[pstricks] inside arrows

[Zbigniew Nitecki]

Which curve-drawing macros allow inside arrows?  The following code  
produces no arrows:
*********************************************
	\begin{pspicture}(-0.5,-0.5)(3.5,3.5)
		\pscurve[linewidth=1.2 pt, arrowscale=2, ArrowInside=->,  
ArrowInsideNo=3]%
			(0,0)(1,2)(2,1)(3,3)
	\end{pspicture}
*************************************************
ditto if the \pscurve is replaced by a \psplot, but \psline works  
fine.  Is there a way to create inside arrows for either a \pscurve or  
a \psplot?

Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155

telephones:
Office    (617)627-3843
Dept.    (617)627-3234
Dept. fax    (617)627-3966
http://www.tufts.edu/~znitecki/

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