HI Forum. I'm watching the following Rhino 2D to 3D tutorial series which I find very good. Lots of interesting techniques for the relative beginner in this endeavour. I'm unable to find a way to continue a curve in the same was as Rhino bi-arc command ? Link below starts at the bi-arc command example. Thank you.

https://youtu.be/HHR2Uhcef4Q?t=145