You can orient your model by selecting multiple surfaces to use as references in orientation. These references can be Front or Back (parallel to the screen), Top or Bottom (normal to the screen facing up or down), and Left or Right (normal to the screen and facing left or right). The model automatically reorients itself after the second surface has been selected.

If two different parallel surfaces are selected before a normal surface is selected, the second selection overrides the first. You can also orient your model by selecting a single horizontal or vertical axis for orientation.