[pstricks] pspicture shift

[David Arnold]

All,

I don't understand why shift=-1 does not seem to have an affect on  
this code when I compile with ps4pdf.

\documentclass[12pt]{article}

\usepackage{pst-pdf}
\usepackage{pst-bar}
\usepackage{pstricks-add}
\usepackage{pst-plot}
\usepackage{pst-tree}

\begin{document}

\begin{itemize}
\item \psset{unit=0.125in}
	\begin{pspicture}[shift=-1](-8,-2)(8,0.5)
	\psaxes[arrowscale=1.5,arrows=<->,yAxis=false,labels=none](0,0)(-8,0) 
(8,0)
	\uput[270](-7,0){$-7$}
	\uput[270](0,0){$0$}
	\uput[270](7,0){$7$}
	\psdots*[linecolor=red,dotsize=3pt 3](-2,0)(-3,0)(-4,0)(-5,0)
	\end{pspicture}
\item Hello.
\end{itemize}

\end{document}

D.