[pstricks] pst-circ2

[Joel Salomon]

How can I use the nodes defined within a \DeclareNewMultipole with
\PSTCMPNode from outside the component?  For instance, given:
	\documentclass{minimal}
	% Simple op-amp inverting buffer
	\usepackage{pstricks}
	\usepackage{pst-circ2}
	\begin{document}
	\pagestyle{empty}
	\begin{pspicture}(10,10)
		\psgrid[subgriddiv=1,griddots=10]
		\OpAmp(5,5)
		% more stuff goes here
	\end{pspicture}
	\end{document}
how would I add and properly connect the resistors R_i and R_f?  In
pst-circ version 1 I'd define 3 nodes P, N, and O and then type
\OA[options...](P)(N)(O).

--Joel