QTR-Quadtone RIP

Can someone explain the differences in the Linearization Tab found in 
the current version of QTRgui, 2.5.0.9 vs, the one that is shown in the 
QTR User Guide?

The current version has 60 input fields while the one shown in the user 
guide displays 21 fields.

Can I surmise that ther is a 60 step digital step tablet that should be 
used instead of the 21 step digital step tablet?

Thanks,

Don Bryant