Use this procedure to create a profile. 
- Draw closed linework in the shape you need for the profile-based component. 
 
- Select the linework, right-click, and click Convert To 
Profile Definition.  
- To add another closed linework component to the profile, enter a (Add Ring), and select the desired linework. 
 
- Define the insertion point of the profile: 
- To create the insertion point at the object center, enter c (Centroid). 
 
- To create the insertion point at a different point of the object, specify an insertion point on screen. 
 
  
- Press Enter. 
 
- Enter a name for the profile, and click OK. 
You can now use the profile as a building block for profile-based object components.