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PostScript

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PostScript

In computing, a page-description language developed by Adobe that has become a standard. PostScript is primarily a language for printing documents on laser printers, but it can be adapted to produce images on other types of devices.

PostScript is an object-oriented language, meaning that it treats images, including fonts, as collections of geometrical objects rather than as bit maps. PostScript fonts are outline fonts stored in the computer memory as a set of instructions for drawing the circles, straight lines, and curves that make up the outline of each character. This means they are also scalable. Given a single typeface definition, a PostScript printer can thus produce a multitude of fonts.

The principal advantage of vector graphics over bit-mapped graphics is that object-oriented images take advantage of high-resolution output devices whereas bit-mapped images do not. A PostScript drawing looks much better when printed on a 600 dpi printer than on a 300 dpi printer. Object-oriented images also generally require less memory than bit-mapped images.



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? Mentioned in ? References in classic literature
 
To use an expression of Madame de Sevigne, who wrote about the same time, "there was a postscript to the letter;" and the most important part of the letter was contained in the postscript.
The Black Tulip by Dumas, Alexandre View in context
It was not in human nature--perhaps I ought to say it was not in the nature of a man who was in my situation--to refrain from showing some curiosity, on being asked to supplement a letter of recommendation by such a postscript as this.
The Two Destinies by Collins, Wilkie View in context
Bennet sent them word that they could not possibly have the carriage before Tuesday; and in her postscript it was added, that if Mr.
Pride and Prejudice by Austen, Jane View in context
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