[pstricks] Linewidth as postscript parameter

[Poul Riis]

Is it possible to define the linewidth as a postscript parameter,
something like the following (which does not work)?

Poul Riis


\documentclass[a4paper,12pt]{article}
\usepackage[x11names]{xcolor}
\usepackage{pstricks-add}

\begin{document}
\begin{pspicture}[bgcolor=Cornsilk1](-5,-5)(5,5)
\pstVerb{/lw 0.2 def}
\psline[linewidth=lw](-4,-4)(4,4)%Does not work
%\psline[linewidth=0.2](-4,-4)(4,4)%Works
\end{pspicture}
\end{document}

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