a note appended to a letter after the signature; postscript, PS
English Idioms Dictionary
Postscript - written at the end of a letter when you want to add some extra information After finishing the main part of the letter I wrote PS to include something very important that I had forgotten.
Bloomberg Financial Glossary
The two-character ISO 3166 country code for PALESTINIAN TERRITORY, OCCUPIED.
File Extension Dictionary
PostScript Works File (Microsoft Corporation) PaulShields Song/Module