Controlling Splines - 3DS Max

https://knowledge.autodesk.com/support/3ds-max/learn-explore/caas/CloudHelp/cloudhelp/2018/ENU/3DSMax-Modeling/files/GUID-E7E1EBFF-5371-4835-8B7C-A34FEE225F15-htm.html





Bezier checked will create a bezier vertex.
right-clicking deselects spline