Good afternoon,

I would like to kindly ask if there is a more detailed documentation on the new tolerance operands ISOA, ISOB, ISOC, ISOD.

The parameters requested by these operands are:

• Surface: I think this is self explanatory, it is the surface we are interested in
• Units: I don’t know if this is a factor or a selector for different units. It is lenses units if it is zero?
• Statistics: I suppose that this symbols indicate the statistics of the distribution of the zernike terms (eg. Kolmogorov or other)

I made some tests, but every time I used them, Zemax crashed. 

I would be very grateful if someone can help me with this topic