#3dsr4 modeler
Once upon a time, I downloaded a stand-alone modeler that handled
b-patches from CIS and made some neat stuff with it. I think it was
called MORAY, perhaps from the GRAPHDEV forum. It's not an IPAS, but
it worked fine. You might check to see if it's still around. I
can't seem to find it just now, but my brain is kind of fried.