SubDDisplayToggle
                                        | Toolbar | Menu | Shortcut | 
|---|---|---|
| 
                                                             | View / Viewport Title SubD Display Toggle | Tab | 
The SubDDisplayToggle command switches the appearance of all SubD objects between smooth and flat modes.
                                             
                                        
Steps
- 
                                                    Press Tab. 
The Tab key does not toggle SubD display while you are picking a direction in commands because, at this point, the Tab key is used for locking a direction. To toggle SubD display while picking a direction, click  on the SubD Tools toolbar, or map the SubDDisplayToggle command to a key (e.g., F4) in Tools > Options > Keyboard and use it.
 on the SubD Tools toolbar, or map the SubDDisplayToggle command to a key (e.g., F4) in Tools > Options > Keyboard and use it.
The SubDDisplayToggle command:
- 
                                                    Is nestable (can be run while other commands are running). 
- 
                                                    Does not change object selection states.