Import DataDoctor > Geometry Creation Tools > Creating Datum Curves > About Curves in IDD
  
About Curves in IDD
In IDD, you can create and modify curves. No parent-child relationship exists for curves created in IDD. However, you can create constraints on curve ends that limit their modification in the IDD environment after their creation.
You can create the following curves in IDD:
UV-curves by projection
UV-curves by the intersection of surfaces
UV-curves through points on surfaces
UV-curves isoline on surfaces
Sketched curves
3D curves through points