This geometrical operation allows to rotate in space your mesh or some of its elements.
To rotate your mesh:
From the Modification choose Transformation and from its sub-menu select the Rotation item. The following dialog box shall appear:
In this dialog box you can specify the elements which should be rotated and the rotation parameters:
Axis: point and vector
Angle of rotation
Create a copy radio button allows to copy the rotated object.
See Also a sample TUI Script of a Rotation operation.