OOF2: The Manual
Orientation — Orientation of the crystalline axes.
Property defines how the
crystalline axes of a
Material are aligned with respect to
OOF2's lab (screen) coordinates. In the OOF2 coordinate
system, x is to the right,
y is up, and z points
out of the screen.
 Assuming a canonical orientation of the computer screen. If you're lying in bed with your laptop dangling from your knees, adjust the coordinates accordingly.