This option will calculate the normal vector to the maplet in various ways.

{{{
Main Menu: Q 0123O IUCRSG NVAMBX DEPL FZH? n
 >n                                                                               

 1. Normal from radius vector
 2. Normal from heights
 3. Normal from shape
 4. Normal from stereo
 q. Quit
}}}

'''1. Normal from radius vector''' - The normal is set to be the same as the radius vector. Keep in mind that the normal is the same as the radius vector everywhere if the object is a sphere. Rarely will conditions on an asteroid be such that this option will be correct.

'''2. Normal from heights''' - The normal is determined from the average of the heights in the maplet. This option is the one that will be used almost exclusively.

'''3. Normal from shape''' - The normal is determined from the shape model.

'''4. Normal from stereo''' - ???

== Most Common Usage ==
The vast majority of the time option "2" is used.

I.E.

n

2