The Rotate Structure option allows you to twist a structure in any direction. The center of rotation, indicated by a small circle with a cross in the middle , can be moved to any location.

To rotate a structure in the Structure Editor:

1. Select the structure/or part of structure you want to rotate.
   
2. Click the Rotate button , or select the Structure | Rotate item.
   
   
3. Move the center of rotation to the desired position by dragging the circle with a cross.
   
   
4. Drag any of the small rectangles on the structure edge to achieve the new angular position.