This tool allows you to reverse the directions of objects. To execute it, with the tool active, click on the object whose direction should be reversed.
Recall that, to see the direction of a surface object, you need to turn on the Show Directions in the Display Options palette for Wire Frame or Shaded Work modes, or Show Normals in the Tool Options palette. Only the directions of boundary segments or segments of wire objects can be displayed. In the example shown, note that, after its directions have been reversed, the cuboid is inside-out.