Overview

Smoothing is an option for selecting whether or not to apply smoothing to inner curves in 3D viewport.
Enabling it will show smoothly folded inner curves.
Disabling it will show sharply folded inner curves.

Location

Inner Curve > Right Panel > Properties > Inner Curve Properties > Smoothing

Operation Method

1. Select the inner curves in All/ Curves Selection Mode.
2. Enable or disable the function vis Right Panel > Properties Tab > Inner Curve Properties > Smoothing.
3. You can check how smoothly the inner curves are applied in 3D viewport.
   

   ※ Note: Smoothing results can be checked only when enabling smoothing in 3D viewport.