| Toolbar | Menu | 
|---|---|
| 
                         
                              | 
                    
                         Curve Point Object > Mark Foci  | 
                
The MarkFoci command places point objects at focus points of elliptic, hyperbolic, and parabolic curves.
| Command-line option | |
|---|---|
| 
                         
 DrawAxis | 
                    
                         Adds a line that links the foci of ellipses and hyperbolas and connects the parabola focus to the vertex.  | 
                
Rhinoceros 6 © 2010-2020 Robert McNeel & Associates. 11-Nov-2020