PostScript
WordNet

noun


(1)   Textual matter that is added onto a publication; usually at the end
(2)   A note appended to a letter after the signature
WiktionaryText

Etymology


post- + script

Noun



  1. An addendum to a letter, added after the author’s signature.

Usage notes


In a letter, to indicate the beginning of a postscript one often uses the abbreviation PS followed by a colon.
 
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