[pstricks] Bezier curve

[Poul Riis]

The project below works, but if I replace pscurve with psbcurve I get the
following error message (even if an identical psbcurve command at the end
of the figure works):
Misplaced special graphics object command }
Why?

Poul Riis


\documentclass{minimal}
\usepackage[dvips,x11names]{xcolor}
\usepackage{pstricks}
\usepackage{pst-bezier}

\begin{document}
\pstVerb{/hf 5 def /bf 2.15 def /bl 0.5 def }
	\begin{pspicture}(-0.5,-0.5)(3.5,5.0)	
	\pscustom*[linecolor=Red3,fillstyle=solid]{
		\pscurve(!bf 0)(!bf hf 2 div)(!0 hf)
		%\psbcurve(!bf 0)(!bf hf 2 div)(!0 hf)		
		\psline(!0 hf)(!0 0)(!bf 0)
	}
	\psline[linestyle=dashed](!0 0)(!bl neg 0)(!bl neg hf)(!0 hf)
	\psbcurve[linecolor=Blue1,linewidth=1pt](!bf 0)l(!bf hf 2 div)(!0 hf)
	\end{pspicture}
\end{document}

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