It twists the previously selected vertices, lines, and faces from the ring as the starting point towards the other end.
|
|
|
|
|
| Drag an edge of the arrow or the center of the ring | Drag here after setting the axis like this | Twisted 60 degrees |
You can snap the dragged point to the nearest vertex by 
clicking the right button while you are dragging an edge of an arrow or a center of a ring.
 |
|
 |
| When you move an edge of an arrow or a center of the ring by dragging, | You can snap it to the nearest vertex by clicking the right button while moving |
You can twist by 15 degrees by 
dragging with Shift key.