资料来源 : pyDict

附言,后记

资料来源 : Webster's Revised Unabridged Dictionary (1913)

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.]

资料来源 : WordNet®

postscript
     n 1: a note appended to a letter after the signature [syn: {PS}]
     2: textual matter that is added onto a publication; usually at
        the end [syn: {addendum}, {supplement}]

资料来源 : Free On-Line Dictionary of Computing

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://www.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)