[from AutoCAD]In a 3D view, the 3D Rotate gizmo is displayed to aid in revolving 3D objects around a base point.With the 3D Rotate gizmo, you can drag to rotate selected objects and sub-objects freely or constrain the rotation to an axis.

Select objects

Specifies the objects that you want to rotate.

Base point

Sets the center point of the rotation.

Pick a rotation axis

On the 3D Scale gizmo, specifies the axis of rotation. Move the mouse until the axis path you want to select turns yellow, then click to select it.

Specify angle start point or type an angle

Sets the relative start point of the rotation. You can also enter an angle value.

Specify angle end point

Rotates the object about the specified axis. Click to end the rotation.