PSTricks macros cannot be used with pdfTeX, since psTricks uses PostScript arithmetic, which isn’t in PDF. As such, a package viz., PDFTricks.sty has been written to circumvent this limitation, so that the extensive facilities offered by the powerful PSTricks package can be made use of in a pdfTeX document. This is brought by making use of the shell escape function available in the web2c TeX compiler, while this package is of no use to other commercial implementations.
