To Change the Tangent Options for Multiple Curves
1. In the Model Tree, right-click the Style feature that contains the curves to edit, and choose 
Edit Definition. The Style tab opens.
Edit Definition. The Style tab opens.2. Click > 
Curve Edit. The Curve Edit tab opens.
Curve Edit. The Curve Edit tab opens.3. To select curves to edit, hold down the CTRL key while you click two or more curves.
4. To display the original curve to compare the edited curve with, click 
Show Original.
Show Original.5. Hold down CTRL while you select the endpoints of the curves to activate their tangents.
6. Click the Tangent tab.
7. In the First or Second box, select a tangent type.
8. Under Properties, perform one of these actions:
◦ Select Relax Length.
◦ Select Fix Length, and then type a value in the Length, Angle, and Elevation boxes. Optionally, click 
to export the parameter value to edit outside of Style
to export the parameter value to edit outside of Style9. If the tangent type is Draft Tangent, type a value in the Draft box.
10. Click 
OK.
OK.