Point Types
In Style you can create and edit curves in two modes:
• Interpolation points
By default, the interpolation points of a curve are displayed while you create or edit the curve. You can edit the curve by clicking and dragging the points that actually lie on the curve.
• Control points
Click the 
Control Points command on the Curve and Curve Edit tabs to display a curve's control points. You can edit the curve by clicking and dragging these points. Only the first and last control points on a curve can be soft points.
Control Points command on the Curve and Curve Edit tabs to display a curve's control points. You can edit the curve by clicking and dragging these points. Only the first and last control points on a curve can be soft points.