A computer language which has been developed to provide a uniform means of describing pages of text and/or graphics. It is widely used in desk-top publishing. PostScript-compatible printers contain a microcomputer system called a raster image processor (RIP) which can interpret a PostScript program and produce the relevant printed page(s).
For the page description language, see PostScript.A postscript (from post scriptum, a Latin expression meaning "after writing" and abbreviated P.S.) is a sentence, paragraph, or occasionally many paragraphs added, often hastily and incidentally, after the signature of a letter or (sometimes) the main body of an essay or book. An afterword, not usually called a postscript, is written in response to critical remarks on the first edition. The word has, poetically, been used to refer to any sort of addendum to some main work, even if not attached to a main work, as in Søren Kierkegaard's book titled Concluding Unscientific Postscript.
Email era
In the age of e-mail, postscripts have become unnecessary: any modifications or additions to the body of a letter may simply be inserted within the e-mail before sending, though the convenience of a post-scripted addition is always available. Postscripts in e-mails and on message boards are most often used when the author wants to add something totally unrelated to the main body of text, and may otherwise break the flow of the message.
Common postscript examples
Perhaps the most common postscript found in love letters is "P.S.
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