Rotating the Imported Model
Make sure the 
Rotation mode is activated. When in rotation mode, the cursor has the shape of a 
rotating circle. Each zone has a specific mouse cursor:
yaw
roll and pitch
| Movement | Where | Action | |
| Yaw |  |
In the Frontal/Posterior or the Right/Left lateral viewer | Move the mouse left and right on the model. |
| Roll |  |
In the Frontal/Posterior viewer | Move the mouse outside the model. |
| Pitch |  |
In the Right/Left lateral viewer | Move the mouse outside the model. |