Source: The Collaborative International Dictionary of English v.0.48
Postscript \Post"script\, n. [L. postscriptus, (assumed) p. p.
of postscribere to write after; post after + scribere to
write: cf. F. postscriptum. See Post-, and Scribe.]
A paragraph added to a letter after it is concluded and
signed by the writer; an addition made to a book or
composition after the main body of the work has been
finished, containing something omitted, or something new
occurring to the writer. [Abbrev. P. S.]
[1913 Webster]
postscript
n 1: a note appended to a letter after the signature [syn:
postscript, PS]
2: textual matter that is added onto a publication; usually at
the end [syn: addendum, supplement, postscript]
Source: The Jargon File (version 4.4.7, 29 Dec 2003)
PostScript
n.
A page description language, based on work originally done by John Gaffney
at Evans and Sutherland in 1976, evolving through ?JaM? (?John and Martin?,
Martin Newell) at XEROX PARC, and finally implemented in its current form
by John Warnock et al. after he and Chuck Geschke founded Adobe Systems
Incorporated in 1982. PostScript gets its leverage by using a full
programming language, rather than a series of low-level escape sequences,
to describe an image to be printed on a laser printer or other output
device (in this it parallels EMACS, which exploited a similar insight
about editing tasks). It is also noteworthy for implementing on-the fly
rasterization, from Bezier curve descriptions, of high-quality fonts at low
(e.g. 300 dpi) resolution (it was formerly believed that hand-tuned bitmap
fonts were required for this task). Hackers consider PostScript to be among
the most elegant hacks of all time, and the combination of technical merits
and widespread availability has made PostScript the language of choice for
graphical output.
Source: The Free On-line Dictionary of Computing (26 July 2010)
PostScript
A page description language based
on work originally done by John Gaffney at Evans and
Sutherland in 1976, evolving through "JaM" ("John and Martin",
Martin Newell) at XEROX PARC, and finally implemented in its
current form by John Warnock et al. after he and Chuck Geschke
founded Adobe Systems, Inc. in 1982.
PostScript is an interpreted, stack-based language (like
FORTH). It was used as a page description language by the
Apple LaserWriter, and now many laser printers and
on-screen graphics systems. Its primary application is to
describe the appearance of text, graphical shapes, and sampled
images on printed or displayed pages.
A program in PostScript can communicate a document description
from a composition system to a printing system in a
device-independent way.
PostScript is an unusually powerful printer language because
it is a full programming language, rather than a series of
low-level escape sequences. (In this it parallels Emacs,
which exploited a similar insight about editing tasks). It is
also noteworthy for implementing on-the fly rasterisation,
from Bezier curve descriptions, of high-quality fonts at
low (e.g. 300 dpi) resolution (it was formerly believed that
hand-tuned bitmap fonts were required for this task).
PostScript's combination of technical merits and widespread
availability made it the language of choice for graphical
output until PDF appeared.
The Postscript point, 1/72 inch, is slightly different from
other point units.
An introduction
(http://cs.indiana.edu/docproject/programming/postscript/postscript.html).
["PostScript Language Reference Manual" ("The Red Book"),
Adobe Systems, A-W 1985].
[Jargon File]
(2002-03-11)
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