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\input docstrip \keepsilent \preamble \endpreamble \askforoverwritefalse \def\ps{\perCent!} \generate{\file{pspicture.sty}{\from{pspicture.dtx}{package,dvips}} \usepostamble\empty \usepreamble\ps \file{pspicture.ps}{\from{pspicture.dtx}{ps}}} \endbatchfile