Hi Brian,

> I'm still reading the paper...

Yeah often time research papers can take a lot of effort just to read and understand.


> From my limited understanding, the purpose of such a dxf export in arc/line format would be useful?

Yes, there are some CNC machines that need to be driven only by arcs for curved pieces and don't deal with spline curves.


> Maybe tangents of NURBS curve would be exposed to scripting in the future?

I'll see if I can cook up some initial curve evaluating methods for the next beta.

- Michael