Creo Reverse Engineering (Restyle) > Curve Constraints in Restyle > To Manipulate Curve Constraints
  
To Manipulate Curve Constraints
You can manipulate curve constraints as follows:
Select a curve and click Restyle > Display Constraints. Alternatively, select a curve, right-click, and select Display Constraints. Symbols that represent the constraints between the curves are displayed.
If required, you can change the curve constraint. Select the constraint symbol, right-click, and select a new constraint.
If required, you can swap the direction of the leader and the follower curves. Select the constraint symbol, right-click, and select Flip Leader.
If required, you can delete the constraint. Select the constraint symbol, right-click, and select Delete.
Select a curve and click Restyle > Detach to detach a curve on facet from the facet feature or to detach a curve on surface from the surface. Alternatively, select a curve, right-click, and click Detach.
Select a curve, and click Restyle > Modify Shape. Alternatively, select a curve, right-click, and choose Modify Shape. You can modify the shape of the curve by freely dragging the control points on the curve.
In the case of Position constraint, you can change the shape of both the curves independently by freely dragging the control points.
In the case of Tangent Dependent, you can change the shape of the leader curve by freely dragging the control points. You cannot drag the first control point on the follower and the movement of the second control point is limited in the direction of tangent defined by the end of leader curve. You can drag all the other control points on the follower curve freely.
In the case of Tangent Symmetric, you can change the shape of both the curves without affecting the tangency connection. The first and the second control points on the follower curve are locked to maintain the tangent connection. You cannot drag these points. You can drag all the other control points freely.
In the case of Curvature Dependent, you can change the shape of the leader curve by freely dragging the control points. The first three control points on the follower curve are locked to maintain the curvature connection. You cannot drag these points. You can drag all the other control points on the follower curve freely.