I never knew exactly what those "internal device" nodes were, and I think it was never explained, in the years I have been following this group.
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I suspect those internal nodes might be internal to certain transistor models.? For example, if you look at the VBIC model, the circuit is quite complex and has a handful of what appear to be internal nodes.? I tried once to see if those were the "internal device" nodes that this setting refers to, but was unable to see them.? It might be that the internal node in the Thevenin equivalent of a lossless inductor is not one of them either.
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Andy
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