The Style feature has been enhanced to improve the quality of single natural tangency curves that don’t contain internal knots. Previously, two-point curves without internal knots would exhibit distortion, with an inflection at the curve’s free end when the other end’s tangency was defined. In Creo Parametric 11, the natural tangency calculation algorithm for curves with two interpolation points and a single tangency has been optimized, resulting in smoother, more natural curves without inflection.
Prior releases:

Creo 11:

Creo Parametric 11.0.0.0
User Interface Location: Click Style > Curve.
Benefits:
- Improved curve quality for single natural tangency curves without internal knots.
Additional Information:
- Limitations: None known.
- Replaces Existing Functionality: No.
- Configuration Option: None required.
For more information, Follow this link.
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