An extensive collection of macros for generating PostScript that is
usable with most TeX macro formats, including Plain TeX, LaTeX, AMS-TeX,
and AMS-LaTeX. Included are macros for colour, graphics, pie charts,
rotation, trees and overlays. It has many special features, including a
wide variety of graphics (picture drawing) macros, with a flexible
interface and with colour support. There are macros for colouring or
shading the cells of tables. The package pstricks-add contains bug-fixes
and additions for pstricks (among other things). PSTricks uses
PostScript \special commands, which are not supported by PDF(La)TeX.
This limitation may be overcome by using either the pst-pdf or the
pdftricks package, to generate a PDF inclusion from a PSTricks diagram.
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