Freestyle > Performing Multilevel Subdivision > To Perform a Multilevel Subdivision
  
To Perform a Multilevel Subdivision
1. Create or import a shape.
2. From the Base Level list, select a level other than Base Level to subdivide the shape with the desired level of detail.
3. Click Freestyle > Show Changed to view all the changed vertices as a result of multilevel subdivision.
4. Click Freestyle > Reset Changed to reset the changes made to mesh elements at that subdivision level.
 
* Show Changed and Reset Changed are not available at Base Level.