" it'd just be how many Post there are.Ex: p.p.p.s; post post post scriptHope I could help ;)
If you write a letter and you feel like you need to add additional information, you can add P.S. at the end of the letter and include that info.
I always though for short like "also"
P.S. Means post script. It is added on to a letter (script) after it has been completed (post). PSS doesn't mean anything. If you add another PS after the first it is P.P.S. For after after writing. Post=after Script=writing.